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how to run the m-file several times
It is not entirely clear to me what you try to achieve. If you want to load s from different mat files, you can do so using ...

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Help on conversion of data
With 4 bits you can code 32 numbers, like the integers from 0 to 31. You cannot convert double precision numbers between 0 and 1...

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How do I get the element of a cell in a case_expression that matches the switch_expression?
You can use a(strcmp(a, b))

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How can I extract the last rows of specific columns of a text file
Read the data from file, ignoring 1 header line: data = cell2mat(textscan(fopen('a.txt'), '%f%f%f', 'headerlines', 1)); ...

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Error using fgets Invalid file identifier. Use fopen to generate a valid file identifier.
Add if fid == -1 error('Cannot open file.') end You probably misspelled txtfile or it is not in the current direc...

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Rearranging column of m by 1 matrix.
reshape(reshape(D, 2, [])', 1, [])

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How to delete the nth element from all the variables in my workspace?
x = whos; n = 2; for i=1:numel(x) eval([x(i).name '(' int2str(n) ')=[];']) end

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Inverting and reshaping matrix which includes NaNs
You can rearrange the matrix by reversing the order of the non-NaN elements in each row such that the first column represents th...

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If 'variable' is an indexed variable, performance can be improved using logical indexing instead of FIND
mpc.bus(mpc.bus(:,2)==3, 2) = 1; mpc.bus(mpc.bus(:,1)==mpc.gen(16,1), 2)=3;

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Minimum y-value in each column
[~,idx] = max(X); Note that this returns 1 for columns that are all zero.

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How to merge a contour plot with the image it is derived from
I failed to run your code, because >> contour(flipud(image)); Error using flipud (line 19) X must be a 2-D matrix. ...

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Wind rose - how to remove axis?
rose uses polar to plot, so you can remove the lines as you would do for polar <http://www.mathworks.com/matlabcentral/answers/...

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How to find least 8 values in a 1xN row matrix with their positions?
[~, ind] = sort(A); B = ind(1:8)

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how to write in the text file?
FN1 = 'JDA'; mn = 1:12; yr = 9:13; ext = '.ohh'; format = sprintf('%s%%03d%%02d%s\n', FN1, ext); ...

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drawing a line using drawnow
axes axis([x_1-10 x_2+10 y_1-10 y_2+10]) hold on tmax = 5; for t=0:0.01:tmax plot(x_1+(x_2-x_1)*t/tmax, y_1+(...

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Find Diverging point of two arrays
You can compute the difference between both lines and find the point of divergence when the difference exceeds some threshold. ...

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Why I am getting an error like image Indexed CData must be size [MxN], TrueColor CData must be size [MxNx3]
<http://blogs.mathworks.com/steve/2011/09/27/digital-image-processing-using-matlab-reading-image-files/#5> Use 'Index' to add...

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Subscripted assignment dimension mismatch.
The variables G1, G2, G3, G4 are 1x365, so N1(i) + (G1+2*G2+2*G3+G4)*(h/6) is 1x365, and you try to assign this vector to a sing...

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How to create a loop in matlab codes?
theta = 23; % some starting value for i = 1:10 % run 10 times, for example a = exp(i); % sample computations for a, b,...

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Please help me to fix Index exceeds matrix dimensions error.
splittedLine{2} seems to have fewer than 2 cells.

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Doubt in fprintf with double bar
\ starts many escape characters, like \n or \r. To print a single \, you have to use the escape character \\. fprintf(fileI...

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How can I get square brackets on a Swiss macbook keyboard?
alt-5 alt-6

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Read batch data files
Use dir to get the names of the files and then use a for loop to process the files.

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Histogram-based segmentation error
Use imshow(C, []) Because you scaled B with 255, the m values are within the range [0 255], so your C is in the range [...

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Hi,I have numerical matrix 4X4, I have to classify numbers in grades like less than 20, greater than 20 and less than 20, so Hhow can I do it?
X = randi(30, [4 4]) g20 = X(X > 20) le20 = X(X <=20)

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fill a matrix from vectors
v1 = [1 2 3]; v2 = [3 4 5]; M = [v1; v2]

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problem with opening a 'ftp' link in Matlab
f = ftp('sidads.colorado.edu') data = mget(f, 'pub/DATASETS/nsidc0032_ease_grid_tbs/global/2013');

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Problem with dimension of a vector
For cont == 7, the expression x(j,i) >= front is always false so funVal(cont,j) = exp(-rho*tauStar(1,j))*(pStar(1,j)-c); ...

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if I want to evaluate the avarage distance from the midpoint of a generic trajectory would just like this ...?
mean(DM)

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How do I use csvwrite in order to give me the data in a column and NOT in a single comma-separated line?
If the data is a column vector, it is printed as such csvwrite('test.txt', (1:5)') >> type test.txt 1 2 3 ...

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