Tagged Questions
2
votes
1answer
56 views
How to bulk import ESRI projections into Postgis
Where can I get a file that would allow me to bulk upload all of the ESRI projections into the spatial_ref_sys table of postgis. I know that you can get insert statements on spatialreference.org; ...
4
votes
1answer
245 views
Problems with lat long projection
Hi this seems like it should be an easy problem, but its been giving me a headache.
I have a .xls spreadsheet with about 60,000 rows. Most of them have Latitude and Longitude.
I simply want to ...
0
votes
2answers
124 views
Why is my shapefile being displayed in the incorrect position? [closed]
I imported a shapefile from the following link http://geocommons.com/overlays/176. However, it does not import correctly. The data comes in as a "mini planet" in the middle of the US. I only know this ...
1
vote
2answers
300 views
PRJ file for Stereo70 S-42 projection
I receive lots of Romanian maps with the projection STEREO70 with Datum "S-42 for ROMANIA". I have only found the "Stereo 1970.prj" by ESRI, and when I open the maps with my GIS software the ...
1
vote
1answer
333 views
Converting distance between nautical miles and degrees
This is such a basic question that I'm kinda of embarassed. Here is the situation:
We have a certain funcionality developed that:
Will check for a tolerance value (this input is given by the user ...
1
vote
1answer
175 views
Defining multiple projections inside a file gdb [error 000289 failed to alter spatial reference]
I am importing multiple shapefiles into a filegdb in ArcGIS 10, and using the following code to define the projection of the feature once imported, to the .prj of the original .shp file.
Here is my ...
3
votes
1answer
554 views
Is there a simple way to compute the UTM Zone from a lat/long point?
I am trying to convert a latlong point to UTM. To define UTM projection, I need to calculate zone for the point. I am trying to figure out the best way to do this. One way to do this would be use ...
12
votes
4answers
1k views
Does Re-Projecting an ESRI ShapeFile only update the content of the .prj file?
if i wish to change the projection of some shapefiles from .. lets say NAD83 (4269) to WGS84 (4326) ... and by using some 3rd party app .... does this mean the .prj file is only updated .. and not the ...
3
votes
2answers
277 views
How does ESRI, and how should anyone, transform a coordinate that lies outside a grid transform (e.g. NADCON)?
As I understand it, a datum transform (e.g. urn:ogc:def:coordinateOperation:EPSG::1241) based on a grid interpolation method, e.g. NADCON, is undefined outside of the grid of points. Therefore the ...
