A group that maintains a freely available database with standard codes for coordinate systems, datums, spheroids, units and the like

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1answer
391 views

How to convert EPSG:2163 coordinates to wgs84 in javascript

I'm currently testing a web app that calculates EPSG:2163 coordinates based on user interaction with a map created through d3.js. I wish to convert these coordinates to WGS84 in order to use various ...
2
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1answer
437 views

What does 'projected bounds' and 'WGS84 bounds' mean in the definition of a CRS (on spatialreference.org)?

The site http://spatialreference.org gives 'Projected Bounds' and 'WGS84 Bounds' for each Coordinate System. What does these 'bounds' mean? e.g. for ETRS89 / UTM zone 32 N this is given: I know what ...
1
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2answers
208 views

Is it possible to change a Geotiffs CRS?

Hi I have created a Geotiff from the Bing Aerial photography. As it is automatically in WGS 84 it inserts perfectly into QGIS, however this image is of no use to me outside of QGIS. I need to ...
0
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1answer
209 views

GMT raster (*.tiff + *.pgw) in epsg4326 shifts few kms (4326-900913-3857 problem?) [duplicate]

This seems to be an old problem with an already known solution (ie. "...stop using 900913 and start using 3857..."), but not sure whether this problem is about software versions, the raster itself or ...
2
votes
1answer
195 views

Which BC Albers should I use and is there any difference?

I was about to calculate the area of some polygons and before I did I did some research. I found that the area of the polygon will be represented in the units of the projection used. So I did some ...
0
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1answer
508 views

Arcgis shape file and EPSG code

Why a shape file with CRS WGS_1984_UTM_Zone_22N en Arcgis has a differrent prj file than the EPSG:32622:WGS 84 / UTM zone 22N WKT ? Can I replace Arcgis .prj file with EPSG:32622 WKT ...
1
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2answers
419 views

ESRI State Plane Coordinates as EPSG

I am working with some State Plane projections from Colorado. I have looked them up on spatialreference.org and they are the following: ESRI:102254: NAD 1983 HARN StatePlane Colorado Central FIPS ...
0
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1answer
114 views

How to use bbox in long/lat with google/bing/etc… using mapserver‏

The bbox of OpenLayers.Control.GetFeature works in utm when the baselayer is 900913 ie. google/bing/etc) and in long/lat when the baselayer is 4326 (ie. my postgis layers served by mapserver), no ...
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1answer
540 views

PROJ4 Library error in combination with MapServer 6 and CentOS 6

I have recently compiled MapServer 6.2 on a CentOS 6.3 machine. Since I compiled it --with-proj=/usr, all the PROJ4 related stuff resides in /usr/share/proj. I've also installed proj4 with yum ...
2
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2answers
593 views

Why is Spatialite delivering “Invalid SRID” error message

Qspatialite in QGIS 1.8 (and also Spatialite-gui) delivers an "Invalid SRID" error message when I try to load shapefiles with a SRID value of 3814 (Mississippi Transverse Mercatur). The SRID is ...
4
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1answer
757 views

how to add a custom SRID to Spatialite

I'd like to create a spatialite database and load it with shapefiles using the Mississippi Transverse Mercator (MSTM) projection, but it doesn't have an EPSG definition in the spatialite library of ...
2
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1answer
408 views

Requesting map tiles from a wms server in epsg:900913 fails

I'm trying to figure out how to query a WMS server by using latitude/longitude coordinates. The reason is I'm trying to create an iPhone application and overlay custom tiles with data from the WMS ...
2
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1answer
248 views

How to convert NAV4 coordinate system to WGS84?

I would like to know whether it is possible to convert the coordinates given in a NAV4 coordinates system into WGS84. I could not find out what NAV4 is and if it is actually a standardized CRS. Here ...
11
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2answers
7k views

What is the difference between EPSG:900913 and EPSG:3857?

I'm using the QGIS google layers plugin to digitize a parcel as a shapefile. Later I want to import it to PostGIS. I know that google maps use a special 'google mercator' projection. What is the ...
3
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1answer
499 views

How to convert a geotiff from WGS84 to 3857 with gdalwarp?

I'm trying to convert images with WGS84 projection to 3857 but warp is not giving me a output I would expect. This is my command: gdalwarp -s_srs "+proj=merc +datum=WGS84" -t_srs "EPSG:3857" ...
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2answers
472 views

Proper gdaltrasform syntax to transform a list of coordinates?

this is probably a very simple question, but I'm very new to GIS so I just need one last nudge. I've got a sense of the Linux utility gdaltransform and I am feeding it coordinate pairs in ...
2
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1answer
365 views

How do I convert EPSG:26986 coordinate pairs to EPSG:4326 from the MassGIS web service, the Linux command-line, or PHP?

I'm a GIS newbie, normally a PHP web applications developer. I am trying to map all boundaries of the MA state representative districts. So I just need to convert polygon coordinates from the ...
18
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2answers
14k views

What's the difference between EPSG:4326 and EPSG:900913?

I am a bit confused on EPSG:4326 and EPSG:900913. I thought that they were both same. Though as I am placing my features over GMaps, which is EPSG:4326, I need to define the srsname of the WFS layer ...
0
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0answers
27 views

Convert Lambert png images to Mercator projection [duplicate]

Possible Duplicate: How should I use GDAL to perform a transformation? Is there any way of converting the output .png images of a WRF system which are in Lambert projection to Mercator? I ...
1
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1answer
369 views

Error occured decoding the epsg code - 3857 (Web Mercator) [closed]

I'm trying to add the following wms service to QGIS using EPSG:3857 and get the following error: Service (running on L/A/P/P geoserver): http://66.228.57.208/geoserver/wms?tiled=true or non-cached ...
3
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1answer
220 views

Is there no EPSG code to use for Behrmann equal-area projection in ogr2ogr?

I'm trying to use ogr2ogr to reproject some shapefiles. The projection I wish to use is Behrmann equal-area. I cannot find an EPSG code to use for the '-t_srs' part of the syntax. Is there any way ...
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2answers
1k views

How can I convert geomagnetic coordinates to geographic coordinates without doing the math myself?

I have some data which are in geomagnetic coordinates; that is, they are latitude and longitude, but in reference to the magnetic north pole in Canada rather than the geographic north pole. As you ...
2
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1answer
416 views

How to add EPSG:5235 to QGIS?

First of all I should say I am new to EPSG and QGIS world.Then I want to Georeferced Raster image to EPSG:5235 in QGIS. But in Qgis I can't found above EPSG. How I add this EPSG to Qgis ? Pls help ...
2
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2answers
6k views

convert wgs84 coordinate to Google Map coordinate system(EPSG 3785) with geotools and java

Could you please point me out where can I make such a transformation: convert wgs84(EPSG 4326) coordinate to Google Map coordinate system(EPSG 3785), and vise versa. Thank you.
3
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2answers
545 views

Error transforming EPSG:4326 to EPSG:90013

When I'm trying to run a map on geomajas an error has occurred: o.g.internal.service.GeoServiceImpl - Problem during transformation EPSG:4326->EPSG:900913 of MULTIPOLYGON The multipolygon ...
4
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1answer
2k views

Distances in {Plate Carrée projection - EPSG:4326 - WGS84}

So, "4326 is just the EPSG identifier of WGS84" [3], indeed http://spatialreference.org/ref/epsg/4326/html/ says it is a GEOGraphic Coordinate System: GEOGCS["WGS 84", DATUM["WGS_1984", ...
2
votes
1answer
153 views

Is there an arcpy boolean check for whether an EPSG or prj is supported by arcmap?

I'm writing a tool and essentially I found out that arcmap defaults an epsg to 0 if it sees that the projection is not supported against the predefined projections.
4
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1answer
409 views

EPSG operations and operation methods

Querying through the EPSG database, I can see the tables epsg_coordoperation where transforms and conversions between different CRS are stored, and epsg_coordoperationmethod which stores the ...
3
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2answers
388 views

How to make QGIS recognize EPSG:31468?

I have Shapefiles without a CRS (e.g. without .prj file). I would like to set the CRS (EPSG:31468) before I pass the Shapefiles. I tried the following: Setting a .prj file manually with the string ...
1
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1answer
477 views

how to set WMS reprojection config in mapserver if I creating virtual map (e.g. star map)

all, I want to use openlayers with mapserver to create map of stars. but I dont know how to setting up the WMS config in mapserver , especially the EPSG re-projection things. In fact, I didnt ...
3
votes
2answers
256 views

How do I automatically export a release of the EPSG registry?

I am trying to use the EPSG Registry API to export a release of the registry for offline use but am receiving a registry error. After following the Developer Guide I am HTTP POSTing the following XML ...
0
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1answer
336 views

Generate a random 100x100 m bounding box in any projection in pure Python?

I'm given: Extend of WMS Layer SRS Now I want to, in standard 2.6 Python (no OGR or C lib dependencies), to generate a 100x100m random bounding box within that extent (assuming it is more than ...
1
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1answer
2k views

Adding EPSG:3857 / 900913 to Oracle's mdsys.cs_srs

I am working with an Oracle Standard database at version 11.2.0.1.0. I also have access to XE version 11.2.0.2.0. The later version has both SRIDs 900913 (Google Mercator) and 3857 (official Web ...
2
votes
4answers
2k views

OpenLayers transform EPSG 27700 coordinate to Google 900913

Community, I'm currelty capturing my mouse click event and trying to transform the coordinates into Long Lat. I need to get at the Long Lat as strings so I can build a url and throw it at Google ...
14
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3answers
2k views

Do ArcGIS SpatialReference object factory codes correspond with EPSG numbers?

I've got a project where I'm reading in geometry objects from text files to put them in ArcSDE. These geometry objects have an associated EPSG code, and I'm looking for a way to ensure they're in the ...
5
votes
1answer
223 views

How to fix distortions in rendered OpenStreetMap maps?

I use OpenStreetMap in order to generate maps and add some cool stuff in it. Actually I have good results but I seem to have a problem with reporting a good image ratio when I create my generated ...
1
vote
1answer
141 views

Get relative north aligned point 2163 (US Equal Area)

What I'm trying to do is create a grid where the y axis is north aligned. I have a origin Lat/Lon point which is the bottom left corner of the grid and each cell should be 100 by 100 meters. So I ...
2
votes
1answer
889 views

Geowebcache does not displaying map tiles in EPSG:900913 from a remote WMS server

I connect Geowebcache to a remote WMS service through their Getcapability request by adding the url in geowebcache-servlet.xml document. Geowebcache demo page displays the list of wms layers from ...
7
votes
2answers
584 views

Is there a standard vertical datum for meters below the WGS84 ellipsoid, or below MSL?

I have data I am publishing a WMS layer representing data under the surface of the water, say temperature at 100m depth. What is the accepted way to represent this in WMS GetCapabilities document? ...
25
votes
3answers
21k views

What is the difference between WGS84 and EPSG4326?

What is the difference between WGS 84 and EPSG 4326? It seems like for a given dataset it might be both WGS 84 and EPSG 4326.
1
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1answer
492 views

GeoNetwork 2.6 and Geoserver CRS codes

I am a relatively new convert to the GeoNetwork (on 2.6) and presently setting up a server in the UK but have been having issues with the crs code used in , I think this is where I need to make the ...
12
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3answers
7k views

How to georeference a web mercator tile correctly using gdal?

As an example I will take the following tile http://a.tile.openstreetmap.org/3/4/2.png and save it as "4_2.png". The WGS84 coordinates of this tile can be calculated or read there by clicking the ...
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2answers
650 views

Projected layer misaligned with Mapserver

I have a couple or raster files in epsg:23031 reference that i want to reproject to other reference systems (epsg:4326 and google projection) using the 'on the fly reprojection' of Mapserver. No ...
36
votes
3answers
12k views

What is the current Web Mercator projection code?

The web mercator projection, popularised by Google Maps, seems to be given a new EPSG code every couple of years. EPSG:900913 (Google in calculator text) was an unofficial code EPSG:3785 - is the ...