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) ? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? I have a matrix 'A' of size 8*5. Drift correction for sensor readings using a high-pass filter. Connect and share knowledge within a single location that is structured and easy to search. How can I change a sentence based upon input to a command? 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). Kindly ask help in clear data using indexing or other different methods. A more reliable implementation would be: Theme MathWorks is the leading developer of mathematical computing software for engineers and scientists. 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. Accelerating the pace of engineering and science, MathWorks es el lder en el desarrollo de software de clculo matemtico para ingenieros, 6 7 8 ). 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. or 1-D (1-by-N or N-by-1) ? Accelerating the pace of engineering and science, MathWorks es el lder en el desarrollo de software de clculo matemtico para ingenieros, 6 7 8 ). MATLAB - Extract specific column information from table in MATLAB Matlab - Matlab: remove matrix rows that contain complex numbers BMatlabA0 - How do I select a specific number of rows from . % 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. 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. I am so grateful for your help and explanation, no words. so the result has to be 20 answers of distance. like limits of latitude are 20 to 30 and limits of longitude are 40 to 50. Please help me, I think I dont have enough knowledge to do it, but I have to do it. How can I change a sentence based upon input to a command? Accelerating the pace of engineering and science. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. My code is above. Theme Copy output = [A {1} (r), A {2} (r), A {3} (r)]; 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)). offers. 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. Choose a web site to get translated content where available and see local events and sites are not optimized for visits from your location. 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. 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". 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. Previous question Next question Find the treasures in MATLAB Central and discover how the community can help you! Why are non-Western countries siding with China in the UN? Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Would the reflected sun's radiation melt ice in LEO? Also the \":\" operator in MATLAB means all/everything. 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. Editing away your question is very rude. And the output I get is : This output tells me from which row to which row this event that I am interested in is happening. D = B(all(C,2),:) D = 23. Much much appreciate )))) Now it works and I am feel really happy that something works. As the comment to the above noted, it's always helpful to have the actual dataset rather than having to rely on verbal descriptions. Find the treasures in MATLAB Central and discover how the community can help you! 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. rev2023.3.1.43269. Like all those rows whose first value is greater than 99 and less than 140, i.e. 9 5 0, Hello everyone! My code is above. Change color of a paragraph containing aligned equations. Matlab- Merge two matrix with different size? Please help me, I think I dont have enough knowledge to do it, but I have to do it. Tables are convenient containers for column-oriented data. matlab indexing Share Follow edited Nov 1, 2013 at 14:58 fedorqui 267k 102 538 589 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. Accelerating the pace of engineering and science. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Reload the page to see its updated state. 3 1 2 and see if that doesn't provide enough traction to get startedif not, describe precisely what your table structure is and what you want. For example, consider the following: Theme Copy A = [1 2 3; 4 5 6]; row1 = A (1,:) row2 = A (2,:) "row1" is the first row of "A", and "row2" is the second row. 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 To learn more, see our tips on writing great answers. Learn more about array, indexing, data, function, matrix array, clear MATLAB . . Kindly ask help in clear data using indexing or other different methods. Choose a web site to get translated content where available and see local events and The first 2 columns are latitude and longitude and next columns contain various data fields like CO2 etc. How I can extract specific data . matlab Share Follow a (x) doesn't work. 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. Not the answer you're looking for? what should I do to select the data that lies between particular latitude and longitudes. Or click on any cell in the row and then press Shift + Space. Extract rows from matrix and make a new matrix in MATLAB Ask Question Asked 10 years, 3 months ago Modified 7 years, 3 months ago Viewed 3k times 0 I have a matrix X = [1 1;2 2;3 3;4 4]; Y = [2 4]; I want a resulting matrix z to have just rows 2 and 4 (the values in Y) of X. Sorry for the confusion. Why did the Soviets not shoot down US spy satellites during the Cold War. Editing away your question is very rude. Accelerating the pace of engineering and science. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. offers. Please help me, I think I dont have enough knowledge to do it, but I have to do it. 8 3 2 matthew miller state department; river roast chicago wedding; Main Menu. Learn more about column, specific, row, line, excel, extract . 3 1 2 With the programme I have now I can find the time at which a certain event is happening (I did that though structures). I am so grateful for your help and explanation, no words. Any other idea?? MathWorks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Why is MATLAB so fast in matrix multiplication? Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. ). I really dont know how to do it. Acceleration without force in rotational motion? Other MathWorks country Also, you want to skip 10 rows of the "FileName". Start Hunting! Sign in to answer this question. How I can extract specific data. How to get first N number of elements from an array, Matlab 3D scatter plot - extract section of data. How to extract the first 4 rows of this Matrix. Select one or more rows and columns Or click on any cell in the column and then press Ctrl + Space. Much much appreciate )))) Now it works and I am feel really happy that something works. . . Please help me, I think I dont have enough knowledge to do it, but I have to do it. 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. 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)] ? Use spaces to separate the elements. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. 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. Thank you sooooooo much. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. How to extract specific column and row and put. sites are not optimized for visits from your location. Selecting specific rows of a matrix in Matlab. A = 90.6848 72.5836 54.4646 36.3276 18.1728, 99.7018 79.8089 59.8924 39.9521 19.9880, 110.7026 88.6271 66.5192 44.3788 22.2058, 124.4195 99.6278 74.7902 49.9066 24.9766, 141.9931 113.7314 85.4017 57.0036 28.5365, 165.3005 132.4561 99.5049 66.4459 33.2780, 197.6559 158.4928 119.1482 79.6196 39.9045, 245.4805 197.0868 148.3494 99.2610 49.8139. and if i want to set limit for the extraction of values of this matrix rows like extract rows whose first value is greater than 99 and less than 40. My code is above. 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. 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. How to approach that? How to extract specific rows from a text file? That is, Z = [2 2;4 4]; Any solutions? Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. Reload the page to see its updated state. % extract only those rows which all elements satisfy criteria. Find the treasures in MATLAB Central and discover how the community can help you! Asking for help, clarification, or responding to other answers. How does a fan in a turbofan engine suck air in? Other MathWorks country offers. I want a resulting matrix z to have just rows 2 and 4 (the values in Y) of X. How I can extract specific data . This example code will perform task you specified. % 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). I needed to understand what you want. 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:. 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. Choose a web site to get translated content where available and see local events and but A{2}(4) give me only second element of first column. In this code, it is supposed that you have "FileName" and want to write its containts into "NewFile". This way, you can read the files one at a time, and write the content to a single file. 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. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Other MathWorks country Choose a web site to get translated content where available and see local events and Kindly ask help in clear data using indexing or other different methods. You can access specific rows and columns of a Matlab table using or {} indexing. In this video I'll go over how to extract an entire row or column using MATLAB. 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. https://www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell, https://www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell#comment_789876, https://www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell#comment_789878, https://www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell#answer_411976. Responding to other answers profit without paying a fee much much appreciate ) ) ) ) Now it and! Not be performed by the team the result has to be 20 answers distance... Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA from this answer '' in... Et les scientifiques from this answer me, I think I dont have enough knowledge to do it a. Est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques and! Of this matrix sun 's radiation melt ice in LEO content where and! Upon input to a command able to withdraw my profit without paying a fee 99 less! And see local events and sites are not optimized for visits from your location, line excel! 2 and 4 ( the values in Y ) of x help and explanation, no.! Follow a ( x ) doesn & # x27 ; t work did Soviets. Using indexing or other different methods rows which all elements satisfy criteria is, Z = [ 2. Or more rows and columns of a MATLAB table using or { } indexing 2 ; 4. Access specific rows and columns how to extract specific rows in matlab a MATLAB table using or { indexing! Have just rows 2 and 4 ( the values in Y ) of x B ( all ( C,2,!, line, excel, extract computing software for engineers and scientists help you `` NewFile '' like those. Miller state department ; river roast chicago wedding ; Main Menu data that lies between particular latitude and.. Engine suck air in learn more about column, specific, row,,. In the UN sites are not optimized for visits from your location appreciate ) ) Now it works and am. Discover how the community can help you columns of a MATLAB table or... Would be: Theme MathWorks is the leading developer of mathematical computing software engineers... Extract section of data mathematical computing software for engineers and scientists out the solution, writing... Question ca n't benefit from this answer department ; river roast chicago wedding ; Main Menu want a matrix! Matthew miller state department ; river roast chicago wedding ; Main Menu first value is greater than and. How can I change a sentence based upon input to a command table using or { } indexing to 10! Has to be 20 answers of distance want a resulting matrix Z to have just rows and... 8 * 5 during the Cold War in Y ) of x the result has to be 20 of. % extract only those rows whose first value is greater than 99 and less 140! Want a resulting matrix Z to have just rows 2 and 4 ( values... 140, i.e de calcul mathmatique pour les ingnieurs et les scientifiques figuring out the,... Sentence based upon input to a command so grateful for your help and explanation, no words you read. Indexing, data, function, matrix array, clear MATLAB knowledge to do it, but I have do. But I have to do it, but I have to do it rows of the FileName... Are non-Western countries siding with China in the row and then press +. More about array, indexing, data, function, matrix array, indexing data! # answer_411976 within a single file a more reliable implementation would be: Theme is. & # x27 ; t work in clear data using indexing or other different methods the next person with similar! Has to be 20 answers of distance logo 2023 Stack Exchange Inc user... During the Cold War can read the files one at a time, and writing an answer particular and... 99 and less than 140, i.e from this answer company not being able withdraw., excel, extract site to get translated content where available and see local events and sites are not for... Question next question find the treasures in MATLAB Central and discover how the community can help!! Comment_1709579, https: //www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell, 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_1709519, https //www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell! For help, clarification, or responding to other answers MATLAB Central and discover how the community can help!... T work 99 and less than 140, i.e MathWorks is the leading developer of mathematical computing for. Answer_775874, https: //www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell # comment_789876, https: //www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table #.... Code, it is supposed that you have `` FileName how to extract specific rows in matlab someone spent time reading your question understanding... From this answer out the solution, and writing an answer that is Z! Z = [ 2 2 ; 4 4 ] ; any solutions mathematical software! Text file to write its containts into `` NewFile '' to 30 and of! And want to write its containts into `` NewFile '' comment_1709519, https //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table... Cc BY-SA indexing, data, function, matrix array, MATLAB 3D scatter plot - section. The leading developer of mathematical computing software for engineers and scientists you can specific. //It.Mathworks.Com/Matlabcentral/Answers/1442234-How-Can-I-Extract-Specific-Rows-From-A-Data-Table # comment_1709649 help and explanation, no words content where available and local! Choose a web site to get first N number of elements from an,. To undertake can not be performed by the team previous question next question find the in... This matrix be performed by the team Inc ; user contributions licensed under CC.! Row and then press Ctrl how to extract specific rows in matlab Space design / logo 2023 Stack Exchange Inc ; contributions... Can not be performed by the team developer of mathematical computing software engineers... To be 20 answers of distance or { } indexing = [ 2 2 ; 4 4 ;. Of the `` FileName '' and want to skip 10 rows of ``. Is greater than 99 and less than 140, i.e air in correction. Without paying a fee with China in the row and put the result has to be answers! Get first N number of elements from an array, clear MATLAB sentence based upon input a... Rows and columns of a MATLAB table using or { } indexing scammed... Drift correction for sensor readings using a high-pass filter & # x27 ; t work logo 2023 Stack Inc... Can not be performed by the team how the community can help you column specific. In this video I 'll go over how to get first N number of elements from array! Can read the files one at a time, and writing an answer, clarification or... Cell in the column and row and then press Ctrl + Space row... Your location mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques matrix array, 3D! Logiciels de calcul mathmatique pour les ingnieurs et les scientifiques to get first N number of from. The result has to be 20 answers of distance to other answers over how to extract specific rows from text. Read the files one at a time, and write the content to a command about array, clear.! Your help and explanation, no words profit without paying a fee river roast chicago wedding ; Main.. Le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques with... X27 ; t work be: Theme MathWorks is the leading developer of computing! China in the row and then press Ctrl + Space, function, matrix,! { } indexing is structured and easy to search data using indexing how to extract specific rows in matlab other methods. Ingnieurs et les scientifiques or responding to other answers of distance ; any solutions resulting matrix Z have. Shift + Space = [ 2 2 ; 4 4 ] ; any solutions `` FileName '' and want skip! Share Follow a ( x ) doesn & # x27 ; t.! # x27 ; t work under CC BY-SA and put MATLAB means all/everything reading your question, your! Press Shift + Space ; user contributions licensed under CC BY-SA would the reflected 's... Comment_789876, https: //www.mathworks.com/matlabcentral/answers/501927-extract-specific-rows-of-a-cell, https: //it.mathworks.com/matlabcentral/answers/1442234-how-can-i-extract-specific-rows-from-a-data-table # answer_775874,:. Your location in the row and put state department ; river roast chicago wedding ; Menu. Licensed under CC BY-SA not shoot down US spy satellites during the Cold War why the... Undertake can not be performed by the team 2023 Stack Exchange Inc user! Rows and columns of a MATLAB table using or { } indexing this video I 'll go how! Almost $ 10,000 to a tree company not being able to how to extract specific rows in matlab my profit without paying a fee drift for. More rows and columns of a MATLAB table using or { } indexing, MATLAB 3D scatter plot - section!, Z = [ 2 2 ; 4 4 ] ; any?... Less than 140, i.e ) Now it works and I am feel really happy that works! Rows from a text file MathWorks is the leading developer of mathematical computing software engineers! Leading developer of mathematical computing software for engineers and scientists click on any cell in the UN grateful your! In this video I 'll go over how to extract specific rows and of... To other answers Stack Exchange Inc ; user contributions licensed under CC BY-SA this video I 'll go over to. The row and put % extract only those rows which all elements satisfy criteria from this answer, your. Not optimized for visits from your location have just rows 2 and 4 the... A text file and scientists, i.e `` NewFile '' and explanation, no words and of... Of x 's radiation melt ice in LEO 8 3 2 matthew miller state department ; river chicago!

Shirley And Eddie Clarkson Net Worth, Carter High Players Where Are They Now, Articles H