I am trying to create a format file which will output a waypoint with lat/log = gpsdestlatitude/gpsdestlongitude, if present and if not present use gpslatitude/gpslongitude.
I tried something like this
#[BODY] <wpt lat="${gpsdestlatitude#;($gpsdestlatitude)?$gpsdestlatitude:$gpslatitude}" lon="$gpslongitude#">
#[BODY] <wpt lat="${gpsdestlatitude#;$_= (($gpsdestlatitude)?$gpsdestlatitude:$gpslatitude)}" lon="$gpslongitude#">
#[BODY] <wpt lat="${gpslatitude#; my ($lat)=$gpsdestlatitude#;if (defined $lat) $_= $lat }" lon="$gpslongitude#">
but this gives me an error
Global symbol "$gpslatitude" requires explicit package name (did you forget to declare "my $gpslatitude"?) for 'gpsdestlatitude' - and lat is set = ""
These do not error but gpsdestlatitude is not used
#[IF] ${gpslatitude;$_ = $gpsdestlatitude if not defined $gpsdestlatitude} } ${gpslongitude}
#[BODY] <wpt lat="$gpslatitude#" lon="$gpslongitude#">
If I switch the logic and test for gpsdestlatitude then only files with the tag gpsdestlatitude is processed..
Wondering if there is any way- to use the fmt file, and use conditionals within that to get a custom gpx?
Or does this kind of processing require a full script? Thanks
You can't access other tags directly from inside an advanced formatting expression. Instead use GetValue() like this:
#[BODY] <wpt lat="${gpslatitude#; my $lat=$self->GetValue('GPSDestLatitude','ValueConv');$_ = $lat if defined $lat}" lon="${gpslongitude#; my $lon=$self->GetValue('GPSDestLongitude','ValueConv');$_ = $lon if defined $lon}">
I don't have time to test this, but it should work.
- Phil
This is awesome. I can make this work. Thanks so much.