Tagged Questions
2
votes
2answers
63 views
Where can I get the list of Geographic Tranformations in ArcGIS and the area where they are aplicable?
I have some data in Provisional South American Datum 1956, and I need to project it to Web Mercator with WGS84 as the datum.
When I use the project tool in ArcGIS desktop, it requires a Geographic ...
1
vote
0answers
75 views
ArcPy 10.1 PointGeometry.projectAs()
I'm trying to reproject an X,Y passed in from an Add-in.
So far this works fine:
pointGeometry = arcpy.PointGeometry(arcpy.Point(x,y),srIn,False, False)
projectedPoint = ...
2
votes
1answer
34 views
OSGB conversion error
So I am using ArcGIS 10 and trying to work in British National Grid. My shape file is in WGS84 UTM30N. By chance I passed the shape file across to a colleague and we both transformed into BNG.
When ...
1
vote
1answer
169 views
Dynamic defining of transformation type for ISpatialReferenceFactory.CreateGeoTransformation call
Suppose given a point (IPoint) in some coordinate system. Required to transform it to another coordinate system. If both of coordinate systems are predefined, we can use IGeometry2.ProjectEx with ...
6
votes
1answer
4k views
How can I transform GCS_North_American_1983 to GCS_WGS_1984?
I posted a thread today describing a shift in some of the NRC data (not all). Apparently, this shift has to do with conversion between Geographic coordinates, latitude and longitude and Transverse ...
1
vote
2answers
309 views
CORS - HARN transformations - what is the most accurate method
This may not be an issue for many GIS-ers but has anyone else had experiences transforming from modern NAD83 (CORS) to HARN coordinates and vice versa? I realize the discrepancy might be something ...
