Question

I need use Delphi to create an application about GPS almanac. Something like this:

Where can I download the data and read them? (to plot them).
My user must be select a day and a latitude/longitude position, then I need plot the GPS availability for next 7 days. Where I can download this information and read them with delphi?

Answer 1

You can use the method GET from a TIdHTTP and get files from: http://www.navcen.uscg.gov/?Do=gpsArchives

For example:

IdHTTP.Get('http://www.navcen.uscg.gov/?Do=gpsArchives&path=almanacs&year=2012&file=8101&type=almanacContent--almanacId&name=001.ALM', ms);