[Qgis-user] gps plugin

[Micha Silver]

mtnbiketrail at zzz.com wrote:
> Thanks for clearing that up. I'm using a geotiff from California, 
> Albers Equal Area, NAD83, and coords show as -268867,392264. No matter 
> what I tried, I could not get the gpx to plot over the geotiff, even 
> with projection on the fly. I wish I knew how to get the geotiff in 
> clean.
I see in the EPSG database of projections that there's epsg code 3310 
which is Albers Equal Area based on NAD83. If that is indeed the 
projection of the geotiff, then you could convert the gps file to a 
shapefile, (it will be in WGS84 Lat/Lon, epsg 4326) then use the fTools 
extension to convert to epsg 3310. You'll then have a new shapefile 
which should overlay on the geotiff properly.
-- 
Micha
>
> I ended up using a jpeg of the geotiff with no coords and 
> georeferencing, then used a delimited text plugin of the gpx extract 
> it to make it work.
> Tom
>
> Alex Mandel wrote:
>> It's working for me, with the attached file.
>> Also note that -123,41 is the correct order in QGIS. Which means if
>> you're expecting 41, -123 that does not exist and never will exist.
>>
>> My guess is that your raster is in a different projection, which means
>> you need to turn projection on the fly on and project your map to the
>> raster's projection. What are the coordinates when you zoom to the
>> extent and hover over the raster?
>>
>> Alex
>>
>>
>> mtnbiketrail at zzz.com wrote:
>>  
>>> I'm saying this is a bug with the gps plugin. I downloaded a couple 
>>> of gpx samples off the Internet. All files show lat first, then lon, 
>>> but the Qgis gps plugin reverses them; uses the lat as lon and lon 
>>> as lat. Ilooked at the gpx schema and the files I used look like 
>>> they conform to the schema.
>>> Tom
>>>
>>>    
>>>>       
>
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