Dear fellows !
I have about 15000 observations in x and y column named by var1,var2 :
(var1 means x , var2 means y)
var1 var2
22.5 6.27425E-07
27.3 4.35712E-06
30.71428571 1.21999E-05
. .
. .
. .
Now I'd like to make cumulative integral: value until 22.5 in var3,
value until 27.3 in var3, value until 30.71428571 and so on.
How to make this most quick ? I'd like to work with cubic splines.
if I say integ var2 var1 I only get last cumulative value.
thank you for any advice !
Andreas
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