Linked Questions

1
vote
1answer
240 views

Points and polylines representation of coordinates in QGIS? [duplicate]

I am working on the "Jakarta Bay", Indonesia. I have a shapefile for the Indonesian coastline and I clipped my region of interest using an appropriate polygon. I also have points that are located ...
1
vote
0answers
59 views

Changing CRS of downloaded shapefile using QGIS? [duplicate]

I have looked through all the other questions which might have received answers to the question I am currently posting. However, after trying all their recommendations I am still stuck with the same ...
0
votes
0answers
40 views

Duplicate layer, but in different CRS? [duplicate]

I inherited some data that lines up correctly on the map, but in face are in different coordinate reference systems/SRID. Here is a screenshot example: The CRS of the green layer is: EPSG: 4326 ...
1
vote
0answers
40 views

How to work with projections - shapefiles indicate all shapefile are located south of North Africa [duplicate]

I am trying to follow the standard QGIS tutorial for Swellendam based on QGIS version 2. Specifically the chapter which address coordinate systems If I go to a layer and try to re-project it from WGS ...
0
votes
0answers
37 views

Understanding QGIS reference frame issue? [duplicate]

I just changed my project coordinate reference frame to WGS 84 EPSG:4326. Additionally, I set the coordinate reference frame for each layer to EPSG:4326-WGS 84. However, the two layers don't line up. ...
8
votes
2answers
850 views

Seeking Historical GIS datasets?

I've been looking for a while for Historical GIS datasets. In a lot of places (also in answers here at Stack Exchange), people are referring to a great dataset at ThinkQuest, which contains shapefiles ...
1
vote
1answer
1k views

QGIS layer.geometry.intersection() not finding intersections between layers

I wrote the following python script to find intersections between two layers, and although the two layers have intersections, it returned an empty list. intersections = [] for a in layer1.getFeatures(...
2
votes
1answer
176 views

QGIS not saving CRS changes

I'm trying to save a shapefile that came in EPGS:3005 coordinate system, so all the shapefile polygon points have 6 or 7 digits before the decimal point (e.g. 1223282.8231), and I want to save/convert ...
2
votes
2answers
49 views

Get DD Lat and Lon from CRS EPSG:3111 - GDA94

I have a shapefile in CRS EPSG:3111 - GDA94 that I am trying to generate Lat and Lon, however when I use the field calculator and try to populate the lat lon I am getting values that I can't use as ...
1
vote
0answers
72 views

Need to change projection and data to match 2nd shapefile

I have two files I am using, one is census tract data with prj: GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", SPHEROID["GRS_1980",6378137.0,298.257222101]], PRIMEM[...
1
vote
0answers
42 views

Large offset between two identical vector layers

I want to have a dxf layer to overlay another layer. The dxf layer is already saved to a shapefile with the needed crs. The layer has a large offset and nothing happens when I set the crs to the ...
1
vote
0answers
33 views

Reprojecting a SHP in QGIS to used it in ERDAS

I´m trying to created a AOI in ERDAS with a shapefile, but this shapefile had a projected system different to system that my image has, because of that I changed the projected system of the shp in ...