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Export to a fixed width text file
Use sprintf / fprintf Here is an example of making everything 16 characters wide: A={'s09' 1111222003 321 'P' 'ehz';'z09...

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How to do this programming
You don't actually want 5 different variables. You want to reshape the variable and index into it. Example: X = 1:20; ...

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Question about optimizing reading data from text file
You may want to use fread and regexp. Without seeing your file, I can't say for sure this will produce the same result, but i...

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Reading/Finding data withing column
[~,ind] = ismember([1 1 0],constants(1:3,:),'rows'); constants(ind,4)

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How do I remove duplicates from a structure array?
It's not pretty, but this should work: isUnique = true(size(animals)); for ii = 1:length(animals)-1 for jj = ...

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How can I sort a matrix according to column IDs and identify same combinations?
*Accumarray* would come in handy here. It's a rather useful function, but might take a little bit of reading to understand it co...

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Most efficient way to generate combinations
You can use allcomb (which can be found <http://www.mathworks.com/matlabcentral/fileexchange/10064-allcomb here>) a = (1:20...

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Convert Cell to Number for Plotting
help str2double doc str2double

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Sorting the name field in dir command
[~,ind]=sort({xlsFiles.name}); W = xlsFiles(ind);

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Using conditional breakpoints to print out value
Yes sir. It takes a bit of creativity. Here's an example. Let's print out "Hi" each time mod(ii,2) == 0. iff(mod(ii,2),f...

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scaling a vector from 352800x1 to 300000x1 by cutting last 52800 row elements?
x = rand(352800,1); x(300001:end) = []; size(x)

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Speeding up code: pre-allocation, vectorization, parfor, spmd....
It's really hard to say what exactly you can do without knowing the nature of what is inside those for-loops. Some ideas come...

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Question

Trimming the Size of a Array of Structures in a MEX file
Hi all. So i'm having a bit of an issue array of structures in a MEX file. I first initialize the array of structures to size...

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what will be value of 'b' when 'a' is equal to 0(zero)
help interp1 doc interp1

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Shaperead
That sounds like its in Universal Trans Mercator (UTM) coordinates. There are a few utm to geodetic coordinate transforms availi...

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How to import a country map with counties and have Matlab recognize the various counties?
Assuming you have the mapping toolbox, you could just import it via a shape file. They can be found below: <ftp://ftp2.census...

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logical indexing with a smaller array should throw a warning
This is an interesting proposition. While I'm very much against throwing an error in this case, I would be open to having a warn...

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How to: Axis Xtick steps
xbounds = xlim; set(gca,'XTick',xbounds(1):xbounds(2));

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Problems with xlsread function
I can't seem to recreate the problem. Try clearing and closing everything: values = {1, 2, 3 ; 4, 5, 'x' ; 7, 8, 9} head...

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passing 'varagin' and getting inputname() to work properly
You could use "evalin" In your example it would be something like: function struct = temp( varargin ) struct = ...

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How can I increase the size of data points in a discrete plot
Try the property MarkerSize. if true fig = open('myFig.fig'); hold on plot(xdata,ydata,'xg','MarkerSize',16); e...

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A bug of build-in function Char?
This is where MATLAB differs from C. C will assume that 0 is the end of the string. MATLAB has explicit start and end points of ...

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Using vertcat on multidimensional array data
x = rand(55,365,100); x_new = reshape(permute(x,[ 1 3 2 ]),5500,[]);

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What is the code?
skewness is simple 2 divided by the square root of the shape parameter for gamma distributions. Here's an example. skewness...

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how to detect folder address
You might consider mfilename pathh = fileparts(mfilename('fullpath')) help mfilename doc mfilename

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I'm trying to find if certain points are inside or outside a polygon
help inpolygon doc inpolygon

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How do I convert or save data from excel as asc file in order to analyse it using MATLAB.
You might not have to convert it to an ascii file. help xlsread doc xlsread

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View images in between loops
drawnow;

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Which is the fastest way to display gray scale images (480 by 640) ?
Try using drawnow instead of pause(x)

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Using 'single' arrays with the "filter" command
Make sure all your inputs to filter are singles. Here's an example for a simple moving average: x = rand(100,1,'single')...

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