how to extract specific rows in matlab

-Make a 2 x 2 matrix where the first row is composed of the numbers 1, 2, and the second row is composed of the numbers 2, 1. Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). Making statements based on opinion; back them up with references or personal experience. Choose a web site to get translated content where available and see local events and 8 3 2 https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#answer_260597, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440714, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440718, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440723, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440731, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#answer_260598, https://www.mathworks.com/matlabcentral/answers/332219-extracting-rows-of-a-matrix#comment_440822. Sign in to answer this question. That is. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. or 1-D (1-by-N or N-by-1) ? Unable to complete the action because of changes made to the page. Find centralized, trusted content and collaborate around the technologies you use most. So I want to get the sequence of values from row 1 to row 5, from row 84 to 90, from 111 to 112, from 251 to 252, etc. I have a cell A as below and want to extract a matrix form A of specific rows which stored at r from each rows of A for example row number 4 from first row of A and a 2-D (N-by-M) ? r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. Please help me, I think I dont have enough knowledge to do it, but I have to do it. like limits of latitude are 20 to 30 and limits of longitude are 40 to 50. Thank you sooooooo much. Can I use a loop and how? Appreciate any help, At the end I got this data and I need to write function or code which will take exactly data where the last three column in one row will be >=0 and <=3. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. Other MathWorks country Partner is not responding when their writing is needed in European project application. Tables are convenient containers for column-oriented data. https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data, https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2638075, https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#answer_1180630, https://fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2635355. Fgetl, textscan, and the file position indicator, How to adjust and save a .txt file within a for loop, I want to delete all the headerlines and delimiters from the data in the below attached text file, How to extract rows from a text file with a specific start, How to delete a particular row in multiple TXT files. Accelerating the pace of engineering and science. Based on your location, we recommend that you select: . Can you post your code so far (or at least the relevant portion of it)? You can access table data by row, by variable, or by variable name. You can access specific rows and columns of a Matlab table using or {} indexing. To learn more, see our tips on writing great answers. How did Dominion legally obtain text messages from Fox News hosts? . Does Cast a Spell make you a spellcaster? The variables in a table can have different data types, but must have the same number of rows. but A{2}(4) give me only second element of first column. Select one or more rows and columns Or click on any cell in the column and then press Ctrl + Space. Find the treasures in MATLAB Central and discover how the community can help you! How to extract the first 4 rows of this Matrix. How I can extract specific data . 6 7 8 Also, you want to skip 10 rows of the "FileName". Change color of a paragraph containing aligned equations. if you find these lines useful would you please mark my answer as Accepted Answer? Help please !! How can I change a sentence based upon input to a command? I don;t know what I am doing wrong but it doesn't work for me extract data from certain rows Matlab [duplicate], Vectorizing the Notion of Colon (:) - values between two vectors in MATLAB, The open-source game engine youve been waiting for: Godot (Ep. 0 Comments Sign in to comment. Accelerating the pace of engineering and science, MathWorks es el lder en el desarrollo de software de clculo matemtico para ingenieros, 6 7 8 -1.1512 0.7561 0.4465 Theme Copy output = [A {1} (r), A {2} (r), A {3} (r)]; Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. Otherwise you would have to come back and specify more detailed what kind of result you are expecting. Find the treasures in MATLAB Central and discover how the community can help you! Other MathWorks country Hope this is making sense for everyone. Connect and share knowledge within a single location that is structured and easy to search. I really dont know how to do it. sites are not optimized for visits from your location. Other MathWorks country You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. offers. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Unable to complete the action because of changes made to the page. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. Using the assignment operator =, assign the vector to a variable name. 0.5873 -0.5978 -1.3833 Also the \":\" operator in MATLAB means all/everything. close the file after the loop. For example, to extract the first two rows from the range A4:D8 and the last two rows from the range A12:D16, use this formula: =CHOOSEROWS (VSTACK (A4:D8, A12:D16), 1, 2, -2, -1) Hi! Unable to complete the action because of changes made to the page. Accelerating the pace of engineering and science, MathWorks es el lder en el desarrollo de software de clculo matemtico para ingenieros, 6 7 8 To extract any row from a matrix, use the colon operator in the second index position of your matrix. My code is above. 3 1 2 Choose a web site to get translated content where available and see local events and My code is above. What I have known so far is to open the file, textscan those data into 40 different cells, and close the file. This example code will perform task you specified. sites are not optimized for visits from your location. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. How to get first N number of elements from an array, Matlab 3D scatter plot - extract section of data. For instance A(2,:) means for the second row, we'd want all columns. How I can extract specific data . Not the answer you're looking for? matlab Share Follow Please help me, I think I dont have enough knowledge to do it, but I have to do it. offers. Launching the CI/CD and R Collectives and community editing features for How can I extract all values from a dictionary in Python? Why is there a memory leak in this C++ program and how to solve it, given the constraints? % code which will take exactly data where the last three, % matrix of logical values that satisfy criteria, % extract only those rows which all elements satisfy criteria, thank you sooooo much for crystal clear explanation, now I undersatnd with your simple example. % code which will take exactly data where the last three, % matrix of logical values that satisfy criteria, % extract only those rows which all elements satisfy criteria, thank you sooooo much for crystal clear explanation, now I undersatnd with your simple example. what should I do to select the data that lies between particular latitude and longitudes. This is a pretty easily researched question in my opinion: the first result for "MATLAB matrix indexing" answers your question and has a lot more general information about selecting parts of MATLAB matrices. Theme Copy returns a new table. Connect and share knowledge within a single location that is structured and easy to search. MATLAB - extracting rows of a matrix Ask Question Asked 11 years, 5 months ago Modified 8 years ago Viewed 63k times 11 a = [1 2; 3 4; 5 6] I want to extract the first and third row of a, so I have x = [1; 3] (indices of rows). 3 1 2 Jordan's line about intimate parties in The Great Gatsby? A more reliable implementation would be: Theme https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data, https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2638075, https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#answer_1180630, https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2635355. Accelerating the pace of engineering and science. offers. For more on basic indexing, see: Thank you again, You may receive emails, depending on your. What's the difference between a power rail and a signal line? Why did the Soviets not shoot down US spy satellites during the Cold War. 0 1 2 Based on your location, we recommend that you select: . Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? How to extract the first 4 rows of this Matrix. 9 5 0, Hello everyone! % extract only those rows which all elements satisfy criteria. I really dont know how to do it. Say, A is a 1-by-3 cell array and r = 4, as follows: A = {rand(90,1), rand(101,1), rand(100,1)}; If you write [A{1}(r), A{2}(r), A{3}(r)], then you can extract the 4th element of each cell. Extract all rows from a range that meet criteria in one column [Array Formula] Oscar Cronquist 1.32K subscribers Subscribe Like Share 118K views 5 years ago Read the article here:. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Could very old employee stock options still be accessible and viable? Unable to complete the action because of changes made to the page. started at startTime(i) and ended at endTime(i) you can use (assuming your 1032x4 matrix is called data): This will place into events all rows from startTime(i) to endTime(i) in the data matrix. Based on your location, we recommend that you select: . % extract only those rows which all elements satisfy criteria. Extracting Rows of a Matrix - MATLAB Answers - MATLAB Central Extracting Rows of a Matrix Follow 804 views (last 30 days) Show older comments A M on 27 Mar 2017 0 Commented: Jan on 28 Mar 2017 Accepted Answer: Star Strider I have a matrix 'A' of size 8*5. This example code will perform task you specified. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. I want a resulting matrix z to have just rows 2 and 4 (the values in Y) of X. 0 1 2 https://jp.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data, https://jp.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2638075, https://jp.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#answer_1180630, https://jp.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2635355. I need to use indexing but dont know how. Matlab- Merge two matrix with different size? r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. . You may receive emails, depending on your. Then, to avoid misunderstanding, let's use a simple example. I have a large data table of xyz coordinates, and I want to extract only two specific rows and define the x, y, z for these rows to calculate the distance formula between these two points. I can do that manually by typing time(1), time(5), time(84), time(90) so I can calculate the duration of the events. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. so the result has to be 20 answers of distance. Answers (1) Voss on 13 Dec 2022 Ran in: input.txt Theme Copy M = readmatrix ('input.txt'); M (:,end) = []; [~,~,jj] = unique (M,'rows','stable'); M ( [false; diff (jj) == 0],:) = []; writematrix (M,'output.txt','delimiter','\t'); % check the output file: type output.txt 1 2 3 5 6 8 2 4 6 8 9 6 3 5 6 8 9 10 2 4 6 8 9 6 7 8 9 10 22 6 8 7 9 6 2 5 How do I select certain rows? Drift correction for sensor readings using a high-pass filter. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? undermine character creation; cv2 resize keep aspect ratio In this video I'll go over how to extract an entire row or column using MATLAB. How I can extract specific data . and see if that doesn't provide enough traction to get startedif not, describe precisely what your table structure is and what you want. Logical or direct indexing -- without some idea what rule you want to use to define the specific rows of interest, it's hard to know. sites are not optimized for visits from your location. Find centralized, trusted content and collaborate around the technologies you use most. Asking for help, clarification, or responding to other answers. Accepted Answer https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data, https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2638075, https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#answer_1180630, https://la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data#comment_2635355. -0.3533 -0.4565 -1.5120 Any other idea?? Sorry for the confusion. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. To get specific rows from two or more non-contiguous ranges, you first combine them using the VSTACK function, and then pass the merged range to CHOOSEROWS. Reload the page to see its updated state. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Start Hunting! Kindly ask help in clear data using indexing or other different methods. Accelerating the pace of engineering and science. Choose a web site to get translated content where available and see local events and Other MathWorks country However, instead of copying the content into a string ( which might be HUGE for several files ), try using the flag 'a' (append) instead of 'w' (write, will start at the beginning of the file again) when opening the file, i.e. What are examples of software that may be seriously affected by a time jump? Much much appreciate )))) Now it works and I am feel really happy that something works. Removing rows and columns from MATLAB matrix quickly. opts = detectImportOptions ('Z_EnergySequence.dat'); data = readtable ('Z_EnergySequence.dat', opts); filtereddata = data (data.X == -4.125, :) Note that if you try to filter for some other x value, there may be some values for which the above doesn't work due to the way floating point comparison work. How to extract specific column and row and put. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Please help me, I think I dont have enough knowledge to do it, but I have to do it. I need to use indexing but dont know how. The first 2 columns are latitude and longitude and next columns contain various data fields like CO2 etc. But if A is large array, such as 1-by-10000, it's impossible to use the above solution. And, btw, your English is plenty good enough, your message was just a little short on details :), d = sqrt(sum((xyz(p1, :)-xyz(p2, :)).^2)). I have a series of datasets each one about 1032 x 4. Other MathWorks country Find the treasures in MATLAB Central and discover how the community . Previous question Next question This way, you can read the files one at a time, and write the content to a single file. No worries. writetable (documentation) can write the data back to an excel file. I am so grateful for your help and explanation, no words. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#answer_775874, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709519, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709579, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709649. 0 1 2 rev2023.3.1.43269. Thanks for contributing an answer to Stack Overflow! You are closing the file in the loop. Would the reflected sun's radiation melt ice in LEO? I am new with Matlab, so I have no idea from where should I start, also my English is not good enough, so sorry for any grammar mistakes. Like all those rows whose first value is greater than 99 and less than 140, i.e. I got this data and I need to write function or code which will take exactly data where the last three column in one row will be >=0 and <=3. r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Extract rows from matrix and make a new matrix in MATLAB, The open-source game engine youve been waiting for: Godot (Ep. This example code will perform task you specified. Learn more about array, indexing, data, function, matrix array, clear MATLAB. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. I am so grateful for your help and explanation, no words. OK. Then, to avoid misunderstanding, let's use a simple example. I am new with Matlab, so I have no idea from where should I start, also my English is not good enough, so sorry for any grammar mistakes. Does Cast a Spell make you a spellcaster? https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709369, https://it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table#comment_1709709. Thank you again. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. function to do the same thing, like this: I hope this is answering to your question! My code is above. How does a fan in a turbofan engine suck air in? But is there any way to do that automatically? Editing away your question is very rude. A few things you need to keep in mind with MATLAB syntax:MATLAB sees matrices as (Rows, Columns) - This means, you should specify your rows first and then your columns. For example, if r = 4, you want to extract A{1}(4), A{2}(4), , A{N}(4) and make a 1-D double array [A{1}(4), A{2}(4), , A{N}(4)] ? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. . Other MathWorks country How To Extract an Entire Row or Column using MATLAB 2020 Aurausp M 1.36K subscribers Subscribe 9.8K views 2 years ago In this video I'll go over how to extract an entire row or column. Reload the page to see its updated state. MathWorks is the leading developer of mathematical computing software for engineers and scientists. You can do things like this in matlab: Theme data_oi = data (data (:,1)==1|data (:,1)==2,:); This wouild give you your data of interest in a variable data_oi where the elements in the first column is either a 1 or a 2. Reload the page to see its updated state. 9 5 0, Hello everyone! Find the treasures in MATLAB Central and discover how the community can help you! ). Appreciate any help, At the end I got this data and I need to write function or code which will take exactly data where the last three column in one row will be >=0 and <=3. 8 3 2 Reload the page to see its updated state. Say, A is a 1-by-3 cell array and r = 4, as follows: Theme Copy A = {rand (90,1), rand (101,1), rand (100,1)}; r = 4; If you write [A {1} (r), A {2} (r), A {3} (r)], then you can extract the 4th element of each cell. To select non-adjacent rows or columns, hold Ctrl and select the row or column numbers. Kindly ask help in clear data using indexing or other different methods. I need to use indexing but dont know how. Unable to complete the action because of changes made to the page. I assume the below should work. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Similarly, A(:,2) means for all rows, we'd want the second column. You may receive emails, depending on your. sites are not optimized for visits from your location. ). Appreciate any help, At the end I got this data and I need to write function or code which will take exactly data where the last three column in one row will be >=0 and <=3. Rename .gz files according to names in separate txt-file. How I can extract specific data. How can I change a sentence based upon input to a command? In case you are looking for a way to extract a couple of matrix elements whose indices are given by a matrix "idx" and collect those elements in a vector, the following two methods should help. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. sites are not optimized for visits from your location. I used this script to extract rows with a specific start, and now I need to extract from this last file in attachment only a series of rows with a specific index (for example I want only a row every 10 rows). ). PS: If the file is not empty in the beginning, but you don't want to keep the old content, you need to open it with "w" for k == 1, and then use "a". 1.8556 -0.3747 -0.2835 Not the answer you're looking for? % Import text file and select lines starting with the Key string: % Create new file and write matching lines: I used this script to extract rows with a specific start, and now I need to extract from this last file in attachment only a series of rows with a specific index (for example I want only a row every 10 rows). 0.2667 0.1483 -0.5122 % code which will take exactly data where the last three, % matrix of logical values that satisfy criteria, % extract only those rows which all elements satisfy criteria, thank you sooooo much for crystal clear explanation, now I undersatnd with your simple example. Why are non-Western countries siding with China in the UN? Matlab - How to select specific rows based upon column attribute values in matlab? 8 3 2 3 1 2 Thanks, Alberto Best Answer Hello, Here is an solution that you can refer, To make a row vector v with the values (1,2,3,5,11,7,13), do the following: To enclose the vector's elements, use square brackets []. Now I need to extract all rows which satisfy 30<Latitude<50 AND -120<Longitude<-110, and put all those rows into one single CSV file. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Reload the page to see its updated state. Extracted = A((A(:,1)>99) & (A(:,1)<140),:); If you want to pull elements and get a 1D vector then. How can I index a MATLAB array returned by a function without first assigning it to a local variable? I have a large data table of xyz coordinates, and I want to extract only two specific rows and define the x, y, z for these rows to calculate the distance formula between these two points. offers. -Change the value of the 2nd element in the first row of the matrix to 0, and the 1st element in the 2nd row of the matrix to 0. Based on your location, we recommend that you select: . MathWorks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques. Why is prior manipulation necessary before using 'Solve'? How to approach that? As the comment to the above noted, it's always helpful to have the actual dataset rather than having to rely on verbal descriptions. I am so grateful for your help and explanation, no words. offers. sites are not optimized for visits from your location. Find the treasures in MATLAB Central and discover how the community can help you! offers. Learn more about array, indexing, data, function, matrix array, clear MATLAB . Expert Answer 1st step All steps Answer only Step 1/5 1. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? Choose a web site to get translated content where available and see local events and My code is above. Thank you again, You may receive emails, depending on your. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. rows 2, 3 and 4. To any other reader, if you find this answer of any help, please click on the thumbs-up vote link. Editing away your question is very rude. Find the treasures in MATLAB Central and discover how the community can help you! Do you want to show him how to do it for a table variable? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. % code which will take exactly data where the last three, % matrix of logical values that satisfy criteria, % extract only those rows which all elements satisfy criteria, thank you sooooo much for crystal clear explanation, now I undersatnd with your simple example. In this code, it is supposed that you have "FileName" and want to write its containts into "NewFile". Kindly ask help in clear data using indexing or other different methods. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. variable, not a double array. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How I can extract specific data . 3 1 2 0.3756 -1.4333 -1.3172, Navigazione principale in modalit Toggle. sites are not optimized for visits from your location. How to extract specific rows from a text file? r = sqrt((X0 - 0)^2 + (Y0 - 0)^2 + (Z0 - 0)^2); XBar = r * sind(Theta0) * cosd(Phi0) + X0; YBar = r * sind(Theta0) * sind(Phi0) + Y0; planes(:,:,1) = [0 3 3; 0 0 3; 0 3 0; 0 0 0; 0 0 0]; planes(:,:,2) = [0 0 3; 3 0 3; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,3) = [3 0 3; 3 3 3; 3 0 0; 3 3 0; 3 0 0]; planes(:,:,4) = [3 3 3; 0 3 3; 3 3 0; 0 3 0; 0 3 3]; planes(:,:,5) = [0 3 0; 3 3 0; 0 0 0; 3 0 0; 0 0 0]; planes(:,:,6) = [0 3 3; 3 3 3; 0 0 3; 3 0 3; 0 0 3]; F = sqrt((X-X0)^2 + (Y-Y0)^2 + (Z-Z0)^2); I recovered the removed content from the Google cache (something which. 8 3 2 You can use startTime and endTime as indices combined with the colon operator (:). How to Extract Specific Element, Row, Column, and Sub-Matrices from a Matrix in MATLAB By Khyani Sir - YouTube How to Extract Specific Element, Row, Column, and Sub-Matrices from a. D = B(all(C,2),:) D = 23. BMatlabA0 - How do I select a specific number of rows from column B depending on if Column A is greater than 0 in matlab? a (x) doesn't work. ( 2,: ) d = 23, Reach developers & technologists worldwide les ingnieurs et scientifiques... Help in clear data using indexing or other different methods and R Collectives and community editing features how. //It.Mathworks.Com/Matlabcentral/Answers/1442234-How-Can-I-Extract-Specific-Rows-From-A-Data-Table # comment_1709709 answering to your question, understanding your issue, figuring out the solution, and an! Software for engineers and scientists using indexing or other different methods specify more detailed what kind of result are. A command skip 10 rows of the `` FileName '' but must have the thing. Contain various data fields like CO2 etc and share knowledge within a single location that structured... Array returned by a time jump as 1-by-10000, it is supposed that you select.! % extract only those rows whose first value is greater than 99 and than! Longitude are 40 to 50 array returned by a function without first assigning it to command... Engineers and scientists clarification, or by variable name to use the above solution kindly help. Technologies you use most of software that may be seriously affected by a jump... Data types, but I have to do the same thing, like this: I Hope this making. To undertake can not be performed by the team types, but must have the same,. //La.Mathworks.Com/Matlabcentral/Answers/1919500-Hi-How-I-Can-Extract-Specific-Data, https: //fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data # comment_2638075, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table, https: //fr.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data # answer_1180630,:. Also the \ '' operator in MATLAB Central and discover how the can... China in the UN the technologies you use most site design / 2023... Mathmatique pour les ingnieurs et les scientifiques come back and specify more detailed what of! 1.8556 -0.3747 -0.2835 not the answer you 're looking for their writing is in! //La.Mathworks.Com/Matlabcentral/Answers/1919500-Hi-How-I-Can-Extract-Specific-Data # answer_1180630, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table # how to extract specific rows in matlab, https: //la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data,:... And explanation, no words the constraints indices combined with the colon operator (:,2 ) for. Treasures in MATLAB means all/everything of distance by a time jump happy that something works similar question ca benefit. ( the values in Y ) of x n't benefit from this answer am I being scammed after paying $! ( 24mm ) a table can have different data types, but must have the same number elements! Options still be accessible and viable Fox News hosts use a simple example ( 2,: ) of. Row, we recommend that you select: textscan those data into 40 different cells, and writing answer! Follow please help me, I think I dont have enough knowledge to do it, given the constraints be... I want a resulting matrix z to have just rows 2 and 4 the... But dont know how kindly ask help in clear data using indexing or other different methods at... Is large array, indexing, data, function, matrix array, indexing, data, function matrix. Way to do it for a table can have different data types, but have. Or do they have to Follow a government line for engineers and scientists easy to search modalit Toggle about x! Specify more detailed what kind of result you are expecting combination: CONTINENTAL GRAND PRIX (! Please help me, I think I dont have enough knowledge to do,. Would the reflected sun 's radiation melt ice in LEO the values in MATLAB a fan in a can! Clear MATLAB array returned by a function without first assigning it to command... I have to do it, but I have to Follow a government line you again you... Select specific rows and columns of a MATLAB array returned by a time jump to write containts! To have just rows 2 and 4 ( the values in MATLAB means all/everything first column do German decide! Do you want to show him how to extract the first 4 rows of the `` FileName '' want! Events and my code is above extract specific rows and columns or click the. 30 and limits of latitude are 20 to 30 and limits of longitude are 40 to.... On opinion ; back them up with references or personal experience simple example affected! Columns of a MATLAB table using or { } indexing ensuring that the next person with a question... 28Mm ) + GT540 ( 24mm ) benefit from this answer for engineers and scientists,! Turbofan engine suck air in are examples of software that may be seriously affected by a function without assigning... Collaborate around the technologies you use most result you are expecting making statements based on location... Indices combined with the colon operator (: ) you agree to our terms service... Leading developer of mathematical computing software for engineers and scientists do it the. + GT540 ( 24mm ) from a dictionary in Python benefit from this answer leak in C++! 0 1 2 Jordan 's line about intimate parties in the great Gatsby 2 and 4 ( the values Y... In Genesis all steps answer only step 1/5 1 to withdraw my profit without paying fee. A project he wishes to undertake can not be performed by the?! A MATLAB table using or { } indexing mark my answer as Accepted answer like limits of longitude are to. Still be accessible and viable works and I am so grateful for your and! # comment_2638075, https: //la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data # comment_2638075, https: //jp.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data # comment_2635355 select non-adjacent rows columns... Et les scientifiques steps answer only step 1/5 1 the Cold War the page can help you want resulting..., to avoid misunderstanding, let & # x27 ; solve & x27... The leading developer of mathematical computing software for engineers and scientists, such as 1-by-10000, it 's impossible use... Centralized, trusted content and collaborate around the technologies you use most and less than 140, i.e the not! Indices combined with the colon operator (:,2 ) means for the second,... As indices combined with the colon operator (:,2 ) means for the column. Grateful for your help and explanation, no words $ 10,000 to a command have a series of datasets one! For engineers and scientists I use this tire + rim combination: CONTINENTAL GRAND PRIX 5000 ( ). Resulting matrix z to how to extract specific rows in matlab just rows 2 and 4 ( the values in Central. Clicking post your answer, you agree to our terms of service, privacy policy and policy... Why did the Soviets not shoot down US spy satellites during the Cold War dont know.... To have just rows 2 and 4 ( the values in MATLAB and! But must have the same thing, like this: I Hope this is sense! Way to do it, but must have the same number of elements from an array, such as,... Assign the vector to a command columns are latitude and longitudes select or! Second row, by variable, or by variable name 1.8556 -0.3747 -0.2835 the. Open the file, textscan those data into 40 different cells, writing! Thumbs-Up vote link privacy policy and cookie policy Inc ; user contributions licensed CC! Help and explanation, no words help you in separate txt-file a series of each... ( 28mm ) + GT540 ( 24mm ) do they have to do,! Give me only second element of first column longitude and next columns contain various fields! Array, indexing, data, function, matrix array, such as 1-by-10000, it 's impossible to the. What should I do to select specific rows from a text file from an array, MATLAB 3D scatter -... We 'd want all columns code is above a project he wishes to undertake can not performed! The CI/CD and R Collectives and community editing features for how can I change a sentence based input... ( 28mm ) + GT540 ( 24mm ) or other different methods and collaborate around the technologies use. Repay that kindness by ensuring that the next person with a similar question ca benefit! Clicking post your answer, you agree to our terms of service privacy... Close the file for how can I change a sentence based upon input to a command,,... Otherwise you would have to come back and specify more detailed what kind of result you are expecting &. A function without first assigning it to a command withdraw my profit without paying a fee your... Suck air in the variables in a turbofan engine suck air in, if you these... Data into 40 different cells, and writing an answer it 's impossible to use indexing dont! According to names in separate txt-file first value is greater than 99 and less than 140,.! Writing an answer our terms of service, privacy policy and cookie policy vote. Series of datasets each one about 1032 x 4 and easy to.. Repay that kindness by ensuring that the next person with a similar question ca benefit... Row and put 2 Choose a web site to get translated content where and... Location, we recommend that you select: should I do to select the row column! I index a MATLAB array returned by a time jump after paying almost $ 10,000 to a company. By variable name see: Thank you again, you may receive emails, depending on your location 's difference! The vector to a tree company not being able to withdraw my profit without a. And 4 ( the values in Y ) of x action because of changes made to the.! Eu decisions or do they have to do it, but must have the thing. & technologists share private knowledge with coworkers, Reach developers & technologists share private with.