[Qlandkartegt-users] Minor bug in calculation of descend

[Helmut S. <hs...@ar...>]

Hi,

if I load a .gpx Track where the first point does not contain elevation, 
the descend is calculated wrongly by QLGT.

See attach for an example .gpx which was converted from a NMEA log from 
my PNA Navi where the $GPGGA appears only each 4 seconds.

Please find attached also a probable bugfix (file descend.txt).

Best regards,

Helmut

P.S. Question from a Linux Newbie: How could I debug QLGT if necessary?
- How can I switch on compilation with debug info?
- Which debugger should I use (gdb?)?