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 Yearling
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Mar
11
awarded  Yearling
Mar
4
comment Join spatial point data to polygons in R
Then perhaps you should answer your own question with your solution. Remember, good answers are what this site is all about.
Nov
5
comment What can I use for Territory Management in Canada?
You can use shapefiles in Tableau - I suspect getting that to work would be less trouble than trying to get decent interactivity in R.
Nov
5
comment What can I use for Territory Management in Canada?
Something like Tableau? I like R, but sometimes you need a different tool.
Sep
24
awarded  Autobiographer
Sep
14
awarded  Popular Question
Jul
7
comment Using R to calculate the area of multiple polygons on a map that intersect with another overlaid polygon
Thanks. I believe there is a require(scales) call in there that will do the trick.
Jul
2
awarded  Curious
Jun
25
awarded  Notable Question
May
28
awarded  Notable Question
Apr
22
answered Problem with merging and dissolving a shapefile in R
Apr
17
comment Problem with merging and dissolving a shapefile in R
Use str() to get a better view of the structure of your objects. I haven't looked at it closely but if you convert your SpatialPolygons object to a data frame (which is not a spatial object) I would expect you not to be able to use unionSpatialPolygons. Generally people convert to a df to plot using ggplot towards the end of the workflow. Incidentally if the shapefile data is publicly available a link to the shapefiles would help others help you. Also, if you provide your code in one block that others can copy and paste, it helps a lot.
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