<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
I have some line data measured in nautical miles.<br>
<br>
I want to draw these points on a map using the 4326 projection, the
srs entry for this projection gives the unit of measurement as
degree.<br>
<br>
A nautical mile is one minture of an arc of lattitude ie 0-60, the
projection is measured in 0-100.<br>
<br>
So does this mean that when I want to draw a line measured in
nautical miles, I have map 0-60 on to 0-100 grid , ie I have to
apply 0.6 factor ?<br>
<br>
So a line starting at lat 1.2 and ending at lat 2.7 becomes a line
1.12 to 2.42 ?<br>
<br>
regards<br>
<br>
<br>
Dave.<br>
<br>
<br>
<a href="http://en.wikipedia.org/wiki/Latitude"></a>
</body>
</html>