308 reputation
210
bio website stanford.edu/~rpsharp
location Mountain View, CA
age 35
visits member for 2 years, 2 months
seen May 16 at 18:53
stats profile views 33

I used to teach computer science at a small liberal arts college. Currently software developer at an NGO.


May
25
asked How to provide transform information to openlayers on Image layer
Apr
11
comment How do I convert affine coordinates to lat/lng?
Thanks @whuber, great idea.
Apr
11
awarded  Editor
Apr
11
accepted How do I convert affine coordinates to lat/lng?
Apr
11
comment How do I convert affine coordinates to lat/lng?
Thanks iant, this put me on the right track.
Apr
11
revised How do I convert affine coordinates to lat/lng?
Posted solution
Apr
11
comment How do I convert affine coordinates to lat/lng?
Maybe this is what I'm after. Is the "epsg:4326" a transform to global lat/lng? I think I see some classes where I can provide a projection, I was thinking "WGS:84", but I don't know the difference.
Apr
11
comment How do I convert affine coordinates to lat/lng?
I read the geotransform section of the link you provided, but I don't think this is what I'm after. Sorry if I am being obtuse, but doesn't this describe how to project x and y indices (0 to XSize or YSize) to projected coordinates? I'm curious how you translate projected coordinates into latitude and longitude. As a simple example, the geotransform defines the x/y origin of the upper left hand corner of the raster in projected coordinates (447466.693808, 4952570.40529). How would I turn those coordinates back into lat/lng (something like lat: 44,lng: -122).
Apr
11
comment How do I convert affine coordinates to lat/lng?
@Dan Thanks, so I know I can get the projection via a dataset.GetProjectionRef() and find out I'm using "UTM Zone 10", but then what? I'm googling around for methods like "unproject" but am coming up null.
Apr
11
asked How do I convert affine coordinates to lat/lng?
Apr
7
awarded  Scholar
Apr
7
awarded  Supporter
Apr
7
accepted Is there a ArcGIS python script development API?
Apr
5
awarded  Student
Apr
5
asked Is there a ArcGIS python script development API?
Mar
19
awarded  Autobiographer