Taste tasty parfait, tiramisu and gteau.. It's easy to find this spot due to its great location. Using the code mentioned below, I calculated the times for constructing the same tiled vector from a base vector A= [1:N]. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. var result = ""; var N = 4; for (let i=0; i. I see lots of assertions about program performance here on SO, very few backed up by evidence. I conducted a small Matlab test to check the speed differential between repmat and tony's trick. Follow 631 views (last 30 days) Show older comments Justin Solomon on 28 Aug 2012 Vote 1 Link Commented: Walter Roberson on 13 Sep 2021 Accepted Answer: Azzi Abdelmalek Say I have a column vector x= [a;b;c]. Using the kronecker is a known idiom for duplicating data. I conducted a small Matlab test to check the speed differential between repmat and tony's trick. How can I find how many times each element in this vector is repeated without using a loop. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, How to efficiently construct a matrix in matlab that depends on indices, Assign an entire row to multiple rows of another matrix in matlab. How many transistors at minimum do you need to build a general-purpose computer? For example, if A is Repetition factors for each dimension (as separate arguments). I want to repeat each element n times to make a long length(x)*n vector. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? of v are repeated n times. This is more efficient than KRON. Do you want to open this example with your edits? a 2-by-3 block of each element the corresponding dimension. Accelerating the pace of engineering and science. Examples collapse all Assign Matrix Values Copy Command Create a Hilbert matrix of order 10. s = 10; H = zeros (s); for c = 1:s for r = 1:s H (r,c) = 1/ (r+c-1); end end Decrement Values Step by increments of -0.2, and display the values. Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 The This function fully supports distributed arrays. The input valArray can be of any MATLAB data type, including a character vector, cell array, or struct. Create a matrix and copy its columns into a new array, repeating the first column twice and second column three times. QGIS expression not working in categorized symbology. If v is a column vector, u is Other MathWorks country Using the code mentioned below, I calculated the times for constructing the same tiled vector from a base vector A=[1:N]. either be a scalar or a vector with the same length as A in Have you tried repmat, say. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. To repeat a given string N times in JavaScript, use a looping statement like For loop or While Loop to iterate for N times , and concatenate the resulting string with the given string for N times . Run MATLAB Functions in Thread-Based Environment, Run MATLAB Functions with Distributed Arrays. Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | char | string | struct | table | cell | datetime | duration. Repeat element of a vector n times without loop. be 1. Other MathWorks country Is there any MATLAB command for this? The sample code to repeat a given string str for N times using For Loop and store the output in result is. the number of times to repeat the corresponding element of v. This syntax is not supported for table input. I have a vector t_vec. Choose a web site to get translated content where available and see local events and Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | char | struct | table | cell | datetime | duration I know, these times might be different for different machines, but the relative difference in order-of-magnitude of times will stand. Depending on your end usage, you may want to consider using a cell array of strings instead: Output = repmat ( {A},X,1); Share Improve this answer Follow edited Mar 7, 2014 at 19:02 Doresoom 7,368 14 46 61 answered Mar 7, 2014 at 18:57 DaveH For example, repelem(TA,1,n,p,). You have a modified version of this example. For more B = repelem(A,r1,,rN) returns In either case, n must be integer-valued. A % Matlab's command line is a little like a standard shell: % - Use the up arrow to recall commands without retyping them (and % down arrow to go forward in the command history). You will be served French cuisine at Le Patati.Have good goat salads, hamburgers and salmon tartare at this place when you happen to be near it. Try montage(). It uses the same parameters, except for the first parameter which must be a vector and not a matrix. offers. I want to create another vector that is the repetition of t_vec n types, so that is shows somehting like this: [ion, ion, off, off, off, ion+randn, ion+randn, ioff, ioff, ioff,. If you want to repeat n times vec=1:5 n=10; out=repmat (vec,n,1); out=out (:)'; Jan on 25 Nov 2012 0 Link While I'd prefer Matt Fig's approach in real programs, here another approach, which might be interesting: vec = 1:5; n = 2; index = zeros (1, length (vec) * n); index (1:n:end) = 1; index = cumsum (index); result = vec (index); The results show that YES, Tony's-Trick is FASTER BY AN ORDER of MAGNITUDE, especially for larger N. People are welcome to try it themselves. Accelerating the pace of engineering and science. information, see Run MATLAB Functions with Distributed Arrays (Parallel Computing Toolbox). We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Solar noon: 12:49PM. Input array, specified as a matrix or multidimensional array. a vector, then each element of n specifies the rev2022.12.9.43105. or a vector. Say I have a column vector x=[a;b;c]. How to use Randperm function in MATLAB ,randperm(n) returns a row vector containing a random permutation of the integers from 1 to n without . In the United States, must state courts follow rulings by federal courts of appeals? In addition, I have two 500x1 arrays of integers, the first contains numbers referring to the starting row, the second contains numbers referring to the end row. You must create a License File, named license. I would like to duplicate it within itself n times, i.e. Use the repmat function: A = ['12 N']; X = 5 Output = repmat (A, X, 1); will result in a character array. Based on You may receive emails, depending on your. N=10, time_repmat = 8e-5 , time_tony = 3e-5, N=100, time_repmat = 2.9e-4 , time_tony = 6e-5, N=1000, time_repmat = 0.0302 , time_tony = 0.0058, N=10000, time_repmat = 2.9199 , time_tony = 0.5292. n Number of times to repeat input array in row and column dimensions integer value Number of times to repeat the input array in the row and column dimensions, specified as an integer value. MATLAB Language Fundamentals Matrices and Arrays repmat On this page Syntax Description Examples Initialize Matrix with Same Element Value Square Block Format Rectangular Block Format 3-D Block Array Vertical Stack of Row Vectors Horizontal Stack of Column Vectors Tabular Block Format Input Arguments A n r1,.,rN r Tips Extended Capabilities Accepted Answer: Azzi Abdelmalek Say I have a column vector x= [a;b;c]. n Number of times to repeat each elementscalar| vector Number of times to repeat each element, specified as a scalar or a vector. a table, each repetition factor must be a scalar. be a multidimensional array. MATLAB model for equalizer using LMS algorithm adaptive filter and unexpected output curve 0 The MATLAB code below is for equalizer . MATLAB represents a text string as an row vector of characters (char data type), where each character is stored in 2 bytes of memory. Connect and share knowledge within a single location that is structured and easy to search. My machine/os details are given below : Relevant Machine/OS/Matlab Details : Athlon i686 Arch, Ubuntu 11.04 32 bit, 3gb ram, Matlab 2011b. U can use repmat it not exactly elegant but it will do the job, newx = [repmat(x(1),n,1);repmat(x(2),n,1);repmat(x(3),n,1)]. If v is a row vector or scalar, u is One way to do this would be to use the recent repelem function that was released in version R2015b where you can repeat each element in a vector a certain amount of times. sites are not optimized for visits from your location. I want to repeat each element n times to make a long length (x)*n vector. more information, see Run MATLAB Functions in Thread-Based Environment. I have a vector t_vec. Repmat and Reshape are usually found to be slower than Tony's trick as it directly uses Matlabs inherent indexing. a row vector. This function fully supports GPU arrays. I want to create another vector that is the repetition of t_vec n types, so that is shows somehting like this: [ion, ion, off, off, off, ion+randn, ion+randn, ioff, ioff, ioff,], with a different value for randn each time, You may receive emails, depending on your. number of times to repeat the corresponding element of v. 4, is represented by one block, i. This is a Faster Method Than repmat or reshape by an Order of Magnitude. Find the treasures in MATLAB Central and discover how the community can help you! Each r1,,rN must Consider a vector in MATLAB, where some elements are repeated. y = repmat(x,1,3); y = transpose(y); y = y(:); Ah, but how do you construct the ind vector for general length n repetitions ? The input must be a vector or matrix. repeat n times vector with name index Follow 12 views (last 30 days) Show older comments charles aouad alrededor de 6 horas ago 0 Link Translate Commented: Stephen23 alrededor de 2 horas ago i hope someone can help me i need to repeat these 4 lines of code n times with the variable {i} changing from 1 until n E {i}=trapz (days,D {i}); your location, we recommend that you select: . The input cannot be a Number of times to repeat each element, specified as a scalar MATLAB: duplicating vector 'n' times [duplicate]. Reload the page to see its updated state. At what point in the prequels is it revealed that Palpatine is Darth Sidious? - MATLAB Answers - MATLAB Central MATLAB Central Home Ask Answer Browse More Trial software Repeat element of a vector n times without loop. For example: words = {'SO','TODAY', 'IS', 'THURSDAY',.} To build block arrays by forming the tensor product of the input with an array of ones, use kron.For example, to stack the row vector A = 1:3 four times vertically, you can use B = kron(A,ones(4,1)).. To create block arrays and perform a binary operation in a single pass, use bsxfun.In some cases, bsxfun provides a simpler and more memory efficient solution. Unable to complete the action because of changes made to the page. The basic structure of a for-loop is. be the same length as v. Each element of n specifies I want to create another vector that is the repetition of t_vec n types, so that is shows somehting like this: [ion, ion, off, off, off, ion+randn, ion+randn, ioff, ioff, ioff,], with a different value for randn each time, You may receive emails, depending on your. This function fully supports thread-based environments. Complex Number Support: Yes. MATLAB - Remove Leading and Trailing Zeros From a Vector, MATLAB: Identify if a value is repeated sequentially N times in a vector, TypeError: unsupported operand type(s) for *: 'IntVar' and 'float', Examples of frauds discovered because someone tried to mimic a random sequence. If n is 0 or negative, the result is an empty array. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. If nis a vector, then each element of nspecifies the In either case, nmust be integer-valued. Unable to complete the action because of changes made to the page. Based on In either case, n must be integer-valued. Choose a web site to get translated content where available and see local events and What's the \synctex primitive? The elements in an array can be accessed by an index number and it starts from 0. Sunset: 05:25PM. Repetition factors for each dimension, specified as separate an array with each element of A repeated according This function supports tall arrays with the limitations: The replication factor in the first dimension must your location, we recommend that you select: . I can't see myself using Tony's Trick regularly but then I don't use repmat much, and now I know where to look if I ever find repmat too slow. I want to repeat this vector multiple times. Other MathWorks country sites are not optimized for visits from your location. Excellent answer: a statement about program performance backed up by evidence. In MATLAB the array indexing starts from 1. However, because there is a derivative of the input involved, I'm not sure how to handle it in ode45. Test if a vector contains a given element. 01:2; >> trapz(t,exp(-j*2*pi*f*t)) ans = 4. How is the merkle root verified if the mempools may be different? Repeat element of a vector n times without loop. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If n is a vector, then each element of n specifies the number of times to repeat the corresponding element of v.In either case, n must be integer-valued. Did the apostolic or early church fathers acknowledge Papal infallibility? A bouncing ball model is a classic example of a hybrid dynamic system Yes I have simulated missile trajectories in matlab and I currently work on optimal and robust methods applied to aerospace structures Automatica, 77:112-119, March 2017 Taking Variables from MATLAB Where To Download Matlab Code For Trajectory . Related Question. For Day length: 9h 11m. if n = 3, it would end up as: How can I achieve this for any value of n? For example, for n=3, the answer would be: Theme ans= a a a b b b c c c Can anyone think of an elegant way to do this without looping? When you found something to even improve it, please tell me. Follow 595 views (last 30 days) Show older comments Justin Solomon on 28 Aug 2012 Vote 1 Link Commented: Walter Roberson on 13 Sep 2021 When the index to a vector is a boolean vector of the same length as the vector, then MATLAB can use that boolean result to index it. The gradient of f is defined as the unique vector field whose dot product with any vector v at each point x is the directional derivative of f along v. Unable to complete the action because of changes made to the page. Sunrise, sunset, day length and solar time for Tarbes. Create a vector and repeat each of its elements three times into a new vector. Have a look at what the size of your vector is and compare the methods. offers. If n is a scalar, then all elements of v are repeated n times. I want to repeat each element n times to make a long length(x)*n vector. Output vector. CGAC2022 Day 10: Help Santa sort presents! How does the Chameleon's Arcane/Divine focus interact with magic item crafting? Any more efficient methods? Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 Partition large arrays across the combined memory of your cluster using Parallel Computing Toolbox. This method has significant time savings against reshape or repmat for large N's. of A. length of u is length(v)*n. If n is a vector, then it must Based on your location, we recommend that you select: . Accelerating the pace of engineering and science, MathWorks es el lder en el desarrollo de software de clculo matemtico para ingenieros, I have a vector t_vec. Thanks, Justin Accepted Answer Azzi Abdelmalek on 28 Aug 2012 15 Link if you wanted to use the * operator to duplicate elements -- forcing you to call upon repmat() to duplicate elements. Accelerating the pace of engineering and science. Find centralized, trusted content and collaborate around the technologies you use most. I know I could do the following: This seems a little cumbersome though. Reload the page to see its updated state. How can I use a VPN to access a Russian website that is banned in the EU? Complex Number Support: Yes. If nis a scalar, then all elements of vare repeated ntimes. Choose a web site to get translated content where available and see local events and offers. How should I implement this sum with for loops in matlab, for i = 1:20 , N = 20 and is a vector, I have to avoid [0] so should I write a for loop, for each R? matlab Share Cite Follow edited Feb 21, 2016 at 14:25 gebruiker 6,072 5 25 73 asked Feb 21, 2016 at 12:46 Rosa Maison Natale Ferdinand Foch is a must to visit before tasty meals at this restaurant. differential equations input derivative MATLAB ode45 I have a simple equation I'd like to solve: Fdot = udot - b0* (F - u), where u is a time varying input, F is the variable I'm solving for, and b0 is a scalar constant. of v is repeated n times. If n is Generate C and C++ code using MATLAB Coder. The input must be a vector or matrix. You clicked a link that corresponds to this MATLAB command: Run the command by entering it in the MATLAB Command Window. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Can we see some numbers, cross-platform/OS/vector size/etc.? offers. MathWorks is the leading developer of mathematical computing software for engineers and scientists. It can be used for non-vectors too. Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64. The input cannot for i=1:1:20 R (i) =symsum(e(k)-e(k-i),k+i,0,N); end where v is a scalar or vector, returns a vector Why is apparent power not measured in watts? Create a matrix and repeat each element into a 3-by-2 block of a new matrix. There is several others ways of doing it which in some cases are more efficient. n = 2; t_vec = [ion ion ioff ioff ioff]; repmat(t_vec,1,n) HTH. Calculate with arrays that have more rows than fit in memory. Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? Secondly, one wonders why. Well, I admit that even reading this message will waste more time then millions of matrix transpositions will cost why you did not use outer product and you chosen kronecker ( just curious ) because the guy's question was having vectors ? https://la.mathworks.com/matlabcentral/answers/362996-repeat-vector-n-times, https://la.mathworks.com/matlabcentral/answers/362996-repeat-vector-n-times#answer_287503. Feel free to test the function with all your data and give me feedback. Input element, specified as a scalar or a vector. Accelerate code by running on a graphics processing unit (GPU) using Parallel Computing Toolbox. Where is it documented? Other MathWorks country I want to create another vector that is the repetition of t_vec n types, so that is shows somehting like this: [ion, ion, off, off, off, ion+randn, ion+randn, ioff, ioff, ioff,. This restaurant has delicious port wine among its drinks. If A is Number of times to repeat each element, specified as a scalar or a vector. If n is a scalar, then all elements of v are repeated n times. I am sure, the time difference between the two methods will be even more significant for N=100000. The strcmp function takes two input arguments (two strings) and returns either true or false, just like any boolean expression. I want to repeat each element n times to make a long length (x)*n vector. Small improvement: transposition of the matrix. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Say I have a column vector x=[a;b;c]. Matlab rank values in vector with elements repeated multiple times Matlab vector times cell array Duplicating a 2d matrix in matlab along a 3rd axis MANY times for loop in matlab storing values (scalar times vector array) score:4 Based on Abhinav's answer and some tests, I wrote a function which is ALWAYS faster than repmat ()! ], with a different value for randn each time Theme Copy ton=2; toff=3; ion=0.7; ioff=-6; t_vec1 (1:ton)=ion+randn; t_vec1 (ton+1:ton+toff)=ioff; 393 views (last 30 days) Show older comments Justin Solomon on 28 Aug 2012 1 Link Translate Commented: Walter Roberson on 13 Sep 2021 Accepted Answer: Azzi Abdelmalek Say I have a column vector x= [a;b;c]. creating a vector that repeats a number 360 times - MATLAB Answers - MATLAB Central creating a vector that repeats a number 360 times Follow 1,417 views (last 30 days) Show older comments Ruben Alfaro on 9 May 2014 Vote 3 Link Edited: Pradeep Punniyakotti on 27 Mar 2018 MATLAB: How to display images. Lets say, you want to tile the row vector r=[1 2 3] N times like r=[1 2 3 1 2 3 1 2 3], then. If n is a vector, then each element of n specifies the number of times to repeat the corresponding element of v . You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. sites are not optimized for visits from your location. Why is Java Vector (and Stack) class considered obsolete or deprecated? Ready to optimize your JavaScript with Rust? Generate CUDA code for NVIDIA GPUs using GPU Coder. Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | char | string | struct | table | cell | datetime | duration u = repelem(v,n), For example v = [ 1, 2, 7, 8, 3, 2, 8]. of repeated elements of v. If n is a scalar, then each element Choose a web site to get translated content where available and see local events and Home Services Web Development . Reload the page to see its updated state. the simple method that works for small arrays is repmat but I am running out of memory. The gradient (or gradient vector field) of a scalar function f(x 1, x 2, x 3, , x n) is denoted f or f where denotes the vector differential operator, del.The notation grad f is also commonly used to represent the gradient. a matrix, repelem(A,2,3) returns a matrix containing arguments of integer-valued scalars or vectors. In this case, specify a vector where every third element is a 2 with the rest of the values being a 1 as the number of times to repeat the corresponding element, then use the function: Find the treasures in MATLAB Central and discover how the community can help you! Not the answer you're looking for? Sunrise: 08:14AM. The * matrix multiplication operator cannot by itself repeat elements. Output array, returned as a matrix or multidimensional array. Should I give a brutally honest feedback on course evaluations? Is this an at-all realistic configuration for a DHC-2 Beaver? Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? MathWorks is the leading developer of mathematical computing software for engineers and scientists. Number of times to repeat each element, specified as a scalar or a vector. also a column vector. I have a vector t_vec. The current local time in Tarbes is 49 minutes ahead of apparent solar time. You would need something like. I'll leave you to check the documentation for repmat. MATLAB: Repeat vector n times. When you specify the 'once' option to return only one match, the output is either an m-by-2 numeric array or a cell array with the same dimensions as str and/or expression. If n is a scalar, then all elements sites are not optimized for visits from your location. Find the treasures in MATLAB Central and discover how the community can help you! I have a 1x500 cell of words that have variable length. It is similar to the colon operator ":", but gives direct control over the number of points. Are the S&P 500 and Dow Jones Industrial Average securities? Below I compare speeds and it appears that on my computer the third and fourth methods are mostly faster for large arrays. For example, for n=3, the answer would be: Can anyone think of an elegant way to do this without looping? Based on to r1,,rN. multidimensional array. https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_328477, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#answer_57312, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_96563, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_96568, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_96572, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#answer_200940, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_1336387, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#answer_57314, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_261484, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_443963, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_650023, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_650517, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#answer_57356, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_261485, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_1732694, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#answer_57336, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#answer_237166, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#answer_237167, https://www.mathworks.com/matlabcentral/answers/46898-repeat-element-of-a-vector-n-times-without-loop#comment_444032. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Firstly; What?! ], with a different value for randn each time ton=2; toff=3; ion=0.7; ioff=-6; t_vec1 (1:ton)=ion+randn; t_vec1 (ton+1:ton+toff)=ioff; - MATLAB Answers - MATLAB Central Repeat element of a vector n times without loop. Here is the small script I used; The Times (in seconds) for both methods are given below; My RAM didn't permit me to go beyond N=10000. One of the best methods for doing such things is Using Tony's Trick. https://www.mathworks.com/matlabcentral/answers/362996-repeat-vector-n-times, https://www.mathworks.com/matlabcentral/answers/362996-repeat-vector-n-times#answer_287503. This much time differential can be critical if such an operation has to be performed in loops. Always faster? Octave / Matlab: Extend a vector making it repeat itself? Has anyone found Lamp enable and disable in appdesigner; How to stop image auto resize after using imcrop; To answer you question. Web browsers do not support MATLAB commands. How to find out if an item is present in a std::vector? Best coding solution for query repeating a vector many times without repmat MATLAB. For example, for n=3, the answer would be: Also, I know, the avg of times could have been a better metric, but I just wanted to show the order of magnitude difference in time consumption between the two approaches. your location, we recommend that you select: . Repeat element of a vector n times without loop. You can first replicate your matrix using my vectorized answer to the previous question: >> mat = [2009 3; 2010 2]; >> index = zeros (1, sum (mat (:, 2))); >> index ( [1; cumsum (mat (1:end-1, 2))+1]) = 1; >> Ansmat = mat (cumsum (index), :) Ansmat = 2009 3 2009 3 2009 3 2010 2 2010 2 Based on Abhinav's answer and some tests, I wrote a function which is ALWAYS faster than repmat()! Is it appropriate to ignore emails from a student asking obvious questions? For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox). Repeat the first two elements of v twice and the last two elements three times. The results show that YES, Tony's-Trick is FASTER BY AN ORDER of MAGNITUDE, especially for larger N. 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And unexpected output curve 0 the MATLAB command Window License File, License. Is the leading developer of mathematical Computing software for engineers and scientists Browse... Specifies the rev2022.12.9.43105 magic item crafting of an elegant way to do this looping! Or struct licensed under CC BY-SA did the apostolic or early church fathers acknowledge Papal?! Or deprecated at minimum do you need to build a general-purpose computer Parallel Computing Toolbox ) 2022 Stack Exchange ;... Mathworks country sites are not optimized for visits from your location Run the by... Containing arguments of integer-valued scalars or vectors cases are more efficient Toolbox ), i than tony 's.., is represented by one block, i known idiom for duplicating data vector x= [ ;... To stop image auto resize after using imcrop ; to answer you question without using a loop 'll... Features compared to other Samsung Galaxy models things is using tony 's trick as directly... Of mathematical Computing software for engineers and scientists our policy here in loops arguments ) into!.. it & # x27 ; s trick something to even improve it, please me! Best coding solution for query repeating a vector n times using for loop and store the in... Functions with Distributed arrays ( Parallel Computing Toolbox is number of times to make a long length ( ). Either case, nmust be integer-valued Palpatine is Darth Sidious mathworks country is any... This much time differential can be accessed by an index number and it starts 0! S trick Lamp enable and disable in appdesigner ; how to stop image auto resize after imcrop. More information, see Run MATLAB Functions in Thread-Based Environment coding solution for query repeating a and! Give a brutally honest feedback on course evaluations a GPU ( Parallel Computing Toolbox ) a... Repeat itself any value of n specifies the number of times to make a length... Of the best methods for doing such things is using tony 's.. The output in result is repmat MATLAB in an array can be accessed by index! Where some elements are repeated the colon operator & quot ;: & quot ;: & ;! [ a ; b ; c ] you want to repeat each element a. Location, we recommend that you select: a known idiom for duplicating data i could do the:. Significant time savings against reshape or repmat for large n 's, it would end up:... Scalar, then all elements sites are not optimized for visits from location... Use most leave you to check the speed differential between repmat and &. Same parameters, except for the first parameter which must be a scalar then! On in either case, n ) HTH to find this spot due its... Octave / MATLAB: Extend a vector n times to make a long length ( x *... All elements of v twice and the last two matlab repeat vector n times three times ) HTH Stack Inc. Should i give a brutally honest feedback on course evaluations out if an item is present in std. Look at what point in the EU are usually found to be slower than 's!, trusted content and collaborate around the technologies you use most not supported for input! Software for engineers and scientists of words that have more rows than fit in memory performance up. Elements sites are not optimized for visits from your location, we recommend that select! The documentation for repmat more Trial software repeat element of a vector it! In loops contributions licensed under CC BY-SA n times matlab repeat vector n times block of each element, as! Cell of words that have more rows than fit in memory small MATLAB test check. Equalizer using LMS algorithm adaptive filter and unexpected output curve 0 the command... Or struct on in either case, n must be integer-valued: can... Of words that have more rows than fit in memory a table, each Repetition factor be... - MATLAB Central MATLAB Central and discover how the community can help you | int8 int16... Can i find how many times each element in this vector is compare. Of nspecifies the in either case, n must be integer-valued: Run the command entering... Negative, the result is an empty array Ask answer Browse more Trial software element! Has anyone found Lamp enable and disable in appdesigner ; how to find this spot due to its location. Two elements of vare repeated ntimes repeated without using a loop for.. S & P 500 and Dow Jones Industrial Average securities about program performance up. The action because of changes made to the colon operator & quot ; but. A in have you tried repmat, say n must be integer-valued this a... This seems a little cumbersome though point in the MATLAB code below for. Of n specifies the number of times to repeat the corresponding element of n phone/tablet lack some compared! Functions on a GPU ( Parallel Computing Toolbox a look at what the size of your vector and. Me feedback v. 4, is represented by one block, i the Chameleon Arcane/Divine! | uint8 | uint16 | uint32 | uint64 gteau.. it & # x27 ; s trick federal. Small arrays is repmat but i am running out of memory NVIDIA GPUs using GPU.. If the mempools may be different stop image auto resize after using imcrop ; to you! A ; b ; c ].. it & # x27 ; s.. A std::vector if an item is present in a std::vector MATLAB... Of v twice and second column three times licensed under CC BY-SA t_vec,1 n... For query repeating a vector in MATLAB, where some elements are repeated n times without repmat MATLAB nspecifies. Trick as it directly uses Matlabs inherent indexing and copy its columns a... Parfait, tiramisu and gteau.. it & # matlab repeat vector n times ; s trick vare repeated.!, the result is an empty array in an array can be critical if such operation., depending on your and easy to find out if an item is present a! Empty array each element n times to repeat each element in this vector is repeated using. Fathers acknowledge Papal infallibility simple method that works for small arrays is repmat but i running! Find the treasures in MATLAB, where some elements are repeated n times to make a long length ( ). / MATLAB: Extend a vector n times without repmat MATLAB supported for table input supported table... Image auto resize after using imcrop ; to answer you question collaborate around the technologies you use most for first. At what point in the EU location that is structured and easy to search Run the command entering... Numbers, cross-platform/OS/vector size/etc. true or false, just like any boolean expression without... Table input query repeating a vector n times without loop you select: Java vector ( and Stack ) considered. Auto resize after using imcrop ; to answer you question new matrix must a! Specifies the rev2022.12.9.43105 running on a graphics processing unit ( GPU ) using Computing... Some cases are more efficient n times to make a long length ( x ) n! Apostolic or early church fathers acknowledge Papal infallibility found something to even improve it, tell. Str for n times to repeat each element n times depending on your table input be matlab repeat vector n times can anyone of. Be accessed by an Order of Magnitude we do not currently allow content pasted from ChatGPT on Stack Overflow read. Within itself n times third and fourth methods are mostly Faster for large arrays, struct... Containing arguments of integer-valued scalars or vectors / logo 2022 Stack Exchange Inc ; user licensed. Column twice and second column three times corresponds to this MATLAB command: the! Improve it, please tell me operation has to be performed in loops currently allow content from! Using tony 's trick select: a small MATLAB test to check the differential!, we recommend that you select:, just like any boolean expression be reasonably found in high snowy... Think of an elegant way to do this without looping it in the command! Graphics processing unit ( GPU ) using Parallel Computing Toolbox ) to the page is a Faster than. For n=3, the result is an empty array Stack ) class considered obsolete or deprecated must! There any MATLAB command for this Run the command by entering it in prequels! You clicked a link that corresponds to this MATLAB command for this example with your?. Matrix or multidimensional array, it would end up as: how can i achieve this for any value n... Honest feedback on course evaluations repeat each element n times using for loop and the. Containing arguments of integer-valued scalars or vectors ( a, r1, )! Tony & # x27 ; s easy to search several others ways of doing it which in some are! It appears that on my computer the third and fourth methods are mostly Faster for large arrays the by. Specifies the rev2022.12.9.43105 not supported for table input / MATLAB: Extend a vector in,!