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

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42 views

Understanding GDAL ERROR 1: Too many points… failed to transform?

How can one trace the source of the following error when using gdalwarp? (I'm very new to GIS, GDAL and python!) Warning 1: Unable to compute source region for output window 0,0,5789,4748, ...
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1answer
22 views

gdalwarp reprojects only a portion of the raster

I´m trying to re-project a raster from epsg:4326 to epsg:3035 to work with European based datasets. I have been using this command: gdalwarp -srcnodata 9.95924e+36 -dstnodata 9.95924e+36 -s_srs epsg:...
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18 views

convert/reproject netcdf to png [on hold]

I have a netcdf file with GTG data in it that I need to warp and convert to a PNG for EPSG:4326 and EPGS:3857. Information from the file: Variables: var ...
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12 views

Converting radiance raster values to luminance

I have two nightlight data layers of the same area, one is a VIIRS radiance raster (the raster values are radiance values in units of nanowatt/sq.cm/sr) and the other one is a point vector luminance ...
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19 views

Make “Nodata” transparent in raster - Mapfile/Mapserver

I have a raster and I'm trying to make it display in Openlayers2, using Mapserver 7.0 in backend. My problem is, I think, that because the online map is not the same projection as my data, Mapserver (...
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2answers
32 views

R - Easy way to reproject an extent object

I have an extent object that I would like to re-project to lat and lon. >outer_extent outer_extent class : Extent xmin : -5559753 xmax : -4447753 ymin ...
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20 views

How to extract EVI from MODIS hdf data from several time using MRT?

I have been using Modis Reprojection Tool (MRT) to extract EVI from MODIS hdf files. So I have 23 MODIS hdf files from 1 year (16 days temporal) but from the same scene (h28v09). How to extract EVI ...
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1answer
25 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 ...
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2answers
220 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 ...
5
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2answers
187 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 ...
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1answer
42 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 Processing/Toolbox/Qgis_algorithims/...
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16 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
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 ...
6
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1answer
109 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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2answers
46 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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3answers
82 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 html&...
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44 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
72 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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22 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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42 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 rel="...
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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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10 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', 'EPSG:...
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24 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 ...
3
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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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22 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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15 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, ...
0
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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
147 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 ...
2
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1answer
44 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
41 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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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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97 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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15 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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42 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
41 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
40 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
102 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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40 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 \"+proj=...
0
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1answer
46 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
votes
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
57 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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0answers
35 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 '...
2
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1answer
87 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) arcpy.env....
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16 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
50 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 (roads)...
1
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1answer
57 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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19 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: http://wiki.openstreetmap.org/...
2
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34 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, ...
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2answers
110 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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22 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 ...