Tagged Questions
1
vote
1answer
53 views
PROJ4 C++ API: Amersfoort RD New to WGS84
I try to convert between dutch RD New (EPSG:28992) and WGS84 (EPSG:4326) via PROJ4 C++ API.
On the console this works with:
cs2cs +proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889 ...
5
votes
1answer
162 views
Does anyone know the proj4 Coordinte Reference System command line for Rectangular Polyconic Gores?
I am a GIS beginner using QGIS 1.8.0
I am trying to transform a world map from the standard WGS84 Coordinate Projection System to a set of rectangular polyconic gores, with a gore count of 12.
...
0
votes
1answer
87 views
Geostationary satellite projection to be introduced in GDAL
I'm working on raster files and their spatial reference system is:
PROJCS["Geostationary_Satellite",
GEOGCS["GCS_Unknown datum based upon the custom ellipsoid",
DATUM["D_Not specified ...
4
votes
1answer
83 views
Problem with custom projection definition in Qgis
I want to define a custom crs valid for Mexico. The context is that older cartography in Mexico is based on the NAD27 datum. I wanted to test the following proj4 string
+proj=longlat +ellps=clrk66 ...
0
votes
0answers
64 views
How do I determine programmatically what values to add to the proj4js constructor for a CRS or SRS such that I can iteratively render proper overlays
I think this is primarily a GIS based question as far as for example:
var crs = L.CRS.proj4js('EPSG:2154',
'+proj=lcc +lat_1=49 +lat_2=44 +lat_0=46.5 +lon_0=3 +x_0=700000 ...
3
votes
0answers
50 views
How can I specify a spatial reference system which has a north pole different than the standard north pole?
I have a geographic spatial reference system (i.e., latitude and longitude) which has a north pole that is not the usual north pole: it's the magnetic north pole at approximately 70.30 degrees north, ...
3
votes
3answers
709 views
How to define ITRF 92 and ITRF 2008 using Proj4 parameters in QGIS?
I know how to define a CRS, but this particular one is giving me a headache. I was unable to find the EPSG code at spatial reference.
The main reason for asking this is that raster and vector data ...
1
vote
1answer
459 views
Generating Map Tiles for MGRS Grid Graticule
I'm possibly a bit out of my league here, but ready to get my hands dirty. I want to generate map tiles for a MGRS grid graticule similar to http://tiles.mapbox.com/mapbox/map/afghanistan-mgrs.
I ...
1
vote
1answer
74 views
Which SRS is computational more effective to store continental scale data? (given some conditions)
For a Precision Agriculture application I need to make calculations in UTM projection. The data will be stored in Postgis and is made of soil samples results (point data) and field boundaries of many ...
4
votes
1answer
298 views
How to define a CRS using a projection rotated about a given point
I have a data set that uses a common projection, but has its own false easting and northing, and is rotated 315 degrees. I need to be able to work in this CRS and easily translate from one CRS to ...
