2,010 reputation
518
bio website
location
age
visits member for 2 years, 1 month
seen 19 hours ago

Mar
16
comment How do I add coordinates to a polygon layer to be able to sort the polygons from north to south in QGIS?
OK, for that (in hindsight) in the original file of the polygons, I create an explicit index column. Using the FieldCalculator, I make a new text column called 'index' with the value of the row number $rownumber from the record section of the function list. That give 1, 2, 3, etc. When you carry out the create centroids step, that index (and all other attributes) will be inherited into the attribute table of the new shapefile. You could then create a 'Join` LAYER|PROPERTIES|JOINS based on the index. Reopen the attribute table and you will see new columns with the values from the centroid.
Mar
14
revised How do I add coordinates to a polygon layer to be able to sort the polygons from north to south in QGIS?
additional
Mar
12
answered How do I add coordinates to a polygon layer to be able to sort the polygons from north to south in QGIS?
Mar
12
comment Does OpenStreetMap have property boundaries?
In Australia, it seems that Google ingested the Digital Cadastral Database (DCDB). Usually you have to buy it, although not a big cost to Google I spose. A new development is that Land and Property NSW is making the data free and much more accessible. See globe.six.nsw.gov.au
Mar
11
comment Does OpenStreetMap have property boundaries?
Which country are you interested in?
Mar
11
comment Best, fast and easy way to print multiple polygons?
Credit for Atlas is due to the outstanding work of the QGIS dev team...
Mar
11
comment How to change a CSV layer attribute value from text to number - once again?
I am not clear what the problem is that you are encountering. I don't use csv-t at all and successfully import csv. If I have troublesome files I view and edit them in Notepad++.
Mar
11
answered QGIS 2.0 Automatic generation of a vector layer out of a point layer
Mar
11
comment QGIS 2.0 Automatic generation of a vector layer out of a point layer
OK, if you have the data "pipe AB goes from hopper A to B" then this is an index. You can avoid MMQGIS and go straight to the Points to Paths plugin. If the index is indeed AB then you will likely need to amalgamate the values A and B on the target points (hoppers?) so that the same value "AB" is on each of the ends of the new line. Note that the source data may have been directional, i.e. line 1 started at A and ended at B, so really the index needs to be 1A 1B, but you may not be trying to reproduce the directional nature of the line? In GIS lines are directional but points are not.
Mar
10
answered QGIS 2.0 Automatic generation of a vector layer out of a point layer
Mar
10
comment Best, fast and easy way to print multiple polygons?
Are you familiar with the Atlas feature in the QGIS Print Composer? You would create a specific layer based on your Split Vector Layer to guide Atlas.
Mar
7
awarded  Yearling
Mar
6
comment Calculate length of line across zones with at least m accuracy
Recently the SSSI published a webinar on the prospect of a new generation datum for Australia, i.e. one that is constantly being updated. sssi.org.au/contents/742/cat/403/region/1.html The parts about NZ will make you realise what it is all about. You will have to supply some detail to view the 3/4 hr webinar here www4.gotomeeting.com/register/689873399
Mar
4
comment Snap points to line and calculate chainage using Open source GIS
Also v.distance from the processing toolbox but I can't get it to run on my machine.
Mar
4
comment Snap points to line and calculate chainage using Open source GIS
I deleted my answer. This is not easy to do in QGIS. Here is a lead - gis.stackexchange.com/questions/59169/…
Mar
1
comment QGIS 2.0 Raster Interpolation
Did you look at the properties of the Raster Layer? There are two tabs, General and Meta~. Do they give an clues?
Mar
1
revised Calculate length of line across zones with at least m accuracy
added 581 characters in body
Mar
1
answered Calculate length of line across zones with at least m accuracy
Feb
27
comment Non-deletion of nodes in QGIS
Have you used the tool Check Geometry in the Vector menu?
Feb
26
awarded  Notable Question