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

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10 views

Can reference system in Leaflet be changed without disrupting data position?

I have a leaflet map that uses default CRS (EPSG3857) with multiple markers placed on it. Their LatLng are read from JSON file. I want to change map CRS to Simple, keeping markers on exact same screen ...
4
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2answers
191 views

Lat/Long -> UK Easting/Northing?

I have a fairly accurate formula (implemented in C#), which allows me to convert UK Eastings/Northings to WGS84 Latitudes and Longitudes. Despite extensive Google searches, I could not find a formula ...
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2answers
606 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 ...
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2answers
1k 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
165 views

Since ArcMap Projects data “on the fly” why aren't these data sets aligning?

I have a polygon feature class in NAD_1983_UTM_Zone_13N (Green in map). I projected it to NAD_1927_StatePlane_New_Mexico_East_FIPS_3001 (Pink in map). Why are these not aligning? Does this mean the ...
3
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1answer
31 views

QGIS Reprojecting a layer CRS

I have a series of layers of lines (shapefiles) in My Project. The CRS of some are different and to merge them they all must have same CRS. When I use ...
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0answers
31 views

Gdalwarp UTM reprojection causes image distortions

I'm trying to re-project Sentinel-2 images to a common UTM zone in order to create a mosaic. For this I'm using gdalwarp with the following syntax: C:/OSGeo4W64/OSGeo4W.bat; gdalwarp -t_srs ...
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2answers
77 views

Reproject raster without projection info

I'm pretty new to gdal and got a presumably easy question for experienced gdal users. My problem: I have a raster ascii file of which I don't know the projection or epsg code. However, I want this ...
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2answers
36 views

Coordinate System Mismatch

I understand that coordinate system mismatches between layers is a relatively common problem. Nevertheless, exploring other posts hasn't helped me understand my issue. In short, I have a DEM raster ...
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1answer
100 views

Why does the difference between two overlapping rasters exist?

I have two similar rasters of the Mount Vesuvius: one spans 20 kilometers, and the other one 50 kilometers. Both rasters are in WGS84 geographic coordinate system, and they overlap between each other: ...
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13 views

WKT for Local Mine Grid (Again)

I came across WKT for local mine grid which is very close to the question I have. Unfortunately that post doesn't detail a method that I can repeat, just a very good solution. I too would like the ...
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1answer
36 views

Problems with matching vector data with raster data

I’m new in Arcgis, and I have some trouble in this task: I downloaded from ICC (www.icc.cat) a raster data map that is a in a specific coordinate system, if I right click to view its properties, it ...
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2answers
203 views

Defining coordinate reference system with rotation in GeoServer?

I am using GeoServer and have a layer in EPSG:900913 ("Google Mercator"). I need to "rotate" the map around certain point (say, 1500000, 7000000) by certain degree (say, 30 degrees clockwise). How ...
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2answers
606 views

LSA-SAF data reprojection with GDAL and R

The Land Surface Analysis Satellite Applications Facility (LSA SAF) distributes several products derived from the EUMETSAT satellites data. I am working with R to read and process the data (the file ...
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1answer
42 views

Conversion of projection

I have received a drawing with a type of projection system which I do not recognize. The drawing says that it's LO 19/WGS 84. I would like to convert this to decimal degrees to be able to plot the ...
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0answers
30 views

Creating Proj4 string for local coordinates

I am fairly new to coordinate system conversion, so am rather lost on the following problem. We have been using Proj4 to convert between various coordinate systems which is fine for known coordinate ...
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1answer
49 views

Recommendation for getting TIF raster from modis HDF, for processing in R

I've downloaded a set of modis mod13q1 HDF files, e.g. MOD13Q1.A2016097.h11v05.006.2016114040325.hdf. I'd like to load the 250m_16_days_EVI and 250m_16_days_pixel_reliability bands into R as rasters. ...
2
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1answer
192 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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3answers
61 views

How I can reproject a wms service in openlayer3?

I was trying to reproject a wms service from EPSG:25830 to EPSG:3857, but it didn't work. I read that it is not possible to reproject a WMS, only a WFS, It is true? It is the code <!doctype ...
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1answer
253 views

Adding points defined by Latitude and Longitude to map using QGIS?

I have an OS map on which I want to display points defined by Latitude and Longitude, but the map coo-ordinates have values I do not recognise or understand. The image shows the map, with my first ...
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2answers
571 views

Project twitter geo data into WGS84 map

I'm currently working on displaying twitter geo data (currently just long/lat -> cartesian without any analysis). This is the world map (source: naturalearthdata): ...
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1answer
2k views

GPS Coordinates to WKID 102100

I'm currently creating a project for ios and I'm using the latest ArcGIS IOS api. I have a mapView that is using the spatial reference skid 102100 and i am receiving lat long coordinates from an ...
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0answers
18 views

How to do a custom, ad hoc, affine transformation?

I have a data set of unknown origin (probably CAD) and I have determined that the correct transformation for this data into the projection that I want is as follows: (4x + 2205432), (30y + 1254781) ...
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19 views

Creating a reference raster in R

I need to create global reference raster (100km grid, Eckert IV). Later, I will project other various rasters (with different resolutions and projections) into the resolution/projection of the ...
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35 views

Why reprojection GeoJSON with new.ol.View - not working?

I try to reproject GeoJSon file in OpenLayers 3 from : Geojson link With these JS in head : <script src="js/jquery-2.2.3.min.js" type="text/javascript"></script> <link ...
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2answers
190 views

projection differences in R

I am trying to reproject some climate data that I downloaded from http://gdo-dcp.ucllnl.org/downscaled_cmip_projections/dcpInterface.html#Welcomein The BCSD-CMIP5 data is found under the tab ...
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36 views

Rectangle shapefiles with the same extents does not align perfectly after projection

I have a rectangle shapefile built with UTM19 coordinates using a python script, and then projected to NAD83_CSRS (EPSG:4617). I have a second rectangle shapefile built with the same method (python ...
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9 views

Openlayers Reprojection from 4326 to 3395 is wrong?

I'm using proj4js definitions downloaded directly from epsg.io webpage. When trying to reproject a small extent I get this result: ol.proj.transformExtent([-180, -90, -179, -89], 'EPSG:4326', ...
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19 views

export WMTS tiles as MBTiles with reprojection

I need to export tiles from a WMTS server to the MBTiles format. The server is not public, but I have access to it and permission to export a specific portion of the tiles. The problem I have seems to ...
0
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1answer
256 views

GeoTools, convert CRS for Google Maps

I'm trying to use GeoTools to convert coordinates from EPSG:3857 to various CRS, in order to display WMS layers on a Google Map. For example, I want to display a layer in the EPSG:4326 CRS. I have ...
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1answer
22 views

Strange Custom Projection can't be transformed

I've got a a database of feature classes that were somehow transformed into a custom projection that I don't understand, and there does not seem to be a way to get back out of. The projection data ...
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1answer
93 views

Projection system differs

I want to define projection for a Shape file. The projection system is: "NAD_1983_StatePlane_Montana_FIPS_2500" which is referred in Qgis 1.9 as EPSG:102700. The same projection system is not ...
2
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0answers
14 views

units for gdalwrap output extent

I am attempting to write a small bash script that will mass process a large number of raster .tif files. It should do the following: Clip to a smaller extent Reproject to UTM This is what I have, ...
4
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3answers
129 views

Reproject raster with FME

I have multiple .tiff + .tfw files in EPSG:3067, which I need to reproject to EPSG:3878. I tried to do it with FME, and succeeded, kind of. The geotiffs are placed well, but some weird white area ...
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1answer
25 views

Combining data in two projections?

The PAMAP dataset comes divided between two different projections: Pennsylvania North State Plane and Pennsylvania South State Plane. I'd like a great big DEM of the whole state of Pennsylvania. ...
2
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2answers
386 views

How to reproject Geotiff correctly?

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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2answers
72 views

Coordinate transformation in LAStools?

LAStools program only limited to UTM platform for coordinate transformation (las2project, las2transform). Is there any other ways to transform coordinate for local projection in LAStools? For example ...
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3answers
2k views

Coordinate transformation/reprojection using DotSpatial

need some help. The following piece og code worked with an older version of DotSpatial. public static Geometry Project_EPSG25832_To_EPSG3857(byte[] wkb, int SRID) { ...
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39 views

Azimuthal Equidistant Projection - Rotate projection

I am using Azimuthal Equidistant Projection to plot points in a map being drawn in an Android application. The origin is the centre of the map. I have the formulas from here and here. I am getting ...
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2answers
38 views

Strange coordinates for San Francisco: 5979762, 2085921 from Shapefile

I have a Shapefile (.shp, .dbf, .shx, .prj) that's supposed to represent street data for San Francisco, which I'm writing a parser for. The problem is, when I parse the bounding box according to the ...
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86 views

Transformation from local projection to WGS84

I'd like to reproject point that is in local coordinate system to the WGS84, using gdal. But exception "No PROJ.4 translation for source SRS, coordinate transformation initialization has failed" ...
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10 views

How to avoid blurred projection after transformation of .tif files

For my Project I have a lot of shapefiles and .tif files with different projections. I aimed to store everything in a gdb and transform everything to the same coordinate System (ETRS1989 UTM 32N). The ...
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0answers
14 views

Reprojecting tiff with Albers SRS to Web Mercator, How to specify the color filled in blank area?

I'm trying to render a tiff onto a Map, tiff is under Albers Project, the Map is under Web Mercator. After tiff is rendered, the shape of it changed(which is reasonable because of the reprojecting), ...
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1answer
39 views

Reprojecting: trouble converting MapInfo data to shapefiles in QGIS

I was given a dataset generated in MapInfo. I need to use these files in QGIS, so I imported the .TAB files and saved them as ESRI shapefiles. I then realised the original dataset uses a custom "user ...
0
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1answer
50 views

S-JTSK projected incorrectly in JS API

I use a method based on the "project a point" sample to project points from S-JTSK (wkid 102067) to Web Mercator (wkid 102100) and they are ~100m away from their correct position. This happens when I ...
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1answer
123 views

MapProxy with WMTS source and reprojection

I am trying to consume Lantmateriet's WMTS source with EPSG:3006 and convert that to iOS TileOverlay compatible (GoogleMaps compatible) tile server. I cannot get it working. Can someone check this out ...
0
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1answer
36 views

How do I automate a process to reproject and merge all feature classes of three SDE databases with multiple feature datasets included?

I have three different instances of SDE that have the same schema. Each SDE has multiple (5) feature datasets. I need to reproject all feature classe within these datasets to a common coordinate ...
0
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1answer
43 views

Converting shapes using OGR2GUI

I am trying to convert a MapInfo .TAB file to a Shape file while setting the projection of the target to NAD83 UTM Zone 19. The latest version of OGR seems to not have this projection available in the ...
3
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1answer
28 views

How to obtain attributes of a point layer that falls within a polygon layer of different CRS

I have created my own vector grid polygons in QGIS 2.12.2. This creates a new layer to my project, but it's projected in a "generated projection". I want to view the attributes of points that fall ...
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1answer
181 views

How to generate a tiled map from a spherical mercator SVG?

I'm not a GIS person; this is really just a side task, so I probably have terminology/strategy incorrect; I would ask that you please bear with me. I have the following requirements for a Qt-based C++ ...