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

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726 views

Reprojecting WGS 1984 Web Mercator (EPSG:3857) in Python with GDAL

I am reprojecting rasters in python using GDAL. I need to project several tiffs from geographic WGS 84 coordinates to WGS 1984 Web Mercator (Auxiliary Sphere), in order to use them later in Openlayers ...
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1answer
162 views

How to reproject from Clarke_1880_RGS_Lambert_Conformal_Conic to ETRS_1989_LAEA?

I am unable to reproject Marseille shapefiles from Clarke 1880 RGS_Lambert_Conformal_Conic to ETRS_1989_LAEA. I know that Clarke is a geographic coordinate system and it has no datum. I have tried ...
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1answer
188 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
362 views

get data from WFS and present in using d3js - correct projection

I'm trying to get data for map of Poland. I found WFS service that provides GML files. It is located under: http://sdi.geoportal.gov.pl/wfs_prg/wfservice.aspx?request=getCapabilities&service=wfs ...
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1answer
369 views

Reproject GeoJSON from EPSG:3857 to EPSG:4326

I am using this reproject tool to convert a GeoJSON point from EPSG:3857 to EPSG:4326. My command fails. What am I doing wrong? $ echo ...
3
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1answer
1k views

How to reproject MODIS Swath data to WGS84

Im new to GIS and now working with MODIS04L2 Aerosol Optical Thickness image. I need to reproject the image to other coordinate system such as WGS84 for later work but now Im stuck with it. I have try ...
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1answer
1k views

How to reproject geodatabase (*.gdb) with datasets and featureclass using custom transformation?

I have a file geodatabase in arcMap which in in EVEREST_1830 datum and Modified UTM projection. Now I need to use OpenStreetMap or googlemaps imagery WMS layer as base layer and overlay the datasets. ...
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2answers
712 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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2answers
1k views

Calculating bounding box coordinates based on center and radius

I need to calculate a bounding box for osm query. I get coordinates of center of the area (WGS84) and radius (meters). How can I do it? I though about using some kind of projection, calculating ...
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1answer
94 views

Finding points on an odd map projection using interpolation between known points

I have an image of a somewhat idiosyncratic projection that is a frame from a film: A geographer friend of mine said it was probably some kind of Gnomic projection, but that from the resolution it ...
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2answers
2k views

How to convert 6 digit latitude & 7 digit longitude to degrees

Sorry, but I'm a bit new to the whole GIS world, and though I am making great headway drawing polygons and such in Bing Maps, I am currently stuck. In our SQL spatial data, I came across MULTIPOLYGON ...
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2answers
339 views

On the fly transformation From WGS84 to NAD27 with proj4 code

I want to use this proj4 code: +proj=utm +zone=19 +ellps=WGS84 +toclrk66=-3,142,183,0,0,0,0 +units=m +no_defs or this one +proj=utm +zone=19 +ellps=WGS84 +tonad27=-3,142,183,0,0,0,0 +units=m +no_defs ...
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2answers
102 views

Custom BatchProject Script

Here's my problem. My GPS collects data in WGS1984 and I have decided to start working in UTM instead of state plane. Needless to say, I would edit shapefiles, not paying attention to what ...
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1answer
133 views

Miller cylindrical projection - central meridian

I'm new to projections topics and I've got a question that may be silly, but I hadn't found answer so far. I'm trying to use Miller's cylindrical projection for converting osm lat/lon to x,y values. ...
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1answer
592 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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521 views

Get XY coordinates in UTM from web-mercator where UTM zone is not known

How to get XY(northing/easting) coordinates in UTM where data is WGS_1984_Web_Mercator_Auxiliary_Sphere(WKID: 3857) coordinate system and UTM zone is unknown. For e.g. India falls under multiple UTM ...
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1answer
227 views

How to get screen coordinate from geographic one?

I need to know, how can I convert some geographic coordinates to the screen one. I want to remind you about desktop coordinates system, how it look like: I've developed soft, which is loading map ...
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1answer
92 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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1answer
378 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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3answers
544 views

How to find and apply reprojection parameters?

I have a data set in one projection, and a shapefile in another, and I am trying to combine the two. I am using Python. I apologize for posting a "help me transform coordinates" question on this site ...
2
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1answer
786 views

Postgis | Problems Reprojecting a Point from UTM ED50 to GEOGRAPHIC ETRS89

I've got a POINTS PostGIS table in the 23030 (ED50 UTM 30N) SRID. I'm having a lot of problems trying to reproject those points from ED50 UTM coordinate system to ETRS89 Geographic (lat/long) ...
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3answers
314 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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3answers
2k views

Formula/ calculation for ESRI map coordinate conversion (meter to decimal degrees)

I'm new to ESRI mapping. I have a set of points in ESRI, with x, y, z coordinates, which I believe is in meters. I am now writing an Android program, and I do not want to depend on ESRI, thus I would ...
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53 views

Combining two separate shapefiles with undefined projections out of Leica

So this is a mess. When the software outputs I have two shapefiles. The projections aren't defined, but I know one is WGS84 and the other is NAD 83. The NAD 83 includes northing easting and ...
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159 views

Points warped when exporting to shape file (position off in Qgis when imported)

I have just purchased a used Trimble GeoXH and I have done some surveys. I did the differential corrections in Trimble Pathfinder Office 4.10. I have exported the corrected and uncorrected files and ...
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1answer
141 views

Different output from running algorithm in toolbox and from script

I am unable to get the same results when running the qgis:reproject tool from QGIS processing toolbox (QGIS version 2.0.1) as when running it from a Python script (console). In this example I am ...
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2answers
213 views

No prj file output from qgis:reproject

I'm trying to reproject a vector layer using the 'qgis:reproject' algorithm in the processing/sextante module of QGIS, from Python. This kind of works, but the .prj and .qpj files created after ...
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3answers
421 views

Arctic EPSG:4326 map projection?

Does anyone know of a source for an Arctic EPSG:4326 map projection? Obviously I'm a GIS newbie, so gentle pointers in the right direction appreciated! It's a long story. I have some arctic ice ...
3
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0answers
540 views

Fortifying re-projected shapefile for ggplot2 in R

I have a shapefile of US county boundaries which I got from the NHGIS. I can load the file using the rgdal package and see information about it: library(rgdal) shp_1860 <- readOGR("shp", ...
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1answer
115 views

How to reproject EPSG:102218 with QGIS?

I have a raster file. ArcMap says it is in NAD_1983_USFS_R6_Albers (EPSG:102218). QGIS says it is in USER:100000 - * Generated CRS (+proj=aea +lat_1=43 +lat_2=48 +lat_0=34 +lon_0=-120 +x_0=600000 ...
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2answers
130 views

why is there a difference between using EPSG and using basic code

I have the OSgeo4w installed on my PC and I am trying to upload ITM(israel transverse mercator) landmarks to google earth. To do this I am using the cs2cs command.I noticed that i get a deviation ...
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1answer
944 views

GeoTools and PostGIS with ESPG:3857

I'm trying to use both PostGIS and GeoTools with the same ESPG:3857 projection, however, it looks like the projections in PostGIS and GeoTools differ. This is what I have in PostGIS: PROJCS["WGS 84 ...
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1answer
517 views

How do I convert longitude & latitude to a 3d (geocentric x,y,z) coordinate?

I'm interested in finding the centroid of a point cloud. I understand that to do this I need to convert latitude and longitude values to 3d coordinates, average them and then convert the resulting ...
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1answer
75 views

How can I reproject a shp file in NAD_1983_UTM_Zone_15N to something more standard

I have a public shp file data set which is in a format that doesn't contain actual latitudes and longitudes (prj file below). I'd like to load it into SQL and be able to utilize the latitude and ...
2
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1answer
206 views

GeoRSS reprojection

Sorry I'm newbie in ESRI API javascript, I'm trying to to change the GeoRSS projection from from 102100 to 54030. could anyone give me a hand?! please! my project script is: var map; require([ ...
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2answers
295 views

Convert file with coordinates, keep record ID

I have the following sample data: 345 -515561.05 -1166540.03 456 -515542.01 -1166548.76 999 -515519.61 -1166552.19 789 -515505.29 -1166550.25 321 -515477.05 -1166546.82 201 -515431.12 -1166534.06 197 ...
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0answers
77 views

Gauss-Krueger coordinates in Openlayers

I want to show the coordinates of my map in gauss-krüger coordinates, but nothing works. I tried another projection, displayProjection, lonLat.transform but the answers are the same. my source ...
3
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1answer
95 views

Does anyone know how to make new CRS to reproject some old plans?

I need to reproject some old Cadastral plans, but I can't find any appropriate CRS on web. They are in old Hungarian System (Budapest tangent plane stereographic projection) which used in late XIX ...
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1answer
57 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 ...
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1answer
228 views

how to project a flat image to spherical mercator EPGS:900013 to use in a Image Layer in openlayers

I have a flat 400x400 pixels image which represents an area of 400x400 kilometers. I need to draw this image as an overlay on my OpenLayers mapping system. I use OpenStreetMap/Google Maps as base ...
2
votes
1answer
46 views

Download from GPS / changing SCR / still not working

I use a GARMIN GPS; I download my points from the GPS by using GPS tool; I "try to" change projection (SCR) by changing layer property/specify SCR Still, it not working and I cannot view my layer on ...
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2answers
2k views

which is the suitable Geographical Coordinate System and Projected Coordinate System for India

I want to create a spatial data for entire India, usually I use WGS84 as GCS and UTM zones for PCS in the places in India, but when I have to create the spatial data for entire India, I get confuse ...
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2answers
164 views

Distance between latlongs varies in different projection systems?

I have shapefiles with correct projections. The SRS is EPSG 32735 (WGS 1984 UTM 35S) Now, I have these two coordinates from this projection system: (31.3751,-23.4388) and (31.3779,-23.4355). ...
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votes
1answer
108 views

How to do a raster reprojection in QGIS with custom map parameter

I'd need to reproject a raster dataset in a new customized projection, but I'm fairly new at both QGIS and GDAL and I'm not exactly sure about how to proceed and what the exact syntax is. The ...
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1answer
86 views

New Zealand Projection System

I have a database with Easting and Northing points of New Zealand. The data structure is as follows Easting | Northing 2595425 | 6622565 2594585 | 6622595 2595000 | 6622085 2594500 | ...
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1answer
181 views

How to Buffer data in a Geographic coordinate system?

I am having an issue with buffer. My data is in Geographic coordinate system. I am trying to do a buffer of 600m and i am finding different results for each case, have tried thse so far: Map in web ...
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0answers
129 views

Am I correctly projecting a geometry using a WKID in ArcObjects?

I would like to take in any valid WKID for a spatial reference and then project a single geometry to it. The following code seems to be working, but (1.) can someone verify that this is the correct ...
2
votes
1answer
410 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") ...
3
votes
1answer
5k views

Transforming from SRID 900913 to 4326 with PostGis

I have two Postgres tables with different SRIDs: 4326 and 900913. I want to convert the latter to 4326. I first changed the SRID using: Select UpdateGeometrySRID('table', 'geomcolumn', 4326). I ...
0
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1answer
329 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 ...