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seen Mar 27 at 14:09

Write enthusiastic but inelegant code in R, Perl, VBA etc


Mar
12
comment Conversion of Latitude/Longitude to different map projection
Does this question help?
Mar
11
awarded  Yearling
Mar
8
comment How to infer a relationship between two spatial points using R
This does strike me as being more of a statistical issue rather than a GIS question. It involves GIS but the core problem is trying to prove/disprove your hypothesis. I would try Cross Validated instead.
Feb
20
awarded  Nice Answer
Jan
13
comment R or QGIS? Measuring elevation at points on DTM surface
Thanks for that Oscar, both those functions look promising but I can't get them to work with rgl.
Jan
12
comment R or QGIS? Measuring elevation at points on DTM surface
I don't have a list of coordinates defining the points because the points are only discovered from a visual inspection of the plot itself. So I am working backwards from what I would usually be doing. Thanks for the tip on raster.
Jan
12
comment R or QGIS? Measuring elevation at points on DTM surface
The pointer to extract is useful, thank you. Your prediction is incorrect, though only because I did not phrase the question clearly enough. I want to find points that are not necessarily the highest points of the hills or lowest points in the valley, but rather locations determined by local features. E.g. a valley bridge compared to a road junction on the hill. For that reason finding local maxima and minima is probably not going to help. As rgl does allow plot interaction (rotation with mouse) I was hoping there might be a non-obvious way of inspecting/accessing points on the plot.
Jan
12
revised R or QGIS? Measuring elevation at points on DTM surface
Edited text to make purpose of height measurement clear
Jan
12
asked R or QGIS? Measuring elevation at points on DTM surface
Jan
11
comment R, rasterVis and RGL: how to prevent reflective surfaces?
I have experimented with this and it definitely makes a better image. Thanks to yourself and @Jeffrey Evans for the education.
Jan
11
accepted R, rasterVis and RGL: how to prevent reflective surfaces?
Jan
10
revised R, rasterVis and RGL: how to prevent reflective surfaces?
added 133 characters in body
Jan
10
comment R, rasterVis and RGL: how to prevent reflective surfaces?
I tried it but was surprised by the result, so I wanted to check. It's... interesting, but not quite what I wanted for a realistic topological plot. I guess there is more to discover in terms of tweaking.
Jan
9
comment R, rasterVis and RGL: how to prevent reflective surfaces?
<face-palm> I searched for shiny and shininess in the rasterVis docs, didn't occur to me to check the rgl docs! Setting shininess to its max value of 128 helps, but it's still reflective. Luminance seems to have no real effect and isn't explained in the docs?
Jan
9
asked R, rasterVis and RGL: how to prevent reflective surfaces?
Jan
7
comment unionize intersections of merged polygons
Re gUnion, try it with your data and see. It's the only way.
Jan
7
revised unionize intersections of merged polygons
added 64 characters in body
Jan
7
comment unionize intersections of merged polygons
Well, it would be kinder to put your code in the question, rather than on GitHub. On the shapefiles, my point is that there is no unambiguous link to the shapefiles, just a page on which there is a further menu or a "download" link that just takes you to another page. However, having taken another look the Marine Regions site again, it does seem difficult to get a direct link. Perhaps better in such circumstances to mock up some fake data as above. I find that when I get stuck in GIS, creating my own sp objects from scratch often shows me the way.
Jan
7
revised unionize intersections of merged polygons
added 135 characters in body
Jan
5
revised unionize intersections of merged polygons
added 62 characters in body