5,086 reputation
1249
bio website underdiverwaterman.com
location Arusha, Tanzania
age
visits member for 3 years, 2 months
seen yesterday

Wildlife survey specialist with interest in GIS and statistics, based in Arusha, Tanzania.

Work mostly with QGIS, R ... getting away from using ArcGIS and Excel!


Jan
18
revised How to open a Shapefile in R?
Updated for best practice in interpreting factors and spatial objects.
Jan
18
comment How to open a Shapefile in R?
@Jeffrey, readOGR is definitely the better way to go - see some discussions on later R questions here on gis.SE. Good point on factor coercion; will update with nested as.character to get around the problem.
Jan
15
awarded  Nice Answer
Jan
13
reviewed Approve mapwingis tag wiki excerpt
Jan
13
reviewed Approve How to load postgis layer to map control with mapwingis?
Jan
10
comment Standard colour ramp for wave height visualisation
Really interesting question. What would wave height communicate to the viewer? Do you need to show intervals ('calm', 'choppy', 'terrifying') or a continuous scale?
Jan
9
reviewed No Action Needed Best way to have title which includes dynamic text of a layer name?
Jan
9
reviewed Reject For loops + boxplot for raster
Jan
9
revised How to get latitude /longitude in Degree Minute Second (DMS) using QGIS field calculator?
Corrected negative-vals issue.
Jan
9
comment How to get latitude /longitude in Degree Minute Second (DMS) using QGIS field calculator?
Aaargh. The pitfalls of insufficient testing ... and here's me working in the southern (negative) hemisphere, too. Updating shortly.
Jan
9
comment How to get latitude /longitude in Degree Minute Second (DMS) using QGIS field calculator?
Added an example; this works in QGIS 2.6 (and probably anything 2.0 and up) but there may be more elegant formatting functions available now.
Jan
9
revised How to get latitude /longitude in Degree Minute Second (DMS) using QGIS field calculator?
Updated for DM
Jan
6
comment Unable to run R in QGIS 2.6 - rgdal unavailable for R 3.1
@MarkRuddy, could you edit your question and paste the actual error lines from the R script output (from QGIS Processing) when you run it?
Jan
5
comment Automated detection of tracks
Ragnvald, very interesting question - would be interested to know (perhaps click 'edit' and update your original question): (1) do you want a purely automated system for detection? (2) Do you want to actually map the area of the tracks, or just know if they are there (presence / absence)?
Jan
5
revised Unable to run R in QGIS 2.6 - rgdal unavailable for R 3.1
added 12 characters in body
Jan
5
answered Unable to run R in QGIS 2.6 - rgdal unavailable for R 3.1
Jan
1
awarded  Nice Answer
Dec
31
comment Finding a vertical kilometer between 2 points with specified distance in QGIS
Welcome to GIS.se! You should explain your problem a bit more (maybe some background as to 'why') and what kind of solution you're looking for - there could be an infinite number of points that satisfy your question (if there is any possible solution), so probably you need to define the problem better.
Dec
26
reviewed Reopen Mirror two data frames
Dec
23
comment Can't install QGIS 2.6.0 need SQlite3 on OSX Yosemite
Have you posted this on the QGIS user forum? The mac QGIS maintainer is active there and he or others are likely to help.