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Slope of a graph [message #66324]

Fri, 01 May 2009 22:54

d.poreh
Messages: 406
Registered: October 2007

Senior Member

Folks
I have an elevation distance plot (elevation-distance) in 2D and I
want to calculate slope of this graph. For instance:
DL> x=findgen(100)
IDL> y=exp(-x)
I need to calculate the slope of this graph in 100 points
(corresponding to x). I tested DERIV function but seem shows incorrect
results! In our example for low x we have high slope and for high x
slopes are decreasing.
Any help highly will be appreciated.
Cheers

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Slope of a graph

By: d.poreh on Fri, 01 May 2009 22:54

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