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

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2
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1answer
353 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 ...
3
votes
2answers
22k 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
162 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
336 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
225 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
264 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
514 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
619 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
9k 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
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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
2answers
633 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
334 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: www.projektidee.org/images/extern/Gemeinden....
4
votes
2answers
401 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
332 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
508 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
1k 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
403 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 ...
2
votes
0answers
1k 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 ...
1
vote
1answer
669 views

Can we use proj to offset coordinates?

Can someone please help me construct a proj string to offset coordinates? The detail we have - one coordinate point in a local construction grid, and the corresponding WGS1984 LatLong which we ...
2
votes
0answers
570 views

How to overlay geographic data from multiple sources?

Being a newbie to GIS, I am trying to create a map using shapefiles and addresses found online, as an exercise. The steps are below: I downloaded a shapefile of Connecticut from the following link (...
2
votes
1answer
1k views

How to unproject coordinates on a Google map with Openlayers?

Below is my code and a pic. When I finish making my circle on a Google map with Openlayers, I get the following coordinates but I want coordinates like E.G: bottom: -27.762124575762 left: 25....
1
vote
1answer
4k 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 ...
37
votes
3answers
42k views

Layers with same coordinate system should align/overlap but do not?

I put 4 different layers into my ArcMap document, but only one of them will show up on the map! I should be seeing the other 3 layers as well. When I do a Zoom to layer, I can see one layer, but I ...
2
votes
4answers
3k 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 ...
1
vote
2answers
5k 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. ...
3
votes
2answers
4k views

Converting NZMG (or NZTM) to latitude / longitude for use with R map library

I am a statistician with no background in GIS so apologies for the newbie question. We routinely use R for a range of statistical and graphic analysis and are interested in using its map library to ...
28
votes
1answer
3k views

Coordinate system for calculating areas of polygons accurately?

I have multiple polygons, all located offshore around the UK. I am trying to calculate the areas of these polygons in square kilometres, without splitting them by UTM zone. Is it possible to do this ...
3
votes
2answers
212 views

Equally sized countries?

Is there a map projection (or a more appropriate term) which allows you to see every country as an equally sized land area, but positioned approximately in the correct geographic position? Water ...
3
votes
1answer
1k views

C# Library for converting Shapefile Projection

Is there any C# library which can take a shapefile as an input with projection information defined (e.g, EPSG 3011) and return a new shapefile with user specified projection (e.g, EPSG 4326) ?
3
votes
1answer
3k views

How to write a script that re-projects vector datasets in a folder?

This is probably a novice question, but I am a novice with python. I am trying to write a script that re-projects vector datasets in a folder. However there are rules in which to do this. They are: ...
6
votes
3answers
3k views

How can I find out how to convert this point to lat lon?

I have received a shapefile with measurement points to be analyzed, but no matter how I try, I can't find how to convert to lat lon. I suppose it would be good to know the projection but when I look ...
3
votes
0answers
231 views

reproject wms in geoserver [duplicate]

Possible Duplicate: Re-projection in Geoserver I've got a WMS service that publishes in WGS84 (EPSG:4326). I have several AutoDesk users that need to use the imagery in NAD83 (EPSG:2227). I ...
3
votes
4answers
4k views

WFS getfeature request with diffent SRS

I'm having problems with a WFS getFeature request. I'm using openlayers with an OSM map as baselayers which use the google projection. Overlaying the layer with WMS works perfect. When I do a request ...
2
votes
1answer
1k views

Quantum GIS Reproject a projected coordinate system with rotation

I have two shapefiles:- one in WGS84 Z30S and one in a custom, system based, projection. I need to convert the custom projection into WGS84 Z30S. I have a set of parameters including a shift in X and ...
4
votes
1answer
1k views

What is wrong with this Proj4 transformation?

I'm implementing support for WMS maps in my company's software. Servers return a list of projections their maps are available in, but our software only displays data in WGS84 (lat/lon or UTM), and ...
-1
votes
2answers
1k views

Projecting data from WGS84 to NAD27 UTM BLM Foot ArcMap

When I use the NAD27 BLM 15N prj from the projected>>UTM>>north america>> in ArcMap 10.0 and go from WGS84 to that..using the NAD_27_To_WGS_84_1 transformation..my resulting shapefile doesn't line up ...
1
vote
1answer
216 views

Modifying a projection ArcMap 10.0 Arcpy

I have the need to project data from wgs84 to UTM 15N NAD1927 FOOT_US. I would like to have arcpy do this for me. I can project the data using one of ArcMaps predifined prj files in the Coordinates ...
6
votes
5answers
3k views

Can I copy an entire geodatabase with relationship classes and domains and reproject all feature classes from wgs84 to state plane?

I have an SDE geodatabase with several feature classes, tables, relationship classes, and domains. All the feature classes are currently in WGS84 coordinate system. I need an exact copy of the ...
3
votes
2answers
10k views

OpenLayers LatLon conversion

I have an OpenLayers map with a settings like a below. All LatLon points are represented like a POINT(3684182 5207957). In a more usual form (for me) it looks like a (104.287422, 52.284126). How can I ...
8
votes
1answer
313 views

Looking for US National Grid to Lon/Lat Converter in Python, C, or C++

I see here that there is Fortran source code for going from USNG to lon/lat: http://www.ngs.noaa.gov/PC_PROD/USNG/ Is there some python or C/C++ code that does the same? My understanding that this ...
19
votes
5answers
14k views

Map projection in OpenLayers

I want to overlay some data whose projection is WGS-84 on Google map layer in OpenLayers. But I just can't make them in the right place. I did as follows: map = new OpenLayers.Map('map', { ...
4
votes
2answers
476 views

Reproject TM65 to OSGB in ArcGIS

I have a TIFF file in the TM65 (Transverse Mercator) projection, and want to convert it to the OSGB (British National Grid) projection. I'm trying to do this in ArcGIS using the Project Raster tool. ...
4
votes
2answers
387 views

How to register shapefiles to an image?

I'm generating images from various sources and the projections are not necessarily known ahead of time. The images are subject to interpolation and other alterations while being rendered, but I can ...
1
vote
0answers
159 views

Proj4js can't handle 90/180degree transformations from 4326

So if you try to do a transform like this Proj4js.transform( new Proj4js.Proj( 'EPSG:4326' ), new Proj4js.Proj( 'EPSG:3857' ), new Proj4js.Point( -180, -90 ) );...
53
votes
8answers
2k views

One dimensional map of the world?

Bit of a strange question but hope this is OK to ask here. Has anyone heard of a '1-dimensional' projection of the world map - that is mapping all the points on the globe to a single line? I was ...
5
votes
3answers
12k views

How to convert MGRS to Lat/Long or UTM?

Can anyone please guide me on converting Military Grid Reference System (MGRS) to lat/long or UTM.
1
vote
2answers
9k 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?