[Qgis-user] gps plugin

[Alex Mandel]

What does gdalinfo print out when applied to your geotiff?

Do you mean you want to convert from 3310 to EPSG 26910 or 26911 (NAD 83
 zone 10 or zone 11, I'm not sure what part of California you are in.)

WGS 84/UTM 10,11 appear in my QGIS install as EPSG 32610. 32611 but I'm
not sure if GDAL reads from the same database as QGIS(I'm pretty sure it
doesn't) so it might not be a built in projection and you might need to
use the full proj strings when doing the gdalwarp.

Alex

mtnbiketrail at zzz.com wrote:
> Actually, I wanted to transform the geotiff to wgs84 utm, but all
> methods have failed.
> I tried using the FWtools GUI conversion, but I must be doing something
> wrong, I can't get it to work. I also tried gdalwarp command line with
> no success. gdalwarp does not recognize the original projection for some
> reason.
> 
> Micha Silver wrote:
>> 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.
>> ------------------------------------------------------------------------
>>