Greetings GRASSers:
First I'd like to say what a great book the Open Source GIS: A GRASS GIS
Approach (3rd edition) is. It is full of great practical and conceptual
examples. Well worth the money to anyone who has not purchased it yet!
Also a big thanks to the developers and users of GRASS who make it a
powerful and amazing GIS.
I have an ascii table of lidar data. The columns are x,y,z, and a fourth
column containing an integer code of some sort. I have looked at the
example in the man page about how to select columns for importing via some
shell manipulation of the input ascii file, but I do not think it is
applicable to what I'm doing (or perhaps the caffeine boost is not in effect
yet). I have also tried various combinations of parameters in v.in.ascii.
I would like to import the XYZ to build the geometry for 3D points, and have
only "Cat" and "Code" in the attribute table. ("Code" being a column name
for the 4th column in the input ASCII). I cant seem to find the combination
of column definitions and other parameters to achieve this. One option
seems to import them all as "x double, y double, z double, code int", and
then after the import, drop the x,y,z columns. Is it possible to put the
first 3 ASCII column values to the geometry, and use only the last column as
an attribute?
I'm using GRASS 6.2.3 and sqlite database.
Thanks out to anyone with some feedback.
Mark
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