The process of translating a map or spatial data from one geographic projection to another

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2
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4answers
959 views

How do I request an output from a WMS service in a non-standard projection?

I want to use a map service which is available in WMS format. The server is Mapserver, and the spatialreference of the map service is 4326. I wish to use it in a slippy map (web based Javascript ...
4
votes
3answers
4k views

How to convert the file with projections in meters to Lat-Long in QGIS ar Erdas Imagine?

I have file in Lambert Conformal conic format for the data of Australia, Its coordinates are in meters. I want to convert it to Latitude-Longitude format. Which Projection, Spheroid and Datum I should ...
1
vote
1answer
228 views

How do I reproject a arbitrary coordinate system grid to OSGB

I have a polygon grid of a certain shape that has some data associated with it. Unfortunately its not properly projected, being in what seems to be an arbitrary scale and coordinate system (it was ...
2
votes
1answer
1k views

Defining datum for Lambert Azimuthal Equal Area and converting to geographic coordinates

I posted this question to a specialised mailing list for spatial data analysis using R here but didn't recieve a response. I am working with shapefiles and rasters in R, and I am unsure if I am ...
5
votes
1answer
646 views

Custom Geographic Transformation on QGIS

Is there a way to create a custom geographic transformation with specifics parameters in QGIS like in ArcGIS? Okay, I want to tranform SAD69 system into WGS84. Well, I'm in doubt because in ArcGIS ...
3
votes
0answers
66 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, ...
1
vote
1answer
1k views

GeoToolKit conversion from lat/long to UTM

What is the proper way to convert lat/longs to a UTM coordinate system using the Java geotoolkit API? I have not worked with GIS software before, so maybe what I am trying to do is not directly ...
1
vote
1answer
2k views

How to reproject vector datasets in ArcMap?

I want to change one Personal Geo-database projection to another. Kindly give me instructions to re-project vector data.
2
votes
1answer
2k views

Convert area from square meters to degrees globally

I have a global raster file with 3600x1800 pixels. I don't have any information about the projection used. The raster contains one band with a quantity with the unit "per square meter". How can I ...
3
votes
0answers
413 views

How do I pass a LatLng Bounds from Leaflet to Mapfish Print?

I successfully fired up a MapFish print server on Elastic Beanstalk, and it prints out the sample spec files fine, but I'm trying to pass bounds from my Leaflet frontend now, and encountering a lot of ...
1
vote
2answers
422 views

Geodjango - using projected coordinates with olwidget

I have a database in GeoDjango containing data based on the Australian MGA54 coordinate system (SRID 28354). I have the srid set in the model definintions and when using the standard GeoModelAdmin ...
1
vote
1answer
205 views

Looking for CRS for NAD 83 UTM Zone 30N

I'm curious as to why the UTM zones are incomplete for NAD 83 in QGIS? I have a WGS84 shapefile that I would like to project to NAD83 UTM Zone 30N but can't find it in the QGIS CRS list. I see how ...
8
votes
1answer
308 views

Reprojection - Learning the ins and outs

I would like to expand my knowledge coordinate systems, projections and reprojecting data, with a view of writing a reprojection engine. Could you provide me with some resources (books, websites, ...
0
votes
1answer
2k views

Conversion from N,E to Lat/Long And Lat/Long to N,E will always be same? [closed]

I have an excel tool for the conversion of following lat/long: Lat: 23° 11’ 24.67503’’ S Long: 118° 46’ 6.15742’’ E , which gives me following N,E: Northing: 7,434,317.43 Easting: 680,991.69 But I ...
1
vote
0answers
199 views

On the usage of Proj4Js->tmerc.js

I am using "proj4js & open layers" for my mapping. I got projection & datum (which is based on "Transverse Mercator") of a local plane and this plane is part of a grid which returns ...
0
votes
1answer
305 views

reprojection errors with google maps?

Ever since google maps came out, the standard for web maps has been in their “flawed” web Mercator projection. I am trying to figure out why this projection is not good from a geospatial analysis ...
5
votes
1answer
1k views

Reproject script in Python with GDAL

I'm having a lot of trouble with GDAL. Besides just the at times lacking documentation, there seems to be little support in Python. Anyways this is just a batch reproject script that goes thusly: ...
0
votes
2answers
192 views

How do you pass parameters for Proj4js implementation with OpenLayers

I am using Proj4js along with OpenLayers for the transformation of x,y (projection type is Transverse Mercator) to long, lat. While executing "inverse()" method what I noticed that in tmerc.js some ...
1
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1answer
143 views

Tool For Generating Formula for Projection

I am using Proj4Js for northing,easting to lat,long transformation. My Datum is "AGD84" and projection is "Transverse Mercator". While doing so I found that if I don't specify "+proj" parameter in ...
2
votes
1answer
295 views

Proj4 Task not working - Northing Easting to Lat Lng

I usually post in StackOverFlow - if this is the incorrect area to post - I apologise. I have trying to convert a lot of northings / eastings to lat lng I have code below working: In ruby using ...
1
vote
1answer
189 views

QGIS - WGS84 to BC Albers reprojection no curved lines, any idea why? How to snap a line to a point?

I am trying to learn a bit about QGIS. So I thought I would drop in some layers of my Province and then recreate some points representing the BC Albers Central Meridian, and the two standard ...
2
votes
1answer
1k views

Projection ETRS89 (Ellipsoid: GRS80) 6-Degree Zone 33 to UTM33N - WGS84

Hi I'm having trouble to reproject a shape file in Qgis. The projection is supposed to be "ETRS89 (Ellipsoid: GRS80) 6-Degree Zone 33" and I would like to project it to UTM33N - WGS84 (EPSG 32633). ...
1
vote
1answer
133 views

Projection - once again

I have a shape file with nature preservation areas (Biosphärenreservate) in Germany. I think the projection must be something like gauss-krüger zone 4 Pulkovo or something like that. When I reproject ...
5
votes
1answer
2k views

MGRS in OpenLayers

I am trying to view the Military Grid Reference System coordinates in Openlayers through the MousePosition control. Is there an easy way to accomplish this just through Javascript? I am looking at the ...
1
vote
1answer
1k views

ArcGIS javascript api: Convert a map service with projected coords to web mercator

here I see a question about tiled map services. But what about dealing with an arcgis server map service in a projected coordinate system like say 2278, how would I convert this to web mercator so ...
2
votes
2answers
382 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
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0answers
387 views

Conversion From Transverse Mercator To Longitude & Lattitude

I have to transform (7-parameters datum transformation) coordinates from northings & eastings to lattitude & longitude. Following are details of source coordinate system(i.e. northings & ...
2
votes
0answers
1k views

OSGB36 to WGS84 reprojection 'error'

First off, I am a recent convert to QGIS and am greatly impressed with its ease of use and speed compared with the ESRI products with which I am more familiar - my congratulations and thanks to its ...
1
vote
1answer
590 views

Reprojecting a shape to UTM33

I still have trouble reprojecting shape files :( I would like to reproject it to UTM33N / WGS84 (EPSG 32633) I think the projection of the shape might be Pulkovo 1984/ Gauss-Krüger Zone 4 (EPSG ...
1
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0answers
398 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 ...
2
votes
1answer
365 views

Reprojecting sources with MapProxy yields distortion

I have configured MapProxy to aggregate imagery from a number of Internet sources so that I can dynamically overlay them by adjusting the layers=<x> query that I pass to MapProxy's WMS service. ...
2
votes
1answer
324 views

Geoserver proxying custom tiles through a WMS

I have a set of tiles that I was given via disk (So no way to recreate them, they are already generated/cached). There is a clear pattern/style to the naming of the tiles (zoomLevel-x-y.gif). The ...
2
votes
2answers
15k views

How to convert coordinates from meters to decimal degrees?

I have a shape file. The coordinates (Lat/Long) are projected as meter (555000, 155000). But, I want to re-project it to decimal degrees(51.523666, -0.07467). How can I do it with ArcMap or Quantum ...
2
votes
1answer
150 views

Any reason NOT to convert to a single projection when loading GIS data?

I have been given the task of: Loading a list of properties with lat/long coordinates into a SQL Server 2008 database. Loading points and areas (polygons) of interest from a variety of shapefiles ...
2
votes
1answer
268 views

Why are layers not lining up with others with the same CRS? [closed]

I am creating a project on the UK and have downloaded various shapefiles. When I add a vector layer they are coming up as if they are not lining up. Some layers are nicely on top of each other with ...
2
votes
1answer
217 views

World map picture to globe

i have 26 pictures of the globe and i want to bound them. How can i proceed to abtain a flatworld map? it looks circa like this but in 26 pieces. map Can somebody help me?
2
votes
1answer
211 views

Converting 2D shapefile to Equal Area Projection?

I have thousands of shapefiles with coordinates in lat/long (-180 to +180 x, -90 to +90 y), that contain polygons of which I wish to calculate the area. I'm using the Python GEOS/OGR/GDAL API. If I ...
1
vote
0answers
377 views

How do I use Proj4js or other technique to make custom map projections with google.maps.Projection?

I'm using Google's Projection class to try to convert my map projection from the default spherical mercator to something like Lambert Conformal Conic. I was previously adapting the code from this ...
2
votes
2answers
588 views

How to convert Garmin Waypoints to Google Mercator?

I have georef some topocards with QGIS and the Google Hybrid Layer. So, this cards are connected with the Google Mercator System. Now I have some waypoints taken with Garmin GPSmap62 (in WGS84). ...
2
votes
2answers
6k views

How to create custom coordinate system in ArcGIS Desktop?

I have a series of control points with xy coordinates in both NAD83 UTM and in a local grid. How can I go about creating a new projection file in ArcGIS 10 for the local grid?
1
vote
2answers
1k views

How to project TIGER & WGS84 to Spherical Mercator?

So I've been banging my head on this for about a week now. I'm using QGIS on a Mac. I have various shapefiles in WGS84 and Census TIGER NAD83 (EPSG:4269) and I would like to give them the same ...
0
votes
1answer
489 views

how to reproject data in EPSG:4326 to 3857 using SharpMapv0.9 for display on google maps

I have data stored in SQL Server 2012 in EPSG:4326. I need to display this data on a google map in 3857. but without an ST_Transform function, I cannot determine how to convert my data on the fly to ...
3
votes
1answer
2k views

How to perform datum transformation in ArcGIS server REST API exportmap

I have a ArcGIS server 10.0 mapcontext in one projection (swedish grid sweref99 TM) which uses its own datum, also named Sweref99 . When I use the REST API's map service export function I want to ...
1
vote
1answer
328 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: ...
4
votes
2answers
318 views

How to Intersect a layer with custom CRS with NED data?

I am trying to create a map with a layer of county tax assessor property parcels plus NED elevation data. The projection of the tax assessor layer is a weirdo -- looks like user-created by the ...
0
votes
1answer
286 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: ...
3
votes
1answer
410 views

How would I go about re-projecting the Blue Marble raster maps into a robinson projection using free tools?

I would like to convert the NASA Blue Marble maps into a robinson projection.
0
votes
1answer
759 views

Re-projection in Geoserver

I have published a layer on Geoserver by cascading a remote WMS. i have successfully got all the layers from remote wms and publish one of those layers. But I want to re-project the layer from its ...
1
vote
2answers
351 views

Geowebcache re-projection

I have one layer (raster geotiff image) published in geoserver with EPSG: 3011 projection. But I want this layer in EPSG 4326 projection for use it in google API web application. I have searched on ...
1
vote
0answers
842 views

Converting Lon Lat to UTM Zone 32N in C# with SQLSpatialTools

I have a set of coordinates; Lon 9.42221521, Lat 56.44978001 and I want to convert them to UTM Zone 32N coordinates. I found the SQLSpatialTools library to do the conversion but I need some help. When ...