Message-ID: <49CBEB4F.4060905@zevross.com>
Date: 2009-03-26T20:53:35Z
From: Zev Ross
Subject: RPyGeo Query -- probably easy
Hi All,
I'm wondering if anybody could give me a little guidance on formatting a
query using RPyGeo. I'm excited to be able to run Python geoprocessing
functions straight from R but am having trouble with the quote, double
quote kinds of issues.
Here's an example of what I'd like to run
rpygeo.geoprocessor("makefeaturelayer('X:\\abc.shp',
'walk')", "SelectLayerByAttribute('walk','NEW_SELECTION', ' "hrwk05"
'<>0")",env=myenv)
Where the sticking point is hrwk05 <> 0. In Python my query would be
double quote, field name, close double quote, comparison, number e.g,
"hrwk05" <> 0 but I'm not sure how to put this into RPyGeo
If I run like so:
rpygeo.geoprocessor("makefeaturelayer('X:\\abc.shp',
'walk')", "SelectLayerByAttribute('walk','NEW_SELECTION', '')",env=myenv)
it runs.
Thank you in advance for assistance.
Zev
--
Zev Ross
ZevRoss Spatial Analysis
120 N Aurora, Suite 3A
Ithaca, NY 14850
607-277-0004 (phone)
866-877-3690 (fax, toll-free)
zev at zevross.com