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How to get rid of the error: Error using horzcat. Dimensions of matrices being concatenated are not consistent.
This is not going well: thisLine=imresize(thisLine,[100 100]); imwrite(thisLine,['Datasets/',num2str(thisLine),'.jpg']);...

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Write a computer program that determines how many grades are between 0 and 19
help numel help for help if or help histc

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Why do I get this error "In an assignment A(:) = B, the number of elements in A and B must be the same"?
You seem to use the variable n in two ways: # an unsorted variable (vector? or array?) # the number of elements of something...

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Difficulty with nested loop and arrays
for RowIndex = 1:... for ColIndex = 1:... CurrentValue = MyMatrix(RowIndex,ColIndex) end end...

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Vectorize for-loop that changes overlapping parts of an array
Easy when using convolution: logarray = logical([0 1 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1]) N = 2 ; out = conv2(...

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find combination of labels
A simple one-liner will do A = [618 574 608] B = [574 2;574 3;608 1;618 1;618 2;618 3;618 4] C1 = arrayfun(@(k) B(B(:...

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How to I use previously calculated value in next iteration until the value converges?
Your for loop just runs once, using the single value of a. You might do better using a while loop % init values go here ...

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How to create double spacing between all command prompts
No, you cannot change those properties in matlab. But why not copy the command window to a text processor and change everythi...

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Sum of numbers from a notepad file
If the text file only contains numbers,and there are the same amount on each row, try using load to read the file in matlab: ...

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FInd the distribution of some random numbers
There are so many distributions that you have to make some choices. First, look at the distribution of your numbers and, by shee...

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Logical indexing two dimensions. How do I avoid a nested for loop?
Pre-allocate *but also* put the transpose out of the loop! T = T.' ; A = zeros(400,400,9,64) for n = 1 : 64 fo...

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remove rows under certain condition
Assuming your X, Y, and Z variables are stored in three vectors of equal length [UniqueXY, ~, k] = unique([X(:) Y(:)],'rows...

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Formula for Poisson distribution
I am not sure why you have three parameters rather than 1. See <https://en.wikipedia.org/wiki/Poisson_distribution> In your c...

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how many times a string is present in a cell array
One of the simplest ways: a = {'2';'23';'231';'2312';'23121';'231213';'3';'31'}; b ={'2','21','','','','','';'3','32','...

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How to manipulate arrays inside a cell array?
Write a function that does this for a single element of the cell array and then use cell fun If you can write the function as a...

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find a cell array of strings in another cell array of strings
So you want the keep the elements in B that are not in A. This is known is the difference in sets, implemented in matlab like th...

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How to remove duplicates from a matrix without using unique?
I do not see any reason why you can't use *unique* A = randi(5,5,10) % some data C = arrayfun(@(k) unique(A(:,k),'stable...

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How to remove duplicate observations in a matrix after sorting it?
FINAL=[1001,4,5,2015;1002,4,5,2015;1001,4,10,2014;1003,4,10,2014] X = sortrows(FINAL,[1 4 2 3]) % not sure what you want he...

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how many times a string is present in a cell array
A job for COUNTMEMBER! Download it here from the file exchange: <http://www.mathworks.com/matlabcentral/fileexchange/7738-co...

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How do I sum all the y values of a scatter plot to turn it into a histogram?
The second output of *histc* provides the bins in which each data point is located. You can use this to sum the elements grouped...

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Steps between to elements of a matrix
This might help you further: A = [1 1 2 2 0 1 1 1 1 0; 1 0 2 2 0 1 1 1 1 0; 1 1 2 2 1 1 1 1 1 1; 1 1 2 2 1 1 0 1 0 1; 1 1...

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Is it possible to convert/transform a normally distributed random variable to a Poisson-variable?
You could try an <https://en.wikipedia.org/wiki/Anscombe_transform Anscombe transformation>: y = 2 * sqrt(x + 3/8)

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I cant create array x=[1 2], because of Attempt to execute SCRIPT horzcat as a function
What does the command which horzcat tell you? And does solve clear horzcat solve the problem?

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swiching elements of same vector
Easy: X = [20 0 0 0 100 0 0 50 0]' [i,~,v] = find(X) X(i) = [0 ; v(1:end-1)]

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About Cell arrays access
a{1}={'teste' 4}, a{2}={'meste' 5}, a{3}={'zeste' 6}, B = cellfun(@(x) x{1}(1),a)

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is there anyone assist me for write a for loop that will calculate the power n of a given number x on MATLAB?
n = 4 x = 2 y = 1 for k=1:n y = y * x end [x.^n y]

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How to apply efficient if-else statements in a big data cell array
It is a cell array, but each cell has a single number? Then you might be better of converting it to numbers first: N = cell...

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delete first x number of rows from a cell array
Each cell in the 4th row of A should contain a scalar, being 0 or another value tf = [A{:,4}] ~= 0 Aout = A(tf,:)

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i want to find row indices for each column having non zero values
A = [1 1 0 1; 1 1 0 0; 0 0 1 1] C = arrayfun(@(k) find(A(:,k)),1:size(A,2),'un',0) % C{x} holds the row numbers for whi...

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Search all strings occuring in structure
So, I assume: * in your array A, A(1:8) belong to the same number, A(9:16) to another mother, etc.. * There are N mothers an...

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