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 Yearling
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Dec
5
answered Can GDAL extract a raster window from disk without loading the whole file to memory?
Dec
5
answered Finding the area of polygons within other polygons in R
Dec
5
comment Finding the area of polygons within other polygons in R
or use rgeos::gArea
Dec
5
answered Determining Min and Max elevation in Python using GDAL?
Dec
2
revised Wrap a raster at the 180° meridian
added 1 character in body
Dec
2
answered Wrap a raster at the 180° meridian
Nov
24
comment Sharing a QGIS project
No simple way, this is one of those painful ESRI "features" that QGIS decided to support. You can have in-memory layers for vectors, but it's not intended for self-contained project files afaik. FWIW, Manifold's project files operate standalone by default, it's hard to imagine living without it once you've used it.
Nov
23
comment Extracting multiple values from list and storing them in data frame using R?
paste(sapply(mylist, function(x) x$perim), collapse = ",") assuming 1 row each
Nov
19
comment What is faster - a matrix, raster or a dataframe?
It depends, I don't think it's possible to answer this question as it stands. This really needs more detail, and especially a working example. Also things keep changing, where it was slow to use data.frame now it's much better with dplyr::data_frame - but this is just one possible nuance among many.
Nov
18
answered Irregular XYZ point data to raster (TIF) - LASTools alternative?
Nov
11
comment Error in converting SpatialPolygonsDataFrame to Data Frame, R Script in QGIS
Oh, is that [[X]] a funky "in-QGIS" syntax? Why not just as.data.frame(Layer) and work with the normal data.frame?
Nov
10
comment Error in converting SpatialPolygonsDataFrame to Data Frame, R Script in QGIS
Use fortify: github.com/hadley/ggplot2/wiki/plotting-polygon-shapefiles
Nov
10
awarded  Yearling
Nov
10
comment How to test polar stereographic projection for a specific longitude intersection?
I don't have an answer, but if you just want to do it use the transformation functions in proj4 or rgdal.
Nov
6
comment Getting origin as long, lat in GDAL without knowing EPSG
new_cs should be the string for long-lat, here it's the same as the source
Nov
5
comment Getting origin as long, lat in GDAL without knowing EPSG
Please list what you did in python, and what you got.
Oct
22
comment Improves performance on R working with raster files
fwiw, try using basename(all.files[i]) rather than substr.
Oct
22
comment How to make a wedge shapefile in R?
Very nice indeed!
Oct
5
answered How to make a wedge shapefile in R?
Sep
17
comment How do you geocode addresses in R?
Also dismo::geocode - nice because dismo also has gmap which gives raster objects.