The process of translating a map or spatial data from one geographic projection to another
0
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0answers
61 views
MapInfo - WFS service with multiple SRS codes?
I've posted to the mapinfo forum (https://groups.google.com/forum/?fromgroups=#!topic/mapinfo-l/HfA2zna9Rao) but hoping for better response here.
Will someone share an example configuration or ...
3
votes
1answer
250 views
Overlaying layers with different projections on Android
Hello, I'm trying to show a map on Android. I'm using two map providers and am having trouble when converting geo point(lat/lon) to point in my viewport(x/y in pixels).
1) the first map provider used ...
1
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0answers
164 views
Possible to do a datum shift using dotSpatial?
I was hoping to be able to use Reproject.ReprojectPoints to achieve a datum shift between lat/lon values in NAD27 and NAD83. I'm able to correctly reproject from NAD27 lat/lon to NAD27 UTM and from ...
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2answers
796 views
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1answer
632 views
Mapping x, y pixel coordinates to latitude and longitudes on the WGS84 datum
Apologies in advance for the long question, I am fairly confused at this point and I figure if I show my thought process any flaws early on in the piece can be more easily pointed out.
I have a grid ...
0
votes
1answer
48 views
How to reproject an EVF?
I have an .evf file and it is not opening in QGIS.
How can we reproject the vector layer (specifically if we want to convert it from lat/lon to UTM projection)?
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votes
2answers
122 views
Why is my shapefile being displayed in the incorrect position? [closed]
I imported a shapefile from the following link http://geocommons.com/overlays/176. However, it does not import correctly. The data comes in as a "mini planet" in the middle of the US. I only know this ...
6
votes
1answer
600 views
Python script to convert Lat Long to ITM (Irish Transverse Mercator)
I am currently working on a python script that converts Lat Long (WGS84) to ITM. The formulas used are based on a paper published by OSGB (Appendix B):
...
2
votes
3answers
205 views
Is there any way to reproject multiple layers in QGIS?
I'd like to be able to consolidate not only the layers of a QGIS project (using QConsolidate) but also the projections used by each layer. On-the-fly projection reduces performance in QGIS, and this ...
1
vote
1answer
630 views
how to reproject the coordinate system from WGS84 to UTM with ProjNET
I'm new to ProjNET and NetTopologySuite, I get some points with Lon/Lat in WGS84, and the distance between two points is not with the unit of meter, so I want to reproject the coordinate system from ...
1
vote
0answers
56 views
How to Convert Long/Lat from Excel into shapefile? [duplicate]
Possible Duplicate:
How can I convert an excel file with x, y columns to a shapefile?
Possible duplicate,
How can I convert an excel file with x, y columns to a shapefile?
How do I ...
10
votes
1answer
610 views
Projecting sp objects in R
I have a number of shapefiles in different CRSs (mostly WGS84 lat/lon) that I'd like to transform into a common projectly (likely Albers Equal Area Conic, but I may ask for help on choosing in another ...
0
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0answers
163 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 ...
2
votes
4answers
282 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 ...
1
vote
3answers
914 views
How to convert the file with projections in meters to Lat-Long in QGIS ar Erdas Imagine?
I have file in Lambert Conformal comic formate for the data of Australia, Its cordinates are in meters. I want to convert it into the Lat-Long system. Which Projection, Spheroid and Datum I should be ...
0
votes
1answer
96 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
344 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
335 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
50 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
661 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
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1answer
312 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.
0
votes
0answers
294 views
How to convert map coordinates to lat long values in Lambert projection with WGS84 datum using Java?
I want to convert map coordinates values to latitude,longitude values. The image is in Lambert Conformal Conic projection with WGS84 datum, WGS84 ellipsoid. Please suggest to me the formulas involved. ...
2
votes
1answer
714 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 ...
2
votes
0answers
176 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
204 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
113 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
166 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
942 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
136 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
216 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 ...
3
votes
1answer
385 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
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2answers
133 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 ...
0
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0answers
30 views
to reproject shapefile generated from JSON txt file in python [duplicate]
Possible Duplicate:
Defining projection in arc toolbox (JSON to shapefile) in python
I have a toolbox which converts JSON text file to a shapefile. I want this shapefile to reproject ...
1
vote
1answer
100 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
177 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
125 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
440 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
104 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
595 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
592 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 ...
1
vote
2answers
234 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
vote
0answers
237 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
413 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
425 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
vote
0answers
189 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
183 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. ...
1
vote
1answer
206 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 ...
1
vote
2answers
5k 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
132 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 ...
1
vote
1answer
160 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 ...
