great circle

[jpp142]

I have Geocart 3.1
I don't know how to draw a great circle.
It was so easy with Geocart 2.6.9

[daan]

Here is a sample. Just replace the center coordinate and radius (in degrees) to match what you want. Repeat the “great_circle” line for as many great circles as you need, and save it in a file with extension “.metric.txt”. You can add that file as a database. While a little harder than Geocart 2 for drawing a single great circle, it allows for much more flexibility. You can, for example, specify distance in meters, or portions of a great circle, or the great circle segment between two points. Please see the manual, Appendix J, for details.

Code: Select all

<metric_lines>
<great_circle center='20,120' radius='15' />
</metric_lines>