All Questions
23 questions
1
vote
0
answers
392
views
Georeferenced images in ArcGIS are projected wrongly in QGIS and other GIS
I am working on a big project that includes georeferencing over 850 historical maps in the Netherlands. We're doing this with a small team, with each of us taking certain municipalities.
Since we all ...
- 805
1
vote
0
answers
136
views
Visualizing SAR images of moon
I have SAR images of a region on the Moon in GeoTIFF format.
When opened in ArcMap, an image looks like:
With the metadata:
How can I geo-reference them to visualize properly?
I also have an ...
- 21
2
votes
1
answer
523
views
Visually correcting systematic shift between two geodatasets using ArcMap
I often have two datasets that are obviously not georeferenced correctly. Most of the time a simple translation (shift by x/y) could fix this.
Is there an easy way to do this e.g. by specifying one or ...
- 2,554
0
votes
2
answers
508
views
Assigning coordinate system to ungeoreferenced CAD Drawing while maintaining CAD shape and size using ArcMap
I am using ArcMap 10.8.1 for this project. I am attempting to bring a small town's CAD map of their streets and buildings into ArcMap and then will work on converting some of this data to shapefiles.
...
- 304
0
votes
3
answers
173
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 ...
- 139
0
votes
1
answer
219
views
Specifying coordinate system
I was given a point shapefile that does not have coordinate system. So, I need to specify it. I was told that this have following reference system.
Coord. Sys. – 17 South (UTM)
Units – US Survey ft
...
- 55
2
votes
2
answers
2k
views
Using World Files to Reference Raster Datasets in ArcMap
I am trying to georeference a simple raster image using a world file I was supplied with, however I am struggling to associate the world file with the image. I have read up on it, it seems that in the ...
- 167
1
vote
1
answer
76
views
Reading pixel numbers of georeferenced raster in ArcGIS for Desktop?
In the following map, I've georeferenced the pauliRGB.bmp of an ALOS-PALSAR image in order to be able to exactly recognize the number of pixels which San francisco is surrounded by. I mean, I want be ...
- 731
1
vote
2
answers
408
views
How to project MODIS blue marble image?
I have combined MODIS blue marble images into a mosaic, a screen shot of the mosaic raster image with its source info opened in ArcMap is attached. The file source shows that it has angular ...
0
votes
1
answer
189
views
Determining coordinates for CAD file using ArcGIS for Desktop?
I have a CAD file of a building and I want it to be replaced on Google Maps with coordinates.
The DXF-file is on a local coordinate system (undefined). I convert this file to SHP-file for editing. I ...
- 1
1
vote
1
answer
619
views
Overlaying two raster data sets in ArcGIS for Desktop?
I am using ArcGIS 10.3
I have 2 raster datasets with different coordinate systems, but they are the same county (just different databases). When I add them to the same map layer they are far away ...
- 103
1
vote
1
answer
511
views
Georeferencing PNG in ArcMap based off of data frame corners?
First, in Arcmap I set the data frame exactly equal to the page layout (2'hx3'w) and exported my hillshade, DEM, etc one after the other from layout view so that they were all the exact same size and ...
- 11
2
votes
0
answers
188
views
Visio to CAD to GIS, How to geo-reference? [closed]
I have CAD file converted from a MS Visio diagram, representing power line cables. Data source has no spatial reference. I converted into shapefile and now I am trying to georeference the vector ...
- 527
4
votes
1
answer
326
views
Choosing projection to georeference historical map to?
I'm using ArcGIS.
I have a historical map from 1884. It has bathymetry information which I would like to compare to modern bathymetry models with as much accuracy as possible. I don't know what ...
- 171
0
votes
1
answer
104
views
Identifying coordinate system of Wetterzentrale maps?
I'm trying to georeference two maps from wetterzentrale in ArcGIS Desktop.
In what coordinate system are those maps created?
- 9
3
votes
1
answer
692
views
Unknown Spatial Reference after Georeferencing in ArcMap
I am trying to georeference an image base on another *.tif, after rectifying i still have my Image as unknown spatial reference.
Does somebody know how I can fix it?
- 31
2
votes
0
answers
606
views
Whats an appropriate map projection for georeferencing aerial photos? [closed]
I have some aerial photos that were shot from directly overhead a 5x5 mile property. They were then mosaiced to create a continuous overhead tiff of the entire property.
I am now going to ...
- 1,786
2
votes
1
answer
359
views
How to georeference a map - which is in projected coordinate system - using geographic lat long? [duplicate]
We have some hard copy maps which were projected in Gauss Kruger coordinate system (in the legend it has been mentioned). But, the coordinates were given in Geographic lat long (Beijing 1954). In ...
- 1,449
1
vote
2
answers
423
views
Determining projections for 10,000+ shapefiles covering 3 UTM zones
I was handed a ton of property files with no projections attached but was told they are all in UTM zone 21S. Well once I merged them all together and projected them I realized that the data covers 3 ...
- 111
1
vote
2
answers
718
views
Why do MGI and WGS 84 data not line up in ArcGIS for Desktop?
When i reproject raster from MGI 6 zone to the WGS84 it makes a mistake (it is moved for 380 m )See example below:
I know that the problem is in MGI 6 projection (it is not accurate),but I do not know ...
- 93
8
votes
2
answers
2k
views
Georeferencing Photos With No Spatial Reference?
I have about 100-200 field ground shot photos I would like to overlay in ArcGIS 10 that have no spatial information which I need to somehow develop using a photogrammetric formula. The camera was ...
- 280
4
votes
2
answers
757
views
Creating georeferenced and projected data from hand-drawn map using ArcGIS Desktop?
I am preparing datasets for students in a spatial statistics course for a module on spatial autoregressive models. We will use ArcGIS 10.1. The first dataset will correspond to a mythical pre-...
- 49
11
votes
2
answers
86k
views
Coordinate system and projection for georeferencing Google Maps image in ArcGIS Desktop?
I have saved Google Maps image (not Google Earth) of area at latlon(17.692437,83.218689) by some method in jpeg format. It is an exact snapshot of the Google Maps. Now I need to geo-reference it to ...
- 653