[GRASS-user] new user setting up a new mapset/project, part 2

[mtnbiketrail at zzz.com]

Okay. some details.
I am working in California maps. I had trouble creating a new 
project/mapset, but it is working now. I used r.in.gdal to bring in the 
Geotiff and Grass sees it as NAD83 Albers Conical. I tried to use the 
command gdalinfo and Grass could not file the file. Even though it is 
showing in the Map Display.
Whatever.
here is the g.region -p, I have no idea if it is correct. I don't 
understand the negative west, east numbers yet.

projection: 99 (Albers Equal Area)
zone:       0
datum:      nad83
ellipsoid:  grs80
north:      405480.97282175
south:      391273.11966856
west:       -271733.88910031
east:       -260832.03532599
nsres:      1.52772615
ewres:      1.52772615
rows:       9300
cols:       7136
cells:      66364800

My next question is: I need this base Geotiff in UTM WGS84. From what 
the other email said, I have to create a new location. Does the area 
covered have to be the same? I am still having a hard time with the 
project region syntax.

I also have GPS  waypoints(in UTM, WGS84) I want to bring into the 
mapset. From what I read points should be treated as vectors? Is there a 
way to mass import points into the database?

I ordered the Neteler book, I hope it has real examples.

Thanks,
Tom

Tom Russo wrote:
> On Sun, Jul 20, 2008 at 08:28:54PM -0700, we recorded a bogon-computron collision of the <mtnbiketrail at zzz.com> flavor, containing:
>   
>> I'm confused.
>> I want to set up a new project and use UTM wgs 84.
>> But, some of my data is drg(base USGS topo map), which are lat/long,  
>>     
>
> Most USGS DRG topo maps are georeferenced in UTM (only those that have been
> monkeyed with by other agencies are not).  Some state and local GIS departments
> reprocess them with software that removes the TIFF tags that GDAL would use
> to figure out what to do with them, even when they don't change the projection.
> Any USGS topo for California will have been reprojected to an equal-area 
> projection, and any USGS topo covering territory under the authority of the 
> Tennesee Valley Authority will be in UTM but with no geotiff tags necessary
> for GDAL to recognize them.  But real USGS topos for any other part of the
> US should be in UTM and have GeoTIFF tags identifying the coordinate system.
>
>
>   
>

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