MATLAB: How to filling a matrix

ditheringMATLABMATLAB and Simulink Student Suitematrix manipulation

how to fill a matrix of size 180 * 180 by results obtained by another program knowing that I will go through the matrix in a way 4 * 4 example

The first box must be filled by 3 values of 1 and a 0 by the following four boxes by 2 values of 1 and two values of 0, the following four values a value of 1 and a value of 0, and so on. at the end of the matrix 180 * 180

note: the number of values of 1 and 0 is the output of another program and it is the program entry that I am developing it

Resulat=[1,0,1,1,0.0,………

1,1,0,0.0.1,……….]

Best Answer

Well you could use blockproc() to march along the data one element at a time and replacing the output block with the number of zeros specified in the input block in random locations. This requires the Image Processing Toolbox. Essentially it's

outputMatrix = blockproc(outputMatrix,[windowSize windowSize], myFilterHandle)

A full demo is attached.

A =

4 2 1 4 1

4 4 4 2 4

1 3 3 4 2

1 4 4 4 2

outputMatrix =

1 1 1 1 0 0 1 1 0 0

1 1 0 0 0 1 1 1 0 1

1 1 1 1 1 1 0 1 1 1

1 1 1 1 1 1 1 0 1 1

1 0 1 1 1 1 1 1 1 1

0 0 1 0 0 1 1 1 0 0

0 0 1 1 1 1 1 1 0 1

1 0 1 1 1 1 1 1 1 0

Note how each 2x2 block of the output array has as many 1's in it as the corresponding number in the input array A.

Related Solutions

MATLAB: Take the array which is less than 3

A(A<3)

MATLAB: How to export a cell array, into excel, with elements of different sizes

You have to extract the arrays from each cell and put them into individual cells. So, for example with the first cell, you need to do something like

theArray = originalCellArray{1}; % Extract first cell.
ca = cell(288,3);
for row = 1 : size(theArray, 1)
  ca{row,1} = theArray(row);
end

Do that for each of your 3 cells. You can have them all in one cell.

theArray = originalCellArray{2}; % Extract second cell.
for row = 1 : size(theArray, 1)
  ca{row,2} = theArray(row);
end
theArray = originalCellArray{3}; % Extract third cell.
for row = 1 : size(theArray, 1)
  ca{row,3} = theArray(row);
end
xlswrite(filename, ca);

You might want to read this before you start (in case I programmed something up incorrectly - I didn't test it): http://matlab.wikia.com/wiki/FAQ?title=FAQ&cb=8838#What_is_a_cell_array.3F

Best Answer

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MATLAB: Take the array which is less than 3

MATLAB: How to export a cell array, into excel, with elements of different sizes

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