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

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15 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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0answers
10 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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17 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. ...
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13 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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27 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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0answers
34 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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14 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 ...
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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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0answers
17 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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0answers
13 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, ...
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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. ...
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3answers
116 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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0answers
27 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
36 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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0answers
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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73 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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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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36 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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1answer
37 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 ...
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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 ...
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2answers
61 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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0answers
26 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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1answer
39 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 ...
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1answer
27 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
43 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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31 views

Need to match the Coordinate system on vector and raster datasets

I have a google satellite image that I am using as my basemap. The problem is that the shp files that I got from some source are projected in WGS 1984 UTM, Zone 42 North, Meter, but its GCS is ...
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1answer
76 views

Making a tool from script, arcpy.Project_management () comes with an error

I have a script (just a fragment here, up until the line after which the error comes up): import arcpy from arcpy import env arcpy.env.workspace = arcpy.GetParameterAsText(0) ...
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14 views

Projection changing when saving PDf or Image from Composer

The issue I'm facing is that when using a print composer to generate a PDF or image with a google earth / bing backdrop the projection of my layers appears to change. Each of my layers is using the ...
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1answer
35 views

Digitized GIS Data - Wrong Coordinate System, Right Location

I (correctly) georeferenced a JPEG to an existing shapefile that was in the correct coordinate system. I then proceeded to create line feature classes by manually tracing some of the features ...
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1answer
52 views

How do I get utm data converted into wgs84 all within Python27?

How do I get utm data converted into wgs84 all within Python27? Does anyone know how to import the QGIS Lyon 'reproject' tool I to Python27? I have a Python script that writes utm Into a text file ...
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0answers
17 views

ggmap openstreetmap SCALE, no zoom necessary?

I am relatively new to map projections but believe I have understood how one could translate lat/lon to the map tile coordinates X and Y, which is nicely explained here: ...
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30 views

Why is grid north so offset? [closed]

I am not a GIS professional, only a casual orienteering enthusiast seeking an explanation from experts. The plat of my property gives bearings and distances for each of the lines, as does the deed, ...
1
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2answers
80 views

Why do my XY cordinates not make sense / show up in ArcGIS 9.3?

In the Add XY Data menu I selected to add a table containing UTME and UTMN coordinates. I selected a WGS84 projection b/c that's what the GPS device that meade the readings was set to use. However, my ...
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0answers
19 views

Why there is a shif in MODIS coordinate (compared with Landsat/google earth image) after mosaicing and subsetiing the study area?

I am facing some difficulties in processing MODIS data set. To have MODIS data over my study area, I need to mosaic two tiles of MODIS (h29 v12 and h30 v12). I have used the MRT tool by NASA (the ...
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0answers
51 views

How to deal with different projections in PostGIS spatial analysis?

I am doing something wrong, but try as I may, I can never seem to grasp all aspects of how to project layers in GIS. I am working with two files: 1) The USGS maintains a list of locations with ...
3
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1answer
52 views

Rotating ~90° using Two-Point Equidistant projection with Proj4

I'm trying to rotate a tif raster in R using Proj4's Two-Point Equidistant projection - I think the only way to rotate spatial geometries to custom angles. But I'm finding the operation gets very ...
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0answers
54 views

Reprojecting a raster file in R

Help! I have a number of rasters from different sources with different projections. I want to reproject the rasters into a common projection (Eckert IV), somehow line the grids up, and then overlay ...
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0answers
24 views

Cordinate System Conversions

I have my council installations all in GCS WGS84 but they where mapped in Arc 50 coordinate system. When I display them on my Arcmap they do not coincide with the other layers such as roads and ...
1
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0answers
30 views

Where can I download a world shapefile with 180-degree central meridian?

Does anyone know where I could download a world shapefile that has a projection with a central meridian of 180 degrees longitude? I have found the following question that provides instructions for ...
1
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1answer
28 views

transformations from a sphere using R for raster and polygon data [duplicate]

I am planning on using the MODIS burned area products which were produced by Maryland University. These come as either polygons or rasters. In the user guide it says A shapefile version of the MCD45 ...
2
votes
1answer
34 views

ProjNet Nad 27 to WGS 1984 Results Incorrect

I'm fairly new to the ProjNet library and GIS in general so please bare with me. I have a set of coordinates from a EPSG:32038 system and I'm trying to convert to decimal Latitude and Longitude (WGS ...
2
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1answer
30 views

projecting onto Cartographic coordinates using Gauss Conformal Mercator in python

The shapefiles and boundaries I work with are on WGS 84 referenced to SA: GEOGCS["WGS 84", DATUM["World Geodetic System 1984", SPHEROID["WGS 84", 6378137.0, 298.257223563, AUTHORITY["EPSG","7030"]], ...
1
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1answer
80 views

Getting inaccurate results converting from New York State projection to NAD83 with Python's pyproj

I've been trying to do a standard coordinate translation between New York State Long Island (ESRI:102718) and latitude/longitude (EPSG:4269)...but I keep getting the wrong lat/lng results. I don't ...
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1answer
29 views

How to read info from the CRS? [duplicate]

I'm struggling to understand how the geo projections work in practice. The info a the CRS is as follows: {'ellps': 'WGS84', 'no_defs': True, 'proj': 'longlat'} Does it mean that the coordinates are ...
4
votes
1answer
56 views

Datum and transformation error using ST_Transform in PostGIS, going from NAD83 to NAD27

I created a function in PostgreSQL to transform input coordinates using UTM Zone 12/13, with Datums NAD83 or NAD27, to the WYLAM projection. I had to manually create the entry for the proj4text ...
0
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1answer
26 views

Reproject non-earth to ITM/ICS

I'm trying to convert MapInfo, non-earth projection, layers with data in ITM or ICS (Israel coordinates in meters). When I do so through Universal Translator with converting to SHP and back again, ...
4
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0answers
67 views

Crop raster based on another raster R

library(raster) How can one clip one raster based on another raster? RasA: class : RasterLayer dimensions : 459, 533, 244647 (nrow, ncol, ncell) resolution : 10000, 10000 (x, y) extent ...
2
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0answers
38 views

How to remove projection in terminal from .shp file with valid .prj available

I have .prj, .shp, .sbn, .sbx, .shx, .dbf files where the content of the .prj file is the following: ...
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0answers
50 views

Change raster projection in R

I'm trying to change raster projection using R and its raster library. The input raster projection is Lambert Azimuthal; this one and other params can be seen here: ...