Hello everyone,  I have a table with 2 columns containing geographical
coordinates (lat, long) and one column containing attribute data.  This is a
data frame object which I would like to convert into a grid object.  It is
the 7.3 mb "california" file on this page:

http://earthquake.usgs.gov/research/hazmaps/interactive/vs30/predefined.php

I tried to use the "gridded" command, but it did not work for my data. Is
there any other method?  Thank you!

Mehdi Khan

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