MATLAB: How to show difference between two plotted data in graph

image analysisMATLAB

Hi all:

i plotted two series of data in graph now i want to differentiate between two graphs so i want to know difference of these two graphs in ploting by numerical data .

i mean what difference come between these two graphs it will show me numerically in graph .

d=[120 234 499 324 567 343 550 405 600 700]

m=[123 456 789 456 765 867 989 675 867 433]

figure

plot(d)

hold on

plot(m)

xlabel('solar radition ')

ylabel('haat gain')

legend('heat gain')

title('uuseful heat gain')

thanks in advance

Best Answer

Do you mean difference by this?

c = m-d
plot(c)

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sum(X(:)>100);

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Note that there are not only numbers in that string, it also contains 'S' characters apparently at random, e,g.:

>> f(8480:8500)
ans =
3 -118 S 623 1623 -71
%      ^ not digit character!

One simple and efficient solution is to remove those 'S' characters before using sscanf:

v = sscanf(strrep(f,'S',''),'%d');

This correctly returns all 4297 numbers in the string, and can be easily adapted (e.g. using regexprep to remove specific types of characters, e.g. if it is possible that other alphabetic characters might occur in the string).

The simplest and most efficient solution by far is this:

v = sscanf(f,'%d%*[S ]');

Nothing will beat that simple command in terms of simplicity or speed.

Best Answer

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