Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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

0
votes
0answers
3 views

Raster does not show up after adding in Freehand raster georeferencer

I have a large orthophoto that shows up fine when dragged into QGIS 3.0.1. I am using ESPG 32610, and my basemap layer (also a raster) shows up fine. I wanted to play with the Freehand raster ...
0
votes
0answers
18 views

County level georeference verification

I want to identify records that have been erroneously georeferenced outside of the county provided. I have a CSV of data that includes country, state, county names, latitude and longitude. I have a ...
1
vote
0answers
28 views

Georeferencing non-georeferenced images in rasterio?

How do you georeference a non-georeferenced image in rasterio? I am using the images I created in PIL.image.merge in another piece of code and one of the bands used to create them. The code is ...
0
votes
0answers
14 views

Combining a set of unreferenced TIFF rasters with metadata in separate file - QGIS3 [duplicate]

I have a set of 50 TIFF rasters from an aerial survey that I would like to use to create a continuous map. Each raster is large- ~100mb. The images are not a true grid, and there is overlap between ...
2
votes
1answer
53 views

How to obtain TIFF file using data from CSV files

I have a set of CSV files containing lat-long values for certain land cover classes. Long Lat 80.1 23.0 80.2 23.1 80.3 23.2 80.4 23.3 ... From this point on, I need to generate a TIFF file ...
1
vote
1answer
27 views

Why doesn't QGIS georeferencer support gdal scripting for projective transformation?

I am georeferencing drone images with QGIS, and the transformation method that gives the best results is the projective one. As I have many images, I would like to write a gdal script to automate the ...
2
votes
0answers
32 views

coordinates of objects from geo-tagged images

I have geo-tagged images (i.e have the latitude and longitude from where the images were taken) from a truck every 20 feet. I am trying to understand if it is possible to extract the latitude and ...
0
votes
0answers
47 views

Georeference problem

I have a raster in the CRS 21781, that is correct (on the fly). When I try to convert it into the CRS 2056, to make after some operation, qgis displace the raster somewhere else. I ran this on qgis ...
0
votes
0answers
14 views

How to use Raster Bender plugin in QGIS 2.18?

I have a distorted raster of a historic map that I need to warp to match the modern map. I've installed the plugin Raster Blender, but I can't work out how to use it, and can find no instructions ...
0
votes
1answer
67 views

Highlighting an area of a map

I would like to have a borderline around a subset South-South(SS) part of the map (Map 1) (More like highlighting the subset part). I tried to clip a vector of the subset (map 2) to the entire map, ...
0
votes
1answer
27 views

ArcScene - Spatial reference

I am having trouble merging different layers in ArcScene. As there is no such thing as the "Georeferencing" used in ArcMap, I am not able to view two different Layers in one document. Is there ...
0
votes
0answers
31 views

Georeferenced map displaying garbled image in QGIS

I am trying to georeference an image of a geologic map. I'm using the georeferencer plugin on QGIS 3.0. The map seems to project to the right place, but the image of the map is just a bunch of ...
1
vote
1answer
71 views

Disappearing map image when georeferencing in ArcGIS 10.6 desktop

I am trying to add an un-georeferenced map into ArcMap as raster so that I can manually georeference it, then use it as a base to draw polygon features on top of it. I can add in the image and ...
0
votes
0answers
56 views

Spatially referencing shapefiles in ArcGIS Desktop?

I have started making a map from an un-georeferenced image. I have created a number of shapefiles (each of which I have put in the correct coordinate system). I have now found some reference points - ...
0
votes
0answers
14 views

Adding spatial reference to nc file?

I want to add spatial reference to a nc file. I created a raster dataset (in tiff format) from that data, but the only thing I know about it is the cell size is 2 km. Below is the properties ...
0
votes
3answers
58 views

Georeference old historic maps of Africa in ArcGIS 10

I have a couple of historical maps of Africa which need to be georeferenced. There are latitude and longitude information on the map and now my question is may I use wgs84 in order to georeference ...
0
votes
2answers
56 views

Calculate accuracy of georeferencing

I'm working on georeferencing old maps for archaeological purpose. Of course, colonial maps all do have some degree of transformation needed. But sometimes a specific region is well mapped while the ...
0
votes
0answers
30 views

QGIS georeferencer loses GeoTIFF attributes?

I used the georeferencer with QGIS 3.2 and I imported an image with the following EXIFS ExifTool Version Number : 11.09 File Name : Directory : ...
1
vote
1answer
33 views

Importing CSV matrix of z values to raster with no x y coordinates using ArcGIS Desktop?

I have a CSV file of depth values that have no spatial information. I know the "cell size" of the data but not where it should be put in space. How do I convert this into a data format, such as tif, ...
0
votes
0answers
32 views

Georeferencer in graphical modeler QGIS

Is it possible to automate georeferencing in graphical modeler, I want to extract images from a site and georeference them with QGIS. Graphical modeler algorithms won't show Georeferencer.
0
votes
0answers
14 views

Georeferenced Depth Profiles in 3D

I am a Geophysicist. We often create 2D deptth profiles like so https://www.google.com/search?q=ERT+profile&safe=off&client=firefox-b-ab&source=lnms&tbm=isch&sa=X&ved=...
0
votes
1answer
26 views

Recurring system crash while using GDAL Georeferencer in QGIS 2.18

I am currently working on aerial images I have to reference in QGIS. I usually use the GDAL tool for that, but during the last days, QGIS crashes all few minutes whenever I use it. I ran into this ...
1
vote
1answer
51 views

Georeferencing metadata in GeoTIFF files

I am generating maps as TIFFs using the raster package (writeRaster) in R to generate small tiles, then as a final step, combining the tiles via the GDAL script gdal_merge.py. I thought the resulting ...
2
votes
0answers
24 views

How to georeference multispectral raster without loss of data

I am trying to align two rasters made of data captured during same flight, but with separate cameras (drone - onboard, and Micasense RedEdge) and two separate gps devices (drone and another one ...
1
vote
1answer
13 views

Georeferencing CAD drawing and setting ground control points in GRASS?

I'm fairly new to QGIS and Grass GIS, and learning the interface. I have a CAD drawing that has no coordinate system assigned and needs to be georeferenced to NAD83 HARN Northern Colorado (feet). I'...
-1
votes
1answer
38 views

What Python libraries can I use to georeference standard MODIS products?

I want to create georeferenced standard Swath MODIS products (for example, MOD02QKM hdf files) using Python. What Python libraries can do this?
0
votes
0answers
36 views

Fixing incorrect raster extent?

I have georeferenced rasters in ArcGIS based on a raster with the wrong extent. As a result, not only is the extent much larger than it should but the cell size is 100x greater, though the coordinate ...
2
votes
0answers
55 views

Georeferencing lat/lon .png map and adding grid using lat/lon

I'm trying to input a .png map into my QGIS project for a small area in South Africa. I don't know the CRS used to create the map but it has a grid system on it with the lat/lon labelled (created ...
2
votes
1answer
52 views

Rotating and scaling raster without distortion using QGIS?

I have some low-quality vector data and I'm trying to align some higher-quality raster images with it so that I can improve the vectors. Unfortunately the rasters have no control points or coordinates,...
4
votes
0answers
59 views

Adjusting georeferencing of GeoTIFF?

I have three thermal IR images of a boat acquired by a drone as it flew overhead. The images were taken at one second intervals, are GeoTIFF files and overlap one another. I don't know exactly how the ...
0
votes
0answers
38 views

Getting wrong scale on georeferenced TIFF in QGIS?

I just georeferenced a map of Iceland using the ISN93 coordinate system. It looks like it was successful since when I transform some random coordinates to WGS84 and compare them to Google Maps it does ...
0
votes
1answer
42 views

GDAL-Georefrencing already Georefrenced single band Raster

I am trying to georeference already georeferenced single band raster data using GDAL with four GCP's. Input image is having Coordinate system GCS- WGS1984 (EPSG:4326). Following Command is run on ...
1
vote
0answers
40 views

How to convert an image file of lines into a lines shapefile in QGIS? [duplicate]

I need to convert the following image into a line .shp file. I can make the image into whatever type of image file it needs to be before converting. For context, I had started mapping an area by ...
0
votes
0answers
18 views

Image navigation/geolocation of geostationary MTSAT HRIT?

I am wondering if anyone has had any experience with image navigation of MTSAT HRIT images? My current workflow is: create geostationary scanning angle co-ordinates re-project to 0.025 degree ...
0
votes
0answers
27 views

Pixel Coordinate to latitude and longitude conversion [duplicate]

I have a map of part of Brazil. I want to find the latitude and longitude of some marked points on the map. Is there any way to find latitude and longitude of a point from its pixel coordinates given ...
0
votes
1answer
41 views

Colour-based shapefile generation from image [closed]

Suppose I want to extract the road network of Zambia, and I retrieved the following image: The conventional strategy would be to georeference it (e.g. using GDAL/QGIS) and then manually draw a line ...
2
votes
1answer
121 views

Georeference option not visible in QGIS 3.0 for French version

I am using QGIS 3.0 Girona Early Adopter Release. I used to use Raster-->Georeference--> ... to georeference images in QGIS 2.18 but now I can only see the interactive georeferencing option in my ...
1
vote
0answers
25 views

georeference in QGIS using Open Layers

I'm using QGIS to do georeference scan of the map. I have to do it in UTM zone 36N. The problem is I want to do it by creating control points and use background maps available in Open Map Layers (...
1
vote
0answers
40 views

QGIS 2.18 Georeferencer

I am using the Georeferencer plugin to overlay an older map over a OpenLayers google streetview map. I have set all my GCP points to be accurate however once I click the begin georeferencing button ...
0
votes
0answers
12 views

TransCAD spatial adjustment

I have a geographic file (.dbd) in TransCAD depicting bus lines and nodes. the layer should be for a city in Israel but when I load a basemap I find it very far away in Egypt. The city streets are ...
1
vote
1answer
55 views

Georeferencer - GDAL is missing on the QGIS 3

OS - ArchLinux 64bits SPECS - i3-3220 - 6gb ram QGIS 3.0.3 installed as follow. $ sudo pacman -S qgis gdal python-gdal python-psycopg2 python-owslib python-yaml python-pygments $ yaourt -S python-...
1
vote
0answers
34 views

Creating world files for a batch of aerial photos

I am looking for a way to geolocate a bunch of aerial photos by creating a world file per photo. The photos are taken in the same orientation and from the same altitude. The work flow would be to ...
1
vote
0answers
54 views

Make polygons the same spatial resolution as a GeoTIFF

I downloaded a GeoTIFF DEM from EarthExplorer and loaded it onto QGIS. This GeoTIFF is of the state of Florida. I have a shapefile (polygon) of the state and want to overlap it with the raster file so ...
1
vote
1answer
25 views

Error while updating feature information to geoserver using OL3

I am trying to update feature information of wfs feature to geoserver using WFST in ol3. I am getting the below error in the response <ows:ExceptionReport xmlns:xs="http://www.w3.org/2001/...
0
votes
1answer
40 views

.Tif to .GeoTiff Scaling issue using GDAL

I was trying to georeference a .tif file generated from a matplotlib output using GDAL's python bindings and it seems to be off-scale. My objective was to create a geotiff file from the output of a ...
0
votes
1answer
35 views

Difference of georeferenced and ungeoreferenced map in AutoCAD?

Can somebody please explain the difference of an ungeoreferenced scanned map and a georeferenced one in AutoCAD?
-2
votes
1answer
43 views

Georeference multiple jpg through GDAL [closed]

Is there any way to automatically georeference hundreds of jpeg images with known corner coordinates in a text file?
0
votes
0answers
30 views

Calculating X_Source and Y_Source fields for raster georeferencing in ArcMap?

I am georeferencing 150 rasters. For each raster, I have a Polyline (square) where I take coordinates from each vertex to add the control points. I spend 15 minutes to georeference each raster. Each ...
5
votes
2answers
272 views

Georeferencing old map in QGIS?

I have an old map over a part of Laos and wondering how do I georeference the map with the help of the Grid lines and other Longitude and Latitude information on the scanned map? I have searched for ...
2
votes
0answers
90 views

Georeferencing Cadastral map in DWG using AutoCAD Map 3D?

I want to georeference a cadastral map in dwg format. I have the lat-long of 3+ points on the map but do not have the scale. I tried "Set Location" in Autocad Map 3D but it references using the lat/...