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how to compare two matrix by graph?

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vanita
vanita 2014-8-7
评论： Iain 2014-8-8
I am generating matrix by two different algorithm. Now i have two Matrix R1 and R2. by finding difference between them or by ratio they are nearly same. ratio of each element is nearly 1.00003 and difference of each element is 10^-12.
Now,to represent analysis i want to show them on a graph. How to do that?

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采纳的回答

Iain
Iain 2014-8-7
matrix1 = rand(3,5);
matrix2 = rand(3,5);
difference = matrix2-matrix1;
imagesc(difference)
  2 个评论
vanita
vanita 2014-8-8
Thnx Latin. I'm working on signal processing. I was using same but not sure whether i can use it for any data or just for image it is worth.
Iain
Iain 2014-8-8
Latin? lol
You can definitely use that for analysis (well, displaying the data in a graphical format). There are lots of things you can do with it - changing the colour scheme (colormap) or putting on a scale (colorbar) to make it better for what you need.
Depending on what you want, you should pick the ideal plotting system. - e.g. surf, mesh, plot, plot3, plotyy, stairs, stem, bar, pcolor, contour etc. etc.

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更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-8-7
R1=sin(0:0.1:10)
R2=R1+1e-12*rand(1,numel(R1))
er=R2-R1
plot(er)

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