Aligning geographic data to a known coordinate system so it can be viewed, queried, and analyzed with other geographic data.

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3
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1answer
322 views

Put png map image as a background to draw upon

I have an image of a fiber optics network map: I want to turn this map image (without any actual GIS data) into a vector map where each point is defined by lat, long. To do this, I'm trying to ...
1
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1answer
276 views

Import georeferenced dwg-files to SketchUP

I have a georeferenced dwg-file in a national projection and want to import it into SketchUp pro 2015 without loosing the georeference. My workflow so far was to import it into QGIS, check it's ...
1
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0answers
99 views

Georeferencing reversal of image

I georeferenced a map and it posted to canvas as a mirror image of the original map. I set my project CRS before starting and also made sure to set the same SRS for the Geotiff being created and ...
0
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0answers
64 views

algorithm of v.rectify, v.transform for georeference

Please can anyone tell me what algorithm is used in v.rectify and v.transform to georeference in Grass Gis. Binh grass.osgeo.org/grass70/manuals/addons/v.ply.rectify.html ...
0
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0answers
47 views

Grass Gis supports binary_little_endian 1.0?

Basically, I have a 3d point cloud (obtained by visualsfm) and want to convert it into a world coordinates model (unit: mm) by using ground control points. And, I found these addons v.ply.rectify, ...
1
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1answer
38 views

Georeferencing a raster on top of 2 or more polygons

I am trying to georeference raster sketch maps that have polygons drawn on them to line up with vector polygons. Its relatively easy to do this using the georeferncing toolbar in arcmap for 1 ...
0
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0answers
81 views

QGIS Georeferencer loading very slowly on multi-GB geotiff

I am trying to load a 2GB Geotiff (it's source coordinate system is WGS84) into the georeferencer for QGIS 2.6+. However, once I load the image, I see a blank raster canvas for nearly 10 minutes ...
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0answers
32 views

Dealing with multiple georeferenced, but possibly slightly offset datasets

I have elevation data stored at 5 meter resolution in a raster file. I would like to go in and add this data into a database (lat, lon, elevation.) I have another rasterfile with other data, also at ...
0
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1answer
155 views

Google Earth image projection transformation question

I have taken a JPEG image snapshot of an area on google earth. Within it I marked and record the coordinates of the four corners. I then added and georeferenced the image to a map I was already ...
0
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0answers
31 views

Problems in overlaying NWS flood maps on Google maps

Hope you are doing good. My team is trying to overlay NWS flood maps on to Google maps. The steps we are following are as given below. We downloaded the flood maps from NWS in the raster format ...
1
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0answers
30 views

QGIS Georeferencer adds padding to image after save

I am attempting to georeference an aerial image using satellite imagery. I'm successful in getting an output, however I notice there is an issue where QGIS's georeferencer is adding padding to all the ...
0
votes
1answer
90 views

Georeference a polyygon within a pdf file [duplicate]

I have this pdf file that contains a specific borough of my city, Montreal, with a polygon inside it. Link to pdf file: PDF FILE The jpeg image once exported from the pdf file is the following I ...
1
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0answers
29 views

How to best import a US Map Schematic?

I would like to use the following wiki US Map schematic as a background to my map work. (http://en.wikipedia.org/wiki/File:Blank_US_Map.svg) It is a .svg file, and GeoReferencer is unable to import ...
1
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0answers
111 views

QGIS, GDAL Georeferencer missing?

I've just installed QGIS 2.8 on the new Fedora 22 (64) that came out some days ago. Awkwardly, I can't find the GDAL Georeferencer that, to my knowledge, is supposed to come with every installation. ...
0
votes
1answer
116 views

Georeferencing raster in QGIS

Georeferenced raster in the QGIS not filmed the final display by raster footprints. Everything is in EPSG 32633. Path in GdalToools: Red is original footprint for image. I need rotate image ...
2
votes
2answers
116 views

Is it possible to georeference raster stored in Postgis?

I'm looking to store a huge raster aerial image (400 Gb) into Postgis, but before storing it i like to know how i could georeference or rectify raster stored in postgis ? is there any Qgis plugins ...
0
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0answers
43 views

Georeference a computed tomography image without changing its proportions in QGIS

I have several images obtained from a Micro computed tomography (mCT). The scanned elements are human teeth. In a particular mCT slice, I have introduced a cartesian plot with its X and Y axis. The ...
1
vote
1answer
51 views

Why can't I paste coordinates in “Enter Map Coordinates”?

Using QGIS 2.6.1-Brighton, I am attempting to use the Georeferencer. My data is from NGS datasheets. I copied and pasted the data into a text document. In the "Enter Map Coordinates" dialogue, when I ...
0
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0answers
32 views

Rototranslation + scale of pdf and dxf with USER CRS in QGIS? [duplicate]

i have a map PDF or DXF to georeferenced with only rototranslation + scaling. I use EPSG: 32632, also the map that I need to import is a survey (maxmimal dimension 5000 m x 5000 m), but his coordinate ...
1
vote
1answer
59 views

Satellite image vertically squeezed after being georeferenced

I am using ArcGIS for Desktop 10.1. I am trying to georeference a Google Earth image in Christchurch area, New Zealand. I am using some CGPs I have got from this image (their Google Earth ...
1
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0answers
190 views

How to add geospatial info to an existing PDF?

I work with a small non-profit mountain bike trail advocacy organizationand as a result have created a number of PDF-based maps. These are all Mercator projection, built off of OpenStreetMap data, and ...
0
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0answers
78 views

Georeference Error Messsage QGIS

I'm trying to georeference a 1922 map of Africa by Bartholomew. (found here http://www.davidrumsey.com/maps5268.html). I have it in QGIS and currently the Raster has the default CRS (WGS 84). I have ...
2
votes
1answer
624 views

What causes wrong placement of JPGs in QGIS 2.8.1?

I have the same issue explained in this post: How to keep georeferencing from ArcGIS when importing raster into QGIS? But my problem is with .jpg files. I have georeferenced with ArcGIS 10.2.2 many ...
1
vote
1answer
229 views

Georeferencing/Spatial Adjusting of vector river dataset to DEM in ArcGIS

I have a huge dataset of vector river data (over 10'000 rivers) which are saved in a shapefile and were initially derived from a topographic map. However when comparing this vector to DEM data (SRTM ...
1
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1answer
54 views

Climatic data sets

I did a bulk download of climatic data from http://neo.sci.gsfc.nasa.gov/ in png format so that I will extract my ROI(Africa). After the download I loaded them in Arcgis and discovered they are not ...
2
votes
1answer
68 views

Georeferencing in R Based on the Four Corners

I have a raster image (photograph) that was taken from a helicopter. Along with that raster image, the system also tells me the positions of the four corners of the image in a different file. I have ...
1
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1answer
104 views

Georeferencing Old Mining Maps (Floetzkarte des Oberschlesische) in QGIS?

I am trying to georeference some old mining maps (Floetzkarte des Oberschlesische) in QGIS 2.9. I have already tried to do that by marking known points on present satelite photos, but the results were ...
3
votes
1answer
137 views

Misalignment of EPSG:4326 and EPSG:3399 coordinates

I'm having a QGIS project in local coordinates (Gauss-Kruger, EPSG:3399) with some layers in the same reference system. On top of that, I want to display point coordinates, which I digitized using ...
2
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0answers
801 views

Merge several images and Export a GeoTiff File

I have approx 500 geo-referenced images that I was hoping to merge into 1 geo-referenced file, and export it as a single geotiff file. To be used in AutoCAD Civil 3D I know I am pushing my luck and ...
0
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0answers
137 views

Georeferencing raster imagery using UTM eastings and northings

I have a scanned cadastral map in raster form and UTM co-ordinates in northings and eastings for that area. Is there any way that I can directly georeference my map using E/N values without converting ...
1
vote
1answer
60 views

Is it possible to overlay ungeoreferenced raster images in the QGIS Desktop Browser?

Afternoon ladies and gentleman, I work for a company that produces Mining Investigation reports for property in the South West of England and I have spent the last 12 months digitising abandoned ...
1
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0answers
58 views

Wetterzentrale maps georeferencing - coordinate system?

I'm trying to georeference two maps from wetterzentrale in ArcGIS. In what coordinate system are those maps created?
0
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0answers
50 views

Georeferencer does not open when clicked

Since a week my raster georeferencer is not opening when I click it. I have made sure it is checked in the plugins collection and have tried re-installing the newest version of QGIS, yet also in this ...
0
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0answers
368 views

QGIS Georefencer Failed to compute GCP transform

I am a new QGIS user. I am trying to georeference a scanned paper map. After uploading map to the georeferencing utility and assigning 12 ground control points to map and assigning a datum I get a ...
0
votes
1answer
144 views

trying to build world file for images based off extent rectangle generated from centroid in python

I have centroids for map images which I would like to georeference quickly and rougly via python script, using arcpy. I know the dimensions of the images, the dpi, scale, rotation and the coordinate ...
0
votes
1answer
174 views

Georeferencing in ArcGIS - Zero-Order (Shift)

Zero-Order (shift) transformation is meant for rasters that only require shift, which as i understand it means moving or translating the image. Two questions: Does it mean that two or more control ...
0
votes
1answer
109 views

How to fit polylines to their true position?

I have a satellite image and CAD data of the same area. The polylines from CAD to not overlay correctly on the satellite image. I want to fix polylines to their true coordinates but I could not fix ...
1
vote
1answer
195 views

QGIS georeferencer: Thin Plate Spline (TPS) residual

1) Is anyone able to explain in simple manner what does mean error exactly mean? I use metric values, so suppose 3.64109 is expression of meters and "e" is mathematical constant: ...
3
votes
0answers
233 views

Georeferencing/rectifying multiple images of different shapes and sizes at once using ArcGIS for Desktop?

A couple of weeks ago I georeferenced a set of 7 scanned maps (.tiffs). Although the scans all have different shapes and sizes, the outline of all the maps on there is the same, and after having ...
1
vote
1answer
68 views

How to georeference two pictures that do not have crs in QGIS

I would like to take aerial pictures of my research plots an caculate NDVI and NDWI. How do I do that in QGIS?
0
votes
1answer
114 views

Re-projecting ground control points of similar images (Georeferencing in QGIS)

I have several maps to digitize. The base maps were Canadian NTS map sheets, all for more or less the same region. The useful information has been traced on top with handwritten markings. The maps ...
1
vote
1answer
208 views

Georeferencing an old map in QGIS using Thin Plate Spline

![old map georeferenced badly][1] [1]: I georeferenced this old map using Thin Plate Spline, and Cubic Spline as transformation settings. However, the result was quite bad. Do I have to add points ...
0
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0answers
101 views

How to georeference a raster when target data occupies one-quarter of the raster

I am trying to figure out if it is possible to georeference a raster image in ArcMap when the target data occupies only one-quarter of the raster and the rest of the image is legend or diagrams etc., ...
2
votes
0answers
424 views

Changing the background color of the Georeferencer in QGIS

Is there a way to change the background color of the Georeferencer in QGIS? What I mean is, can I somewhere change the color that does not belong to the image that is about to be georeferenced? Let’s ...
2
votes
1answer
301 views

Georeference multiple raster layers of same area at once or identically

I have many raster layers that I need to georeference to my existing vector layers. Data types vary between 8 bit unsigned, 32 bit float, and bit 64 float. All have the exact same extent, cell size, ...
2
votes
1answer
138 views

Georeferencing uneven/irregularly gridded rasters

I'm trying to take a set of NetCDFs and turn them into georeferenced datasets using GDAL. However, the only Geospatial data is a set of 2-D lat/lon arrays. The projection type is not lat/lon. THe ...
0
votes
1answer
50 views

QGIS and arcmap compatibility in image georeferencing

I have georeferenced an image in QGIS but when I imported it to arcmap 10.0 it saying "In consistent extent". Any one know how to solve it?
1
vote
1answer
556 views

Georeferencing a CAD file and converting to SHP in ArcGIS without distance distortion

i have a land parcels dwg file in an unknown co-ordinate system and i want to georeference the file in ArcMAp and convert it to shapefile but the problem is that whenever i georef the cad drawings ...
1
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0answers
80 views

Georeferenced PDF is checked but doesn't georeference [closed]

I have checked the georeference option for my exported PDF but when I import it into Avenza PDF Maps it says it is not georeferenced. I have had this work for other maps but a new map I opened will ...
0
votes
1answer
81 views

Write single lon/lat coordinates in TIFF with GDAL

Is there a way to write the georeferentiation value by value in a tiff file using GDAL?