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Setting up an array which has a 4x1 matrix in each one of it's cells
X = repmat({zeros(4,1)},10,10)
Setting up an array which has a 4x1 matrix in each one of it's cells
X = repmat({zeros(4,1)},10,10)
13年以上 前 | 1
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Replacing string variables that satisfy some criteria by other string variables
looping over strrep would do, I presume: A = {...} Anew = {...} for k = 1: ..., Matrix(:,3) = strrep(Mat...
Replacing string variables that satisfy some criteria by other string variables
looping over strrep would do, I presume: A = {...} Anew = {...} for k = 1: ..., Matrix(:,3) = strrep(Mat...
13年以上 前 | 0
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Converting 1*4 array into 1*1
Avoid the overhead of converting numbers into strings and back ... Use simple school math and a matrix multiplication: a = ...
Converting 1*4 array into 1*1
Avoid the overhead of converting numbers into strings and back ... Use simple school math and a matrix multiplication: a = ...
13年以上 前 | 0
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replacing string variables with others
Short and simple: STRREP a = {'A','b','A','t'} ; strrep(a,'A','xxx') % ans = 'xxx' 'b' 'xxx' 't'
replacing string variables with others
Short and simple: STRREP a = {'A','b','A','t'} ; strrep(a,'A','xxx') % ans = 'xxx' 'b' 'xxx' 't'
13年以上 前 | 0
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How can I select randomly?
Random can be defined in two ways: % A is your original matrix Nrows = size(A,1) ; % number of rows % Option 1: r...
How can I select randomly?
Random can be defined in two ways: % A is your original matrix Nrows = size(A,1) ; % number of rows % Option 1: r...
13年以上 前 | 1
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Split array values into 2 elements
help rem help floor A = [126126, 138154,137146] B = [floor(A/1000) ; rem(A,1000)] B = B(:).' % for cosmetic pur...
Split array values into 2 elements
help rem help floor A = [126126, 138154,137146] B = [floor(A/1000) ; rem(A,1000)] B = B(:).' % for cosmetic pur...
13年以上 前 | 1
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How can I compare two logical vectors to a value?
or via De Morgan (http://en.wikipedia.org/wiki/De_Morgan%27s_laws) logi = ~(logix | logiy)
How can I compare two logical vectors to a value?
or via De Morgan (http://en.wikipedia.org/wiki/De_Morgan%27s_laws) logi = ~(logix | logiy)
13年以上 前 | 0
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how to add constant noise in image in matlab function?
See http://www.mathworks.com/matlabcentral/answers/55532-how-to-add-constant-noise-in-image
how to add constant noise in image in matlab function?
See http://www.mathworks.com/matlabcentral/answers/55532-how-to-add-constant-noise-in-image
13年以上 前 | 0
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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...
13年以上 前
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Asking about Susan filter
Have you tried Google ("SUSAN edge detection") ? It will help you finding a lot of information about SUSAN (all capitals as it i...
Asking about Susan filter
Have you tried Google ("SUSAN edge detection") ? It will help you finding a lot of information about SUSAN (all capitals as it i...
13年以上 前 | 0
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truncating a long for loop
Similar to this? N = Inf ; for k=1:N, if k > 10, break ; end end which will get you a warning: Warning: FOR...
truncating a long for loop
Similar to this? N = Inf ; for k=1:N, if k > 10, break ; end end which will get you a warning: Warning: FOR...
13年以上 前 | 0
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How to extend the matrix size by splitting up a column in two columns
A = [1 1 1800 1 ; 2 2 1815 2 ; 3 3 6512 3] C = A(:,3) c2 = rem(C,100) c1 = (C - c2)/100 output = [A(:,[1 2]) c...
How to extend the matrix size by splitting up a column in two columns
A = [1 1 1800 1 ; 2 2 1815 2 ; 3 3 6512 3] C = A(:,3) c2 = rem(C,100) c1 = (C - c2)/100 output = [A(:,[1 2]) c...
13年以上 前 | 1
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make column in a matrix: 1,1,1,2,2,2,3,3,3 etc
A(:,2) = ceil((1:size(A,1))/3)
make column in a matrix: 1,1,1,2,2,2,3,3,3 etc
A(:,2) = ceil((1:size(A,1))/3)
13年以上 前 | 2
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Determine the the slope and its uncertainty?
Do you also want to fit an offset? Polyfit does that for you, but you have to tell regress explicitly,. Example: x = 1:10 ;...
Determine the the slope and its uncertainty?
Do you also want to fit an offset? Polyfit does that for you, but you have to tell regress explicitly,. Example: x = 1:10 ;...
13年以上 前 | 0
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Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...
13年以上 前
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How can I generate the matrix [1 1; 1 2; 1 3 ; 2 1; 2 2; 2 3; 3 1 ; 3 2 ; 3 3] without loops?
COMBN! combn(1:3,2) ans = 1 1 1 2 1 3 2 1 2 2 ...
How can I generate the matrix [1 1; 1 2; 1 3 ; 2 1; 2 2; 2 3; 3 1 ; 3 2 ; 3 3] without loops?
COMBN! combn(1:3,2) ans = 1 1 1 2 1 3 2 1 2 2 ...
13年以上 前 | 0
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FACTORIALRATIO
Ratio of factorials, as in (a!b!c!...) / (d!e!f!g!...) (version 2.0, oct 2012)
13年以上 前 | ダウンロード 2 件 |
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NEXTPERMPOS
the next combination of values in specific positions (extension of PERMPOS)
14年弱 前 | ダウンロード 2 件 |
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split a vecor into several parts (of different sizes) to later fill a matrix.
Take a look at MAT2CELL and PADCAT % data V = 1:15 ; sz = [3 5 6 1] ; % lengths % engine C = mat2cell(V(:),sz,1...
split a vecor into several parts (of different sizes) to later fill a matrix.
Take a look at MAT2CELL and PADCAT % data V = 1:15 ; sz = [3 5 6 1] ; % lengths % engine C = mat2cell(V(:),sz,1...
14年弱 前 | 0
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KTHVALUE (v2.1, jun 2012)
select the k-th smallest element in a (randomized) list
約14年 前 | ダウンロード 1 件 |
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Reindex a vector
You are given two vectors of equal length. Vector N has numeric values (no Inf or NaN) while vector IDX has integers. Place th...
約14年 前
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Angle between two vectors
You have two vectors , determine the angle between these two vectors For example: u = [0 0 1]; v = [1 0 0]; The a...
14年以上 前
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Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...
14年以上 前
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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...
14年以上 前
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How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...
14年以上 前
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Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...
14年以上 前
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Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...
14年以上 前