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

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67 views

Is it possible to reproject KML using ESRI's Silverlight API?

My question is similar to this one, but for Silverlight. I need to reproject an entire KML file to NAD83, add it to the map with all the layers, symbology, etc. in tact. Is there anyway to do this ...
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0answers
11 views

Optimize openlayers / Geoserver 2.5 with GeoWebCache - reprojection necessary?

I have an openlayers map setup with several base layer options (some served by my own GeoServer) and many optional layers served by my own GeoServer. I've selected Google's EPSG:900913 as the map's ...
2
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1answer
22 views

Crashing trying to warp map files

I have been trying to warp ECW and Ozfx3 map formats to GeoTiff format. I have navigated to Raster>Projections>Warp(reproject) I have then selected the file to warp the output that I want and ...
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2answers
238 views

How to realign misplaced GeoTiffs?

I have bought a few (30) GeoTiff maps from my country's Geo-department - South Africa. They all have a date in the filename and the newest one was created in 2004, I see one is dated 1977 - that old! ...
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1answer
35 views

Converting unknown type of coordinates to lat/lon

Our company is using Total Station (Surveying Machine using SOP) to calculate GPS coordinates and its results are something like this Easting: 3250193.00, Northing: 1115573.00, Elevation: 656.00 ...
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24 views

Reprojecting vector layer in OpenLayers

I have a simple OpenLayers map, where I would like to display the OSM map (the base map, in EPSG:900913) with some points on top of it (a vector layer, in EPSG:3763). I use proj4js. I do convert a ...
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1answer
40 views

Re-project raster image from Mercator to Equirectangular

I have a raster image of the world map in Mercator projection, square 1:1 format. I want transform the image into an Equirectangular projection accurately. I assumed from my research that GDAL would ...
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1answer
122 views

Azimuthal Equidistant - 40,000 Km range

I've been looking at making an azimuthal equidistant map. There are several web sites that offer to make one, based on my location, but they all have the same problem. They assume my antenna rotates ...
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254 views

Lat/Long to XY conversion with Geometry Service

I am attempting to make a simple map that will allow users to see a truck's GPS location on top of a tiled map service. I am having difficulty getting the graphic symbol to overlap my tiled service ...
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1answer
145 views

ArcMap Raster to NetCDF - lat/long

I need to convert a few files which are projected in WGS84 into netCDF. NetCDF requires lat/long. I am a bit confused on how the process is handled by ArcMap especially after looking at the online ...
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1answer
267 views

How to re-project the EASE (Equal Area Scalable Earth) grid with a ~25 km cylindrical projection to WGS84 0.25 degree?

I have nc files ,here is one file https://echange-fichiers.inra.fr/get?k=LUfqiyO1Dl7az5bihnS. from the metadata ,the projection is cylindrical and the resolution is 25 km: ...
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68 views

Add EPSG:3857 geometries to map using Leaflet

Right now Leaflet can only add geometries with latitude and longitude values onto the map. If we have a EPSG:3857 point, whose x=-11819829 and y=4200860, how can I add it onto the map? If this point ...
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20 views

How can I reproject a layer in pyqgis?

I have a problem. I'm currently trying to get the extent of a vector layer in latitude and longitude coordinates in python. The layer is currently in EPSG:3857, so .fullExtent() is not returning what ...
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1answer
40 views

Importing data into a project with a custom CRS incorrectly projected

I created a custom CRS for a project I am working on. I then started a new project, set to my custom CRS and turn on "on the fly" transformation. I import Rail data that I know is in my custom CRS, ...
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26 views

Reprojecting basemap in arcgis 10.1 [duplicate]

Is it possible to reproject a basemap in ArcGIS 10.1 into a customized spatial reference (and if so, how ?) ? I want an OpenStreetMap basemap to fall into my local SR. Done some research on the ...
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3answers
173 views

Problems displaying reprojected WMS in QGIS 2.0.1

I'm loading a WMS layer in QGIS 2.0.1 using the coordinate reference system SWEREF99 TM EPSG:3006, a Swedish crs. The layer displays in the map but when I zoom in to Sweden using the Zoom in-button I ...
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1answer
150 views

Raster on-the-fly projection in ArcGIS has different resolutions

I have a map document authored in ArcMap. The spatial reference for each of the raster layers is Alaska State Plane. If I set the Data Frame projection to Web Mercator (Auxiliary Sphere), then my ...
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5answers
2k views

Does Re-Projecting an ESRI ShapeFile only update the content of the .prj file?

if i wish to change the projection of some shapefiles from .. lets say NAD83 (4269) to WGS84 (4326) ... and by using some 3rd party app .... does this mean the .prj file is only updated .. and not the ...
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62 views

Point Layer WMS GetFeatureInfo failing when zoom in

I have a problem that i think is related with the interaction between OpenLayers and my Google map Base Layer (inconsistencies with coordinates systems, or something like that). Maybe also this could ...
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1answer
113 views

Linear unit of a Coordinate system

My dataframe coordinate system is in UTM with linear unit Meter. If I have a Polygon shapefile in a UTM coordinate system with a linear unit of Foot_US and I am sent a shapefile in the same UTM ...
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3answers
2k views

Geographic Coordinate System to Projected Coordinate System

I am trying to convert a shapefile from GCS to PCS to calculate the area of each polygon. I have tried two different methods: 1) "Data Management Tools->Projections and Transformations->Define ...
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1answer
38 views

Reprojecting kml in NAD27, 83 or WGS84 using QGis

I have downloaded a kml file from Google containing location of shops. The coordinates in that file are in lat/long. I have other shp files containing roads and territories. I am trying to have all ...
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1answer
63 views

Gdal doesn't recognise ArcMap 10.1 EPSG:3857

I have projected a geotiff to EPSG:3857 using ArcMap 10.1 (in Arc it is called “WGS_1984_Web_Mercator_Auxiliary_Sphere”). The coordinate parameters look correct, so Why does gdal not recognise the ...
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1answer
142 views

Orthographic reprojection with mapnik

I am trying to create a google earth like wep application. My problem is that I can't get to render a full view of the earth. The zoom_all() function generates the following error : RuntimeError: ...
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2answers
238 views

GDAL/proj4 equirectangular projection coordinate system units assumed by OGRSpatialReference and GDALDataset::GetGeoTransform()?

How do I configure my OGRSpatialReference object to specify an equirectangular projection system http://en.wikipedia.org/wiki/Equirectangular_projection where the affine geo-transform matrix (provided ...
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1answer
37 views

Why are some layers saved with custom CRS while others use the appropriate EPSG code?

I have a number of .shp's that I have converted from EPSG 4148 to CPNO27. Some have come out perfectly and others revert to EPSG 1000007. I have checked and the only difference between the two is the ...
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1answer
36 views

Can I automate State Plane to Lat/Lon conversion in CartoDB?

Reading this: How do I convert State Plane coordinates to latitude-longitude? but ... I'm using CartoDB and wondering if there's a straightforward way to convert New York-Long Island State Plane ...
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1answer
38 views

UK Ordnance Survey Code Point. Projection change (OSGB 1936 to WSG84)

I am trying to overlay CodePoint with Polygons onto leaflet JS. My current problem is converting the .shp file into the correct projection and a kml. If I open the shp file (using qgis) with the ...
5
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2answers
853 views

How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)

I am working with the ESRI Silverlight API. I found THIS post in the ESRI forums and THIS OTHER which show how to convert between WGS84 geographic coordinates and WebMercator coordinates. I want to do ...
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18 views

Reconcile projections between .dxf and ESRI shapefile [duplicate]

My .dxf file that doesn't overlay or does not reproject with, like, the official shapefile for my state. The .dxf file came from a .dwg file from a local company that does pipe laying -- I just ...
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1answer
181 views

How to transform/convert Coordinate Reference System with Proj4 and php

Basically my question is: Can I combine the functions of proj4 with php in my server? For example, I would like to know if it is possible get data in WGS84 and transform in ETRS89. I need to get ...
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1answer
114 views

Modify CRS to match boundaries of shapefile

I have boundary data in WGS'84 lat/long and data in a custom generated CRS. The data in the generated CRS appears to be offset by a particular vector compared to WGS'84. I want to attempt to match the ...
2
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0answers
154 views

Mapping Geocoded addresses onto Census shapefiles in R

I have a list of addresses that I have geocoded to get the corresponding longitude and latitude. > AddressDetail <- geocode(match_address) > coordinates(AddressDetail) <- c("lon", "lat") ...
2
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1answer
36 views

File size inflation normal with gdalwarp?

After using gdalwarp to project and align-to-grid (via -tap) a number of rasters I noticed that the output rasters were significantly larger than the original rasters. A fairly thorough web search ...
5
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2answers
166 views

Raster: mosaic first, or project first?

I have a thousand raster tiles in un-projected decimal degrees from which to build a seamless mosaic in a metres-based coordinate system. The final image will be about 70,000px by 50,000px. Which is ...
2
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1answer
60 views

Conversion of Latitude/Longitude to different map projection

I have two m*n matrices coming from a WRF-ARW simulation: one exclusively with longitude values and one with only latitude values. For both matrices I know the originatin projection (lambert conic ...
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1answer
55 views

Reprojecting in postGIS from 900913 to 4326. Wrong coordinates

I'm working with postGIS 2.1 I have a table called 'xacementos' created with the srid: 900913. I took the points coordinates from google maps and I want to convert them to SRID:4326 to show the points ...
2
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2answers
37 views

Historical maps as cylindrical projections

Objective: I want to overlay old, historical maps on top of Google Maps. According to Wikipedia, Google Maps uses a variant of the Mercator projection, a close relative of cylindrical projections. ...
1
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1answer
121 views

Comparing features in GIS interface with Google Maps/Bing Basemaps - Which Co-ordinate system to use?

I want to compare some Geographic features in my data with Google maps in ArcGIS platform using a third party application. But I prefer the output to be in Local UTM cordinates. What is the best ...
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17 views

ArcGIS10.1 raster calc introducing unpredictable shifts

I'm reprojecting a DEM to the MODIS SIN grid, and find horizontal shifts in the output. I'm using raster calculator with just the DEM as input and environmental variables to specify output coord ...
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1answer
47 views

Why do MGI and WGS 84 data not line up in ArcGIS for Desktop?

When i reproject raster from MGI 6 zone to the WGS84 it makes a mistake (it is moved for 380 m )See example below: I know that the problem is in MGI 6 projection (it is not accurate),but I do not ...
2
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3answers
154 views

How to reproject WGS84 to a metric coordinate system with own reference point in QGIS?

I have GIS data in EPSG:4326 consisting of 2D points, linestrings and polygons that are all close (i.e. less then a couple of hundred of meters) to a certain WGS84 coordinate point. I would like to ...
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1answer
56 views

Why am I losing part of my raster when I reproject?

QGIS 2.0 Working with tiff raster file. Reprojections are in WGS84 Mercator. Here is my problem: I am trying to use buffers or urban areas to analyze light intensity on a raster layer. I want 30 ...
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1answer
138 views

How to Reproject a DWG file?

I've been asked this question by a friend of mine, and from my experience with Autocad (which is rather small), I can't remember if the software supports reprojecting layers from a projection/datum to ...
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1answer
41 views

Lambert Conformal Conic Projection Inverse Transform after Fitting Ellipse to Noisy LLA Data

I'm using Python and Basemaps to convert some Lat Lon data to the LCC projection and back again. Since it is noisy data representing the footprint of a satellite, I am filtering it and fitting an ...
2
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3answers
83 views

Geotiff reprojection

I am new for GIS programming. I try to change geotiff coordinate system from epsg 32635 to epsg 4326. I used the following gdal command: gdalwarp -rc -s_srs epsg:32635 -t_srs epsg:4326 -dstnodata 0 ...
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1answer
53 views

Which projection: Map from South Tyrol (Italy)

I need to find out what projection this base-map has for digitizing the information that was drawn on it. It's from South Tyrol (South Tirol) in Italy. I have the following information: Title: ...
2
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0answers
20 views

Re-projecting WGS84 to OSGB in SAGAGIS

I took some points with a GPS, and I'm trying to convert from GCS to OSGB 1936 British National Grid in SAGAGIS. I'm working with a shapefile. To reproject the vector layer to the OSGB projection I ...
2
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1answer
56 views

Why is my longitude conversion from NY State Plane Coordinate System to WGS84 consistently off by 3.665 degrees?

I'm trying to convert coordinates from the NY State Plane Coordinate System for Long Island (zone #3104) to WGS84 using the GeoTools Java API. The latitude value is correct, but the longitude is ...
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53 views

How can I use the proj string in java code?

I want to do projection from UTM/oblique mercator CRS to WGS84. And I know the solution to use a proj.4 string in commandline like+proj=omerc +lat_0=51.4 +lonc=7 +alpha=-10 +k=1 +x_0=0 +y_0=0 +gamma=0 ...