[Qgis-user] gridding with a polygon

[Byron Veilleux]

i have a large geologic dataset that i want to grid and contour.
There is an irregular zero edge that bounds these data on one side and
a straight bounding area edge on the other sides.  If i create an irregular
polygon that encloses these data, is there a way to grid and contour such
that these data are truncated against the polygon and do not extend beyond?
-- 
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited
Calgary, Alberta Canada
byron at conjugategeo.com
Cell:4037108414
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