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

learn more… | top users | synonyms (2)

1
vote
1answer
94 views

Setting coordinate systems in gvSIG: workflow or transformation issues

I am learning how to use gvSIG 1.10 (Mac OS 10.6.8 Snow Leopard). My goal is to create a simple county map of Illinois using the base data shapefiles available from the Illinois Natural Resources ...
1
vote
2answers
1k views

How to convert a Shapefile from bessel1841 to WGS84?

I would like to convert a shape file which has +ellps=bessel to +ellps=WGS. In my understanding, even QGIS1.8.0, it is impossible. Let me know the free software which is able to convert shape file ...
1
vote
2answers
154 views

How can I find an OSGB six-digit code's bounding box?

How can I convert Ordnance Survey six-digit codes to the latlng bounding box of the related 1km grid square? For example, NH0325: according to Wikipedia this means a 1km square whose south-west ...
1
vote
0answers
602 views

How to reproject a raster in QGIS? [closed]

I wanted to reproject raster file from UTM to decimal degree in QGIS version 1.7.1 or 1.8.0.. I could reproject one raster file before in QGIS Version 1.8.0. I have tried again, but now we cannot ...
1
vote
3answers
3k views

How to convert projection

I got sample shape files with the following *prj file content: ...
1
vote
0answers
363 views

Getting Latitude & longitude of a Mollweide projection

I am very new to geotools and map-projections and after researching a hole day I still don't know where to start. I have a map with a size of X,Y Pixels and it is in Mollweide projection. How can I ...
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 ...
1
vote
2answers
4k views

Converting from British National Grid (27700) to WGS84 (4326) to Web Mercator (102100)

I'm developing a web application that uses ArcGIS to display a map using JavaScript. We are holding all our data in MS SQL Server 2008 as Easting/Northing against the British National Grid. ...
1
vote
1answer
151 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 ...
1
vote
2answers
710 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 ...
0
votes
1answer
167 views

Gdal: How to reproject from equirectangular to mercator?

I work with raster ETOPO1, made a crop of my area of interest. curl -L -C - ...
0
votes
1answer
245 views

Coordinate extraction in a different projection in MapInfo

I have a .TAB file of polyline objects in British Grid Coordinate. I need to extract the end points/nodes of each polyline and find their latitude/longitude (WGS84). Would really appreciate some ...
0
votes
1answer
451 views

Reproject WKT Polygon with Javascript

I have a polygon in WKT in EPSG:4326: polygonWKT = 'POLYGON((13.215179443359373 52.588032137196755,13.42803955078125 52.592620721000365,13.454132080078125 52.46897854656702,13.347015380859375 ...
0
votes
1answer
194 views

Is there any tool to reproject x,y coordinates, apart from Proj4?

I have a JEE project (Java, JBoss) and I'm looking for a library that allows x,y coordinates reprojection. I know about Proj4. Do you have any other option? Is it possible to find on the net a ...
0
votes
1answer
449 views

Why are map tiles being repeated? Using MapServer and Openlayers

Problem I have: map tiles from my layer are being repeated. Shapefile is projection 3059. I have specified 3059 is in the mapfile and also when creating map object. I know OpenLayers.Layer.WMS is ...
0
votes
1answer
60 views

Projection system differs

There is a problem . I want to define projection for a Shape file. The projection system is: "NAD_1983_StatePlane_Montana_FIPS_2500" which is refered in Qgis 1.9 as EPSG:102700 .The same projection ...
0
votes
2answers
7k views

How to convert lat long to meters using Mercator projection in C#

I have set of lat long values and I want their equivalent in meters using Mercator projection in C#. Can you please post some sample code or api example of some library that does exactly this?