3,370 reputation
1416
bio website confound.me.uk
location Caversham, Reading, England
age 73
visits member for 2 years, 11 months
seen 20 hours ago

Nick Hopton is a retired ancient person who's background is in quarrying and ready-mixed concrete. His ambitions include learning more about how to make good maps and becoming an actuarial nightmare for his pension fund.


1d
comment Georeferencing image using QGIS?
Is the map image available somewhere for downloading and which coordinate reference system do you wish to use?
Jul
9
answered Creating a DEM from CAD contour polylines
Jul
2
awarded  Curious
Jun
30
awarded  Popular Question
Jun
21
comment How to load Ordnance Survey OpenSpace in QGIS?
I still believe it can be done. Your bounty expires in very soon and when this happens I'll start another one running with 500 reps.
Jun
11
comment How to colour contour lines in .shp file when the lines are not meeting in QGIS?
Am I right in thinking you wish to have depths of (say) 0 to 10 metres in one colour, depths of (say) 11 to 20 metres in a different colour, and so on? Like this: dl.dropboxusercontent.com/u/45121071/classified.jpeg
Jun
5
comment How to automatically draw lines with a given angle from one single point in qgis 1.8?
Oh you're right, it's not working properly. Best to create your own line memory layer and use this, use polar/radial and press 'clear list' after drawing a line. This will keep the starting vertex intact. I've never had this problem before.
Jun
4
answered How to automatically draw lines with a given angle from one single point in qgis 1.8?
Jun
4
comment Digitizing with OpenLayers Plugin seems incorrect
Using QGIS 2.3.0-Master I was having the same problems. Until I did an update ten minutes ago.
May
9
comment How to Polygonize a polyline shapefile in QGIS 2.2?
The fact that some of the lines in your shapefile are being converted to polygons suggests that 'Polygonize' is working as it should. In which case it's most likely the problem is with your line shapefile. Would you try polygonizing this test shapefile? dl.dropboxusercontent.com/u/45121071/laxlines.zip
May
5
answered Output map of only 50m-100m contours
Apr
22
comment Merge images first, or georeference first?
Odd that they are not already georeferenced. The NLS site credits David Rumsey with scanning and georeferencing. N.
Apr
21
comment extract shapefile attributes from raster colors
In the raster image are the pixel values consistent? For example, do all of the 'green' pixels have exactly the same values? N.
Apr
17
comment How to go with…somewhat complex geological maps in QGIS?
I noticed a thread on the QGIS User list the other day about 'Polygonize' and OS X. osgeo-org.1560.x6.nabble.com/… Not something I know about I'm afraid.
Apr
17
comment How to go with…somewhat complex geological maps in QGIS?
Until lately I was getting messages similar to yours with 'Polygonize', I think this was something to do with the version of Shapely installed on my system. But the problem has disappeared in recent upgrades. Pleased to hear that it's working for you too. N.
Apr
17
comment How to go with…somewhat complex geological maps in QGIS?
Would you check the Polygonizer using this shapefile? dl.dropboxusercontent.com/u/45121071/laxlines.zip
Apr
17
answered How to go with…somewhat complex geological maps in QGIS?
Apr
11
comment How to apply a specific Rendering to an Image and export to JPEG?
Does this work for you? It was the first thing I tried but but the output image was either all red or all green depending on the ordering of the items in the text file.
Apr
4
revised How to generate Non-smooth/crude Contour Lines in QGIS?
added 124 characters in body
Apr
4
answered How to generate Non-smooth/crude Contour Lines in QGIS?