GPS website calcs

It seems that Rebol may be a solution to a programming problem I have. I'm not really a great programmer - I generally just do throw-away scientific progs for myself - and I'm new to Rebol, so I'm looking for someone to tell me whether or nor Rebol is the way to go. What I need to do is display GPS satellite positions in the sky at a given date/time/position overlaid on a graphic showing which ones will be masked. I think Rebol will simplify this if I can take advantage of websites that will do the satellite part of the calculation for me. For example, if I can get Rebol to send data into http://sirius.chinalake.navy.mil/satpred/satpred_query.cgi and then activate the 'Predict Satellites' and then capture and parse out the satellite positions from http://sirius.chinalake.navy.mil/satpred/satpred.cgi then all I'd have to do is overlay them on a view of the mask. Does Rebol have commands to use a website in this way? thnx, Brent Meeker There are two ways to write error-free programs. Only the third one works.

This should be simple enough. You can view source on the page and discover all of the input variables (e.g. <INPUT NAME = "latmin">) and just send the input to the URL using the query string (e.g. http:// sirius.chinalake.navy.mil/satpred/satpred.cgi?latmin=12&latsec=55 ). Use 'read to read the result: gps: read http://sirius.chinalake.navy.mil/satpred/satpred.cgi?latmin=12& latsec=55 and then just parse out the result. This is cake for REBOL. -Ryan

Hi Brent,

> example, if I can get Rebol to send data into > http://sirius.chinalake.navy.mil/satpred/satpred_query.cgi and then > mask. Does Rebol > have commands to use a website in this way?