area under graph

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john
john 2012-2-20
how would I estimate area under curve using matlab?

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回答（1 个）

Andrei Bobrov
Andrei Bobrov 2012-2-20
>> doc trapz
ADD
c - your matrix "of flows"
dt = .5 % eg .5 sec
timeColumn = dt*(0:size(c,1)-1).'
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john
john 2012-2-20
thanks, ill look at that later but I was thinking of using an estimation using summation that its equal to sum*dt would there be a simple way of doing this? I have a matrix of flows and want to use one column of them and find the area of the graph of that column vs. time

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