All Questions
Tagged with png georeferencing
11 questions
0
votes
1
answer
358
views
How to georeference a PNG in ArcMap without losing transparency?
I am creating a geologic map in ArcMap and I want to georeference a PNG of my topographic contours. I need to use a specific set of contours, so I cannot generate them within Arc. I have PNG file that ...
- 1
0
votes
1
answer
890
views
Georeferencing PNG from bounding box in GDAL?
I have an image in PNG format and bounding box coordinates (upper left, lower right). How do I georeference it using command-line interface tools such as GDAL (or Python if it is not possible)?
In the ...
- 969
2
votes
1
answer
4k
views
Georeferencing of PNG and Convert to TIFF using Python
I have a PNG image which I am trying to georeference using four corners of coordinate information of the defined input image.
When I am trying to convert PNG to TIFF, I am getting 3 bands (R,G,B) ...
- 141
1
vote
1
answer
1k
views
Png, prj, pgw same name, but png doesn't show up after loading. What SRC to take?
someone gave me a dataset with the three types of files, but when I load as a raster the png.files it doesn't show up on the maps. They ask me what SRC to take and I don't really know which one to ...
3
votes
1
answer
571
views
What CRS to use for cylindrical raster world map?
I've drawn a cylindrical world map for a fictional planet. Exported it as png and scaled it, so one pixel corresponds to one km at the equator and from north to south pole.
I tried several ...
- 95
2
votes
2
answers
3k
views
Georeferencer QGIS not working?
I am trying to georeference a .png file. After inserting all the data I get the following error
"Transform Failed: Failed to compute GCP transform: Transform is not solvable."
What can be ...
- 483
1
vote
0
answers
672
views
How to make a .pgw file for a .png depicting a 2D profile
My question is more of an inquiry about whether I am trying to do is possible. I would like to reference an image depicting a 2D Georadar profile. I know that world files are usually used for ...
- 11
2
votes
1
answer
5k
views
How to insert georeferenced PNG into correct location in AutoCAD Map3D?
I have a PNG of building plans that I will need to digitize in AutoCAD Map3D. I have georeferenced the PNG in ArcGIS, which has produced a world file (.pgwx) in the same directory in which the image ...
- 1,195
0
votes
1
answer
403
views
Georeferencing PNG against Google maps with OpenLayers plugin
I am trying to georeference blueprints to the footprint of a building. I'm using the Google Satellite image from the OpenLayers plugin to do this. The blueprints are rotated about 30 degrees. When I ...
- 495
2
votes
1
answer
6k
views
How can I correct a .pgw file for a PNG image?
I have a PNG file and I need its .pgw file to be set with NAD 83 as the projection. I have created a .pgw file:
799
0
0
-799
-122.562
37.1946
However when I open the PNG in QGIS or ArcMap 10.2 it ...
- 1,447
3
votes
1
answer
2k
views
Automatically georeference hundreds of png files based on polygon vector coordinates
I have 1000 polygons in my shapefile. I also have 1000 PNG files. Do you think it is possible (based on a common attribute), through a script or something, to assign each of those PNG files to a ...
- 273