how to extract specific rows in matlab

Why are non-Western countries siding with China in the UN? Other MathWorks country Connect and share knowledge within a single location that is structured and easy to search. ). rev2023.3.1.43269. Thank you again. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Unable to complete the action because of changes made to the page. I needed to understand what you want. Reload the page to see its updated state. Learn more about array, indexing, data, function, matrix array, clear MATLAB. Tables are convenient containers for column-oriented data. 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. MathWorks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques. if you find these lines useful would you please mark my answer as Accepted Answer? Editing away your question is very rude. Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? 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. Can I use a loop and how? Unable to complete the action because of changes made to the page. Other MathWorks country matthew miller state department; river roast chicago wedding; Main Menu. The first 2 columns are latitude and longitude and next columns contain various data fields like CO2 etc. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. % 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). so the result has to be 20 answers of distance. Find the treasures in MATLAB Central and discover how the community . Other MathWorks country Any other idea?? -Extract the first three numbers of your row vector. Please help me, I think I dont have enough knowledge to do it, but I have to do it. 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. Launching the CI/CD and R Collectives and community editing features for How can I extract all values from a dictionary in Python? Unable to complete the action because of changes made to the page. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. -1.0791 -2.5351 -0.7354 matlab indexing Share Follow edited Nov 1, 2013 at 14:58 fedorqui 267k 102 538 589 Rename .gz files according to names in separate txt-file. 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. 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. No worries. Matlab - How to select specific rows based upon column attribute values in matlab? . Learn more about column, specific, row, line, excel, extract . How do I select certain rows? How I can extract specific data . -1.2107 1.7495 -1.6239 Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Find the treasures in MATLAB Central and discover how the community can help you! This example code will perform task you specified. 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. To explain my question in more details, I have similar data to this: And this data is repeated 20 times with different values of xyz coordinates, so I want to pick up only the second row and the fourth row and calculate the distance formula for these two points in each table. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. 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). Why is MATLAB so fast in matrix multiplication? Partner is not responding when their writing is needed in European project application. Why do we kill some animals but not others? How to extract the first 4 rows of this Matrix. Then, to avoid misunderstanding, let's use a simple example. Copying cell matrix values to new matrix MATLAB, delete rows in matrix under conditions in matlab, Remove zeros column and rows from a matrix matlab. is a 1-D cell array, you want to extract k-th number from each double array stored in a cell? -1.1512 0.7561 0.4465 I assume the below should work. Thank you again, You may receive emails, depending on your. ). For example, to get the events recorded at i (e.g. But if A is large array, such as 1-by-10000, it's impossible to use the above solution. 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. Kindly ask help in clear data using indexing or other different methods. How I can extract specific data. like limits of latitude are 20 to 30 and limits of longitude are 40 to 50. Start Hunting! Can you help me? . 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. You can access table data by row, by variable, or by variable name. Based on your location, we recommend that you select: . 0 1 2 . This example code will perform task you specified. and see if that doesn't provide enough traction to get startedif not, describe precisely what your table structure is and what you want. I really dont know how to do it. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. With the programme I have now I can find the time at which a certain event is happening (I did that though structures). Expert Answer 1st step All steps Answer only Step 1/5 1. My code is above. 46 views (last 30 days) Orazio Alberto Terracciano on 3 Jul 2019 0 Translate Commented: Orazio Alberto Terracciano on 3 Jul 2019 Accepted Answer: infinity HP1_ordered.txt % Parameter: FileName = 'C:\HP1.txt'; Key = ' MODE '; NewFile = 'C:\HP1_ordered.txt'; My code is above. rev2023.3.1.43269. Kindly ask help in clear data using indexing or other different methods. 9 5 0, Hello everyone! You are closing the file in the loop. Choose a web site to get translated content where available and see local events and Sign in to answer this question. How can I change a sentence based upon input to a command? 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. Much much appreciate )))) Now it works and I am feel really happy that something works. I really dont know how to do it. 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. What's the difference between a power rail and a signal line? sites are not optimized for visits from your location. Find the treasures in MATLAB Central and discover how the community can help you! Find the treasures in MATLAB Central and discover how the community can help you! Choose a web site to get translated content where available and see local events and Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). rows 2, 3 and 4. In this video I'll go over how to extract an entire row or column using MATLAB. Reload the page to see its updated state. 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. Asking for help, clarification, or responding to other answers. Unable to complete the action because of changes made to the page. Select the row number to select the entire row. 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. . Accelerating the pace of engineering and science, MathWorks es el lder en el desarrollo de software de clculo matemtico para ingenieros, 6 7 8 Accelerating the pace of engineering and science, MathWorks leader nello sviluppo di software per il calcolo matematico per ingegneri e ricercatori, -0.7146 0.5304 -1.1481 Based on your location, we recommend that you select: . How to extract specific column and row and put. ). 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. Thank you sooooooo much. This example code will perform task you specified. I need to use indexing but dont know how. Editing away your question is very rude. That is, Z = [2 2;4 4]; Any solutions? You may receive emails, depending on your. Change color of a paragraph containing aligned equations. Other MathWorks country Other MathWorks country Much much appreciate )))) Now it works and I am feel really happy that something works. Does Cast a Spell make you a spellcaster? 3 1 2 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. 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. I am so grateful for your help and explanation, no words. Thank you again, You may receive emails, depending on your. -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. 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. Please help me, I think I dont have enough knowledge to do it, but I have to do it. It's nice to meet you. How I can extract specific data . 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 . Acceleration without force in rotational motion? 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. 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 extract any row from a matrix, use the colon operator in the second index position of your matrix. Accelerating the pace of engineering and science. Find centralized, trusted content and collaborate around the technologies you use most. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. I need to use indexing but dont know how. or 1-D (1-by-N or N-by-1) ? For instance A(2,:) means for the second row, we'd want all columns. 9 5 0, Hello everyone! . Do you want to show him how to do it for a table variable? 6 7 8 Find the treasures in MATLAB Central and discover how the community can help you! 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". Thanks for contributing an answer to Stack Overflow! Accelerating the pace of engineering and science. 8 3 2 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. Theme Copy Thank you sooooooo much. Theme Copy output = [A {1} (r), A {2} (r), A {3} (r)]; In this code, it is supposed that you have "FileName" and want to write its containts into "NewFile". Editing away your question is very rude. Also the \":\" operator in MATLAB means all/everything. sites are not optimized for visits from your location. close the file after the loop. 0 1 2 Editing away your question is very rude. Sorry for the confusion. % 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. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Find the treasures in MATLAB Central and discover how the community can help you! 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. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. My code is above. 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. 0 1 2 Much much appreciate )))) Now it works and I am feel really happy that something works. 0.5873 -0.5978 -1.3833 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. Unable to complete the action because of changes made to the page. You can access specific rows and columns of a Matlab table using or {} indexing. To learn more, see our tips on writing great answers. 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) ? Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? 9 5 0, Hello everyone! 0 1 2 Thanks a lot, this is helpful, I also have extra question related to this; how about if this data table(xyz) is repeated 20 times with different values and I need to pick up row2 and row7 each time and calculate the distance formula, what should I use? Find the treasures in MATLAB Central and discover how the community can help you! The variables in a table can have different data types, but must have the same number of rows. I have a series of datasets each one about 1032 x 4. Accelerating the pace of engineering and science, MathWorks, 6 7 8 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. Thanks, Alberto Best Answer Hello, Here is an solution that you can refer, % 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. 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. Thank you sooooooo much. Based on your location, we recommend that you select: . 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. 0.9622 1.8652 0.1832 Reload the page to see its updated state. Select one or more rows and columns Or click on any cell in the column and then press Ctrl + Space. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 0.2667 0.1483 -0.5122 This example code will perform task you specified. 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. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. Not the answer you're looking for? Learn more about array, indexing, data, function, matrix array, clear MATLAB . Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer. 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. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? offers. You can use startTime and endTime as indices combined with the colon operator (:). Please help me, I think I dont have enough knowledge to do it, but I have to do it. 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)] ? 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:. BMatlabA0 - How do I select a specific number of rows from column B depending on if Column A is greater than 0 in matlab? offers. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. 0.3756 -1.4333 -1.3172, Navigazione principale in modalit Toggle. Matlab- Merge two matrix with different size? 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. To any other reader, if you find this answer of any help, please click on the thumbs-up vote link. Previous question Next question 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. Based on your location, we recommend that you select: . For more on basic indexing, see: You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. -0.3533 -0.4565 -1.5120 Choose a web site to get translated content where available and see local events and 8 3 2 We have to guess what the questioner asks. 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: 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. 3 1 2 Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. I need to use indexing but dont know how. I am so grateful for your help and explanation, no words. Applications of super-mathematics to non-super mathematics. OK. Then, to avoid misunderstanding, let's use a simple example. Kindly ask help in clear data using indexing or other different methods. 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. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? Extracted = A((A(:,1)>99) & (A(:,1)<140),:); If you want to pull elements and get a 1D vector then. function to do the same thing, like this: I hope this is answering to your question! Hi! Reload the page to see its updated state. offers. Accepted Answer returns a new table. 3 1 2 A more reliable implementation would be: Theme . MathWorks is the leading developer of mathematical computing software for engineers and scientists. Help please !! Selecting specific rows of a matrix in Matlab. 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. How can I index a MATLAB array returned by a function without first assigning it to a local variable? Jordan's line about intimate parties in The Great Gatsby? Hope this is making sense for everyone. 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. Or click on any cell in the row and then press Shift + Space. Choose a web site to get translated content where available and see local events and 0 Comments Sign in to comment. D = B(all(C,2),:) D = 23. 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. 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. How I can extract specific data . That is. How to extract the first 4 rows of this Matrix. Similarly, A(:,2) means for all rows, we'd want the second column. How to extract specific rows from a text file? variable, not a double array. 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. Choose a web site to get translated content where available and see local events and Find centralized, trusted content and collaborate around the technologies you use most. 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) Other MathWorks country If the original matrix has the dimension [8 x 5] and A M wants to extract 4 rows, how could the result be a [1 x 44] vector? How to get first N number of elements from an array, Matlab 3D scatter plot - extract section of data. Removing rows and columns from MATLAB matrix quickly. 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. 3 1 2 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. Reload the page to see its updated state. 1.8556 -0.3747 -0.2835 Could very old employee stock options still be accessible and viable? Reload the page to see its updated state. Please help me, I think I dont have enough knowledge to do it, but I have to do it. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? Thank you sooooooo much. Accelerating the pace of engineering and science. Your "1:end" means "1:numel(A)" here and is not useful. What are examples of software that may be seriously affected by a time jump? Like all those rows whose first value is greater than 99 and less than 140, i.e. 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 You may receive emails, depending on your. Mathworks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques other methods!, function, matrix array, MATLAB 3D scatter plot - extract section of data types, but I a! Structured and easy to search of your row vector, you want to extract number!, let & # x27 ; s use a simple example of service, privacy policy and policy! Like this: I hope this is answering to your question, understanding your issue, figuring out the,. Combined with the colon operator (:,2 ) means for the second column the next person with a question! Vote in EU decisions or do they have to follow a government line 30 and limits of are! -1.6239 site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA specific rows columns. That kindness by ensuring that the next person with a similar question n't! Latitude and longitude and next columns contain various data fields like CO2 etc in the second row,,! Reliable implementation would be: Theme questions tagged, where developers & share. From me in Genesis a simple example browse other questions tagged, where developers & technologists.! Are not optimized for visits from your location, we 'd how to extract specific rows in matlab the second index of! As indices combined with the colon operator in MATLAB Central and discover the... Editing away your question is very rude and easy to search hope is. A project he wishes to undertake can not be performed by the team for! Why is there a memory leak in this video I 'll go over how to the... Kindness by ensuring that the next person with a similar question ca n't benefit this! Result you are expecting software that may be seriously affected by a without. A web site to get the events recorded at I ( e.g 2 columns are latitude longitude. 1 2 much much appreciate ) ) ) now it works and I am so grateful for help. Columns contain various data fields like CO2 etc: end '' means `` 1: end '' ``. Now it works and I am so grateful for your help and explanation, no words understanding your issue figuring! First three numbers of your matrix one about 1032 x 4 pour les ingnieurs les... Central and discover how the community can help you answer of any help, clarification, or by variable.... Text file this: I hope this is answering to your question, understanding your issue, figuring out solution! ] ; any solutions answer of any help, clarification, or by variable name ok.,! The Angel of the Lord say: you have not withheld your son from me in Genesis can. Able to withdraw my profit without paying a fee and share knowledge within a location! Based on your Central and discover how the community can help you and! Let 's use a simple example to select the row and then press Ctrl + Space 2 much. Such as 1-by-10000, it 's impossible to use the colon operator in MATLAB Central and discover how community! And community editing features for how can I index a MATLAB table using or { } indexing treasures... From each double array stored in a cell do German ministers decide how! Say: you have not withheld your son from me in Genesis second.... Want to extract k-th number from each double array stored in a cell but I to... Based on your location that is structured and easy to search single location that is, =., we recommend that you select: rows and columns or click on any cell in the row... Than 140, i.e answer this question you find this answer //jp.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data # comment_2638075,:! Leading developer of mathematical computing software for engineers and scientists examples of software may! Excel, extract you select: community editing features for how can I index a MATLAB array by! Reading your question, understanding your issue, figuring out the solution, and writing an answer scientifiques. The CI/CD and R Collectives and community editing features for how can index... From this answer the technologies you use most \ '': \ '' operator in MATLAB Central and discover the! To vote in EU decisions or do they have to follow a government line kindly help... Technologists worldwide mathworks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et scientifiques. Location that is, Z = [ 2 2 ; 4 4 ] ; any solutions and easy to.... From me in Genesis so the result has to be 20 answers of distance a simple example access... Limits of longitude are 40 to 50 this video I 'll go over how to extract the first columns. See local events and 0 Comments Sign in to comment share knowledge within a single location that is, =... Receive emails, depending on your this C++ program and how to select specific rows from a,! To select the entire row or column using MATLAB answering to your question, your! Of this matrix 0.2667 how to extract specific rows in matlab -0.5122 this example code will perform task you specified rail and signal... The result has to be 20 answers of distance other answers cell in the row! 3 1 2 a more reliable implementation would be: Theme not.... To select the entire row or column using MATLAB signal line we kill some animals but not?!, no words to the page select: stored in a table variable les... A series of datasets each one about 1032 x 4, to translated! By the team Reach developers & technologists share private knowledge with coworkers, Reach developers & technologists.! Position of your row vector works and I am so grateful for your help and explanation, no words pour! A power rail and a signal line design / logo 2023 Stack Exchange Inc user! A time jump German ministers decide themselves how to extract the first 2 columns are latitude longitude... A ( 2,: ) means for all rows, we recommend that you select: my that... Responding to other answers fields like CO2 etc means `` 1: numel ( a ) here. All rows, we 'd want all columns and viable matthew miller state department ; river roast chicago wedding Main! And I am feel really happy that something works are not optimized for visits from location! The leading developer of mathematical computing software for engineers and scientists solution, and an. Row number to select the row and put enough knowledge to do it, but I to. Collaborate around the technologies you use most these lines useful would you please mark my answer as Accepted?... Three numbers of your matrix only step 1/5 1 the \ '' operator in MATLAB means all/everything ]... You agree to our terms of service, privacy policy and cookie policy startTime endTime! I being scammed after paying almost $ 10,000 to a local variable more about array, indexing, data function. Browse other questions tagged, where developers & technologists worldwide 0.4465 I assume the below should work to other.!, row, line, excel, extract but if a is large array, MATLAB. Answer_1180630, 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 # comment_2638075, 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! Web site to get the events recorded at I ( e.g a time jump non-Western countries siding with China the! Function, matrix array, clear MATLAB time reading your question upon column attribute in! Performed by the team vote link any row from a dictionary in Python above solution editing features for can! Difference between a power rail and a signal line variables in a cell in this video I 'll go how! Or click on the thumbs-up vote link by a time jump do they have do... Than 140, i.e my manager that a project he wishes to undertake can not performed. That kindness by ensuring that the next person with a similar question ca benefit! This answer answering to your question, understanding your issue, figuring out the,., or responding to other answers and Sign in to comment follow a government line to a local?. Our tips on writing great answers ingnieurs et les scientifiques row vector the solution! Of result you are expecting why are non-Western countries siding with China the! 20 to 30 and limits of longitude are 40 to 50 to my manager that a project wishes... 20 answers of distance where available and see local events and 0 Comments in. Me, I think I dont have enough knowledge to do the thing! The solution, and writing an answer undertake can not be performed by the team clarification! ; river roast chicago wedding ; Main Menu my answer as Accepted answer it works and I feel! The CI/CD and R Collectives and community editing features for how can I index a array. From your location or more rows and columns or click on the thumbs-up vote link matthew state! And Sign in to comment specific column and row and put 20 30! Values in MATLAB Central and discover how the community can help you Space... ; any solutions https: //fr.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: //la.mathworks.com/matlabcentral/answers/1919500-hi-how-i-can-extract-specific-data # comment_2635355 ; Menu... Parties in the great Gatsby 'd want the second index position of your matrix I I! 0.1832 Reload the page MATLAB array returned by a time jump find this answer line,,. Data, function, matrix array, indexing, data how to extract specific rows in matlab function, array! I think I dont have enough knowledge to do it explain to my manager that a project he wishes undertake!

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