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Integrated area [message #49034]

Fri, 09 June 2006 05:44

Julio[1]
Messages: 52
Registered: May 2005

Member

Hi, let me try to explain my question...

Supose I have a curve defined my the vectors x and y:

x=indgen(10)
y=[0.2, 0.25, 0.34, 0.40, 0.55, 0.60, 0.52, 0.42, 0.30, 0.28]

Now I'm calculating the area of the curve between 2 and 8 (in the x
axis):

Area=int_tabulated(x[2:8],y[2:8])

This returns me the area below the curve considering y=0, the point
where x and y crosses. However, I need to calculate the area below the
curve considering y=0.2. How can I do that... I hope I was clear to
explain my doubt -:)

Any comments welcome,

Best,
Julio

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