1
vote
0answers
73 views

four color theorem for QGIS 2.0 or Leaflet?

I recently looked at some other posts relating to this topic but as far as I can tell there is currently not a working plugin or script for QGIS 2.0 to achieve a four color theorem for styling polygon ...
2
votes
0answers
108 views

How to add an offset to a GeoJSON layer in Leaflet?

Using the example GeoJSON tutorial code at leafletjs.com. Change the myLines variable so that the two lines overlap, but run in opposite directions as follows: var myLines = [{ "type": ...
2
votes
0answers
76 views

QGIS 2.0 How to copy the color styling to a color column in a layer's attribute table

I have a polygon layer in QGIS that I have applied a random color style to each polygon. Under Layer Properties -> Style I selected a Categorized style and then generated a random color ramp. I added ...
1
vote
2answers
236 views

qgis, simplify parcels to share borders

Is there a QGIS plugin or other method that simplifies parcels to share a common line(border)? I'm pretty sure I read about this some time ago. Couldn't find anything here or elsewhere. I'd like to ...
0
votes
0answers
183 views

Why do my maps exported in WGS84 have large coordinates?

I'm using QGIS to export map layers as GeoJSON for use in Leaflet. The map file CRS is WGS84(EPSG4326) and I'm exporting it as such. The issue is the exported coordinates are still too large: [ ...
1
vote
1answer
817 views

How to get correct format of coordinates for export to geojson from QGIS?

I've created a custom map in QGIS with a few shapefiles. I'm using leaflet.js to render the map and the shapefile points and everything lines up correctly. The CRS is set to 4326. When I export the ...
0
votes
1answer
208 views

QuantumGIS EPSG:3857 doesn't match with leaflet

Leaflet documentation said that they has EPSG:3857 as default projection. Using QGIS with open layer plugin, I point to a location to find it's coordinate. I used EPSG:3857 in QGIS as well. The ...
1
vote
0answers
119 views

Creating polygons for a choropleth map using PostGIS

I have a grid of points, each with a value to it as shown in the image below. The data was retrieved from PostGIS and rendered in Quantum GIS. The final result should be a polygons of a choropleth map ...
6
votes
2answers
776 views

Tilemill Dynamic Tile Generation

I have recently used Tilemill and I wish to implement it for dynamic tile rendering.As I've seen an CartoDB doing in cloud system,they can query & generate dynamic tile for request with UTFGrid. ...