On 27/06/12 16:27, Steve Richardson wrote:
> Hi,
> 
> I have a 1D dataset which I would like to integrate numerically and
> then plot.  Is this possible in Veusz?  I checked in Data->Operations,
> but didn't see anything like that.

Numpy has a trapz function which does trapezoid integration. You should
be able to use the create dataset dialog with an expression like

trapz(dataset, x=xvals)

or

trapz(dataset, dx=0.1)

See
http://docs.scipy.org/doc/numpy/reference/generated/numpy.trapz.html

It would be nice to have this as a plugin too, so the user wouldn't have
to know this, but don't feel obliged to write one.

If you write a plugin, just post it to the list (or send it to me)
giving me permission to distribute it under the Veusz license and I'll
include it.

Jeremy




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