MATLAB: Faster way of using fprintf

fprintf

If I have a large cell array say 10×26 where the first two columns are strings and the remaining columns are all numbers. Instead of having to write fprintf(1,'%s\t%s\t%f\t… and so on) is there a faster method which involves not having specify all of the fixed point notations.

Best Answer

You might try using REPMAT to specify one format for the numeric data that you repeat for the number of numbers you have. For example:

myData = {'a','b',1,2,3,4};
fSpec = repmat('%f\t',1,size(myData,2)-2);
fprintf(1,['%s\t%s\t' fSpec], myData{:})

Related Solutions

MATLAB: Read a column as numbers

This works just fine for me.

data=readmatrix('Data.csv');

MATLAB: How to approximate a data set from excel and plot over the original set

Hi Gavin,

If you're looking to plot every N-th point (reducing the total sample by a factor of N), you can do this very easily with indexing. Try adapting the example below to your needs.

myTime = (1:100)'; % Storing time separately
myData = [sin(myTime), cos(myTime), tan(myTime)]; % Fake data
n = 5; % Sample by taking every nth point
idxSamp = (1:n:size(myTime,1))';
% Plot original data and downsampled data
plot(repmat(myTime,1,size(myData,2)),myData,...
    repmat(myTime(idxSamp),1,size(myData,2)),myData(idxSamp,:));
legend({'s','c','t','down s','down c','down t'});

Hope this helps.

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Related Solutions

MATLAB: Read a column as numbers

MATLAB: How to approximate a data set from excel and plot over the original set

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