From e00b08a12a9626fea0f46d3363bec6c9dfb82dd4 Mon Sep 17 00:00:00 2001 From: parkrrrr Date: Thu, 31 Jul 2003 14:38:44 +0000 Subject: [PATCH] add polygon caveats --- gpsbabel/README | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/gpsbabel/README b/gpsbabel/README index 9cfc48d41..2f6cbccc6 100644 --- a/gpsbabel/README +++ b/gpsbabel/README @@ -509,6 +509,10 @@ DATA FILTERS specify the exclude option, which reverses the operation of the filter so that it only includes points that are NOT in the polygon. + Note that this filter currently will not work properly if your polygon + contains one or both poles or if it spans the line of 180 degrees + east or west longitude. + For example, assume you have a polygon file that defines the border of your county, called mycounty.txt. This command line will give you only the points in your county: -- 2.30.2