Bar graphed 'stack' option

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nor
nor 2012-4-10
Hi, I have a problem when plotting a bar graph using the 'stack' option. The stacked bar graph I get do not give the right sum of the elements in the matrix when the elements are of negative values. I attached a simple matrix here A=[8 -1 -4 -2 3; 2 -5 -1 -2 -7]
The summation of the first row= 4 The summation of the second row= -13 The command >>bar(A,'stack) does not display the right summation. Can anyone please explain why is that so?
Thank you in advance.

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回答（2 个）

Sean de Wolski
Sean de Wolski 2012-4-10
If you want to see the sum, then you'll need to feed the sum of A into bar()
bar(sum(A,2),'stacked')
nor
nor 2012-4-10
Sorry to bother everyone. I have actually figures it out. The way the stacked bar is display is actually quite confusing.

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