From f5ba2f0c6e1b267862a923fe5eb5758428a15c10 Mon Sep 17 00:00:00 2001
From: parkrrrr <parkrrrr>
Date: Thu, 31 Jul 2003 14:38:44 +0000
Subject: [PATCH] add polygon caveats

---
 README | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README b/README
index 9cfc48d41..2f6cbccc6 100644
--- a/README
+++ b/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