Linked Questions

1
vote
1answer
44 views

Why do I get coordinates in QGIS3 as nnnnnn; nnnnnn instead of Lat/Lon when I upload a shapefile supposedly projected in WGS84 [duplicate]

I received a couple of shapefiles made in France supposed to be projected in WGS84. When I upload them to QGIS3, it recognizes them as WGS84. However, their coordinates are displayed in a strange ...
2
votes
2answers
4k views

Interpreting .ASC/LiDAR Data?

I'm a complete novice to the world of GIS. I'm involved with a project which requires LIDAR data to be imported into CAD software. When I go to the geostore, which contains LIDAR survey data ...
1
vote
2answers
52 views

Difference between EPSG:4326 and EPSG:32637?

I'm exporting data from a program into a .csv for RStudio, which will then go into ArcMap. I haven't done this before and I've been given two projection options which are: WGS 84 [EPSG:4326] WGS 84 / ...
1
vote
0answers
48 views

How to find lost information about the projection? [duplicate]

I have problems to find lost projection and hope someone could give a hint. I think there is no way to find the projection automatically so I did try a semi-automatic approach shown below. My ...
2
votes
1answer
42 views

Defining projection of raster file which lacks prj file [duplicate]

I have two raster data. They must cover each other. My problem is, one of them doesen't have prj file, therefore I don't know what is the projection of this one. I can not cover this raster with the ...
3
votes
2answers
625 views

Seeking command line tool for converting projection in .prj and GeoTiff to EPSG codes [closed]

Is there a command line tool to convert a shapefile projection in the .prj file into corresponding EPSG code? I know that there is website http://prj2epsg.org/search for doing this online, but I ...
61
votes
7answers
8k views

What strategies, criteria, or rules to use for selecting coordinate systems?

What strategies, criteria, or rules do you use for selecting coordinate systems for (a) storing, (b) analyzing, and (c) displaying GIS data? (I humbly offer my reply to a related question about ...
3
votes
2answers
198 views

Defining and changing unknown CRS into WGS84

I came across a shapefile (no information available about the original CRS) with some unknown Reference System (City of Stuttgart in Germany). Example of coordinates looks like 3465878, 5482952. I ...
0
votes
2answers
505 views

Aligning two datasets in ArcMap?

I am running into an ArcGIS 10.1 problem with two data sets matching up, and although it seems like a coordinate system problem, it has me stumped. One data set is a GPS track (Garmin Etrex Legend ...
2
votes
0answers
260 views

Reverse parameters of a projection map / guess which geographic project is used

I'm user of a soaring simulator named "Condor Soaring". This simulator is at the center of a community of enthusiastic people who build sceneries (landscapes) which represents quite accurately real ...
0
votes
0answers
27 views

Two layers, same coordinate system, wont show up [duplicate]

I have vector two sets of vector layers that won't show up together. One set shows up together and the other set together etc but they are of the same area. The layers I was given did not have a ...
0
votes
0answers
28 views

overlap an unknown shapefile to another shapefile with known coordinate system [duplicate]

I am writing as I have two shapefiles, one with an undefined projection/ coordinate system and another shapefile with a defined one. When I add them in gis, one shapefile is shown in another place ...
0
votes
0answers
11 views

Determine projection system [duplicate]

I have standalone program that based on geodata generates zone coordinates. I dont know what projection system is used but I have a lot of example data. All of them are in Poland i.e. lon lat lon1 ...
1
vote
1answer
172 views

Find CRS/Projection that matches a map [duplicate]

I have been given some utility plant maps for a project my company is working on but they don't come with a projection listed (they are in PDF format, but I will strip them down, make them transparent,...
1
vote
0answers
15 views

Solving an Undefined Projection for US Counties (1990) [duplicate]

After inserting the cs99_d90.shp file obtained from the 1990 US Census, I received an error message claiming: The following data sources you added are missing spatial reference information. This ...

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