The process of converting the coordinates of a map or an image from one system to another, typically by shifting, rotating, scaling, skewing, or projecting them.
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50 views
“Request contains a format not offered by the server.” Error when using CRS transformation with WMS in QGIS
When I try to load a WMS layer which has a WSG84 as a default projection and use a CRS transformation on it, it gives this error message:
Request contains a format not offered by the server.
The WMS ...
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30 views
Total station problem [duplicate]
I have total station data in local coordinates in excel format. Now i want to transform it into global coordinate (in utm) to correctly overlay on the actual place. What is the method?
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votes
1answer
32 views
ArcGIS JS API Polygon's WKID conversion with gsvc.project
I'm trying to convert polygon from wkid 3301 to wkid 4326. I've been using this code snippet for converting points, but I'm not sure how I would accomplish this to create a polygon object. I'm not ...
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0answers
31 views
Geokettle transformation for FileGDB to SHP
I want to transform FileGDB layer to Shapefile on Geokettle. Firstly i added OGR Input and than i added a Shapefile Output. And i entered parameters shown on the screenshot but i got errors for ...
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1answer
36 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 ...
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2answers
42 views
Performance loss for OpenLayers EPSG transformation? Storing GeoJSON coordinates in lat/lon or in native map projection?
For a project the map projection is EPSG:32468 (tiles). On top of the map, two or three GeoJSON LineStrings should be displayed using OpenLayers. Each LineString has about 1500 coordinates.
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0answers
17 views
How to identify grid shift file used by osgeo in Python?
I wrote a Python script reprojecting points from a source coordinate reference system (SCRS) to a target one (TCRS) both identified by an EPSG code.
I would like my python script to retrieve details ...
2
votes
1answer
35 views
Transformation of user-defined projected coordinatesystems
I want to transform from one projected coordinate system (pcs) to another using ArcGIS 10. Unfortunatelly the starting system is not predefind by ESRI and thus I´m not sure the software is doing what ...
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241 views
How do I perform a 3 parameter geotransformation and projection in Sql Server 2012?
I have a table with latitude longitude (NAD27) columns in it. I compute two other columns, X and Y, representing Web Mercator (WGS84) location.
Currently I'm using a Arcmap to do this, by applying ...
2
votes
2answers
55 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 ...
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12 views
Units of Geometry & Geography data type [duplicate]
When you store data using the Geography data type (like in PostGIS), is it always in lon/lat in degree decimals?
For the Geometry data type, what are the units used in the coordinate pairs? Can it ...
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41 views
OpenLayers - Transform resolution
I want display resolution of the map for each zoom level. So I've create event listener for zoom event, but it is displayed in different projection that I want (I guess). So I need to transform this ...
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vote
1answer
46 views
Lambert projection with one or two standard parallels and proj4
I'm sure there is a gap in my understanding, but I haven't been able to identify where it is, nor how to fill it. My issue is this:
I'm transforming lon lat coordinates into a lambert conformal ...
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0answers
21 views
Can QGIS transform a set of XY coordinates to a new set reconciled to UTM coordinates?
I have a large data set of coordinates (in meters) measured on the ground relative to a set of trails in Peru. These were generated in the 1990s with a tape measure, and there are about 3000 of them. ...
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1answer
62 views
Projection WGS 84 is slightly displaced referring to a hillshade in QGIS
I have a hillshade and a vector layer. The vector layer is slightly displaced referring the hillshade. About lat=100m and long=175m
The CRS of the project is EPSG:3397 - PD/83 / Gauss-Kruger zone 4.
...
