Tagged Questions
1
vote
1answer
60 views
British National Grid to KML results in offset polygons
I have a shape file of English wards from ONS.
It is similar to the files available here:
http://www.ons.gov.uk/ons/guide-method/geography/products/census/spatial/2011/index.html
except I had to ...
1
vote
2answers
52 views
How to convert OSM data to a projected Coordinate system
What is the easiest way to get OSM data into a shapefile projected data format for QGIS?
Sounds simple but I've run into problems with this before.
1
vote
1answer
88 views
How to reproject this vector layer?
I have a dxf file and use this tool to convert it to shapefile.
Then I apply some affine transformations and get a shapefile that does not fit the shapefiles downloaded from osm (EPSG:4326).
I know ...
2
votes
2answers
227 views
What can go wrong in UTM to WGS1984 conversion (shifted data)
I try to convert .shp files to OSM data with shp2osm and ogr2osm but the output data is shifted.
Semi-Cross-Posting Warning: I have already asked a questions on the OSM help site, but this questions ...
0
votes
2answers
793 views
1
vote
2answers
234 views
How to shift the Map a little bit?
I'm having trouble with two maps, both UTM33N/WGS84. They should be exactly on top of each other but there is a slight shift between them of probably a few hundred meters or so.
I Tried to adjust ...
1
vote
0answers
189 views
ogr2ogr failed to reproject shapefile error exceeds limits
I cannot get correct transformation from WGS84 to the Hungarian EOV EPSG:23700 (Hungarian Datum 72) using ogr2ogr.
I am using ogr2ogr from the fwtools shell. I have a shapefile in GCS WGS84 (epsg ...
1
vote
1answer
280 views
Looking for help identifying projections and reprojecting
Hi there at the new forum,
I'm still struggling with projections in qgis. The "Vogelschutzgebiete" reprojection worked. But these ones seem to be tougher:
...
0
votes
1answer
204 views
What is the correct projection to use with tm_wgs84_sans_antarctica.shp?
I am using tm_wgs84_sans_antarctica.shp with mapnik to generate tiles. I am using the tiles with Google Maps Javascript API V3. But the projection is way off. Here is roughly what my code looks like:
...
2
votes
0answers
349 views
How to overlay geographic data from multiple sources?
Being a newbie to GIS, I am trying to create a map using shapefiles and addresses found online, as an exercise. The steps are below:
I downloaded a shapefile of Connecticut from the following link ...
3
votes
1answer
781 views
C# Library for converting Shapefile Projection
Is there any C# library which can take a shapefile as an input with projection information defined (e.g, EPSG 3011) and return a new shapefile with user specified projection (e.g, EPSG 4326) ?
4
votes
2answers
276 views
How to register shapefiles to an image?
I'm generating images from various sources and the projections are not necessarily known ahead of time. The images are subject to interpolation and other alterations while being rendered, but I can ...
4
votes
2answers
2k views
what is the best way to programmatically convert between WKT and Proj4 string?
some shapefiles have a .prj file associated with it. and the .prj file contains the projection info of the shapefile in the format of WKT.
Sometimes I need to convert WKT to proj4 string, and ...
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 ...
