Programmer Guide/Command Reference/EVAL/ydiff: Difference between revisions
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Revision as of 18:31, 18 November 2010
Contents
ydiff
Calculates the differentiation r of the vector y with n-1 elements.
Usage:
ydiff(y)
Parameters:
- y
- The y data vector.
Result:
r[i] = y[i+1] - y[i]
Usage:
ydiff(y,dx)
Parameters:
- dx
- The x increment.
Result:
r[i] = (y[i+1] - y[i])/dx
Usage:
ydiff(y,x)
Parameters:
- x
- The x data vector with
nelements.
Result:
r[i] = (y[i+1] - y[i])/(x[i+1] - x[i])
