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bio website staff.acecrc.org.au/~mdsumner
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visits member for 4 years, 1 month
seen 31 mins ago

R, Manifold, GDAL, also interested in Python, topojson/D3 and NetCDF/HDF


Sep
25
comment How to open a raw binary raster in QGIS or R
Or more directly in R: gis.stackexchange.com/questions/14848/…
Sep
25
comment How to open a raw binary raster in QGIS or R
Use VRT: gdal.org/gdal_vrttut.html See ".vrt Descriptions for Raw Files"
Sep
25
comment How to convert raster to im object for point process model covariate in R
that's not right, "r" there is a single RasterLayer. There's no multi-layer "im". The issue is that it used to work afaik, but not today. I'll investigate.
Sep
25
comment How to convert raster to im object for point process model covariate in R
Actually I thought it already was there: gis.stackexchange.com/a/73357/1204 need to check.
Sep
25
comment How to convert raster to im object for point process model covariate in R
It's because you as.im a character string. Converting to im is easy enough, but I don't want to write it just now. I can dig it up later. We should get the method added to raster.
Sep
24
awarded  Autobiographer
Sep
22
comment Subset netCDF based on last valid variable by level
Code please - there are at least four R packages on CRAN with independent read tools for NetCDF. Also the usual info such as OS and R and package versions is important.
Sep
20
answered What kind of geo information is stored in a GeoTIFF
Sep
19
comment Determining unknown Coordinate System using QGIS?
You should show us the metadata, it's not coordinates you are after but a "coordinate reference system", like a PROJ.4 or WKT string.
Sep
16
comment How to open and plot Globcolour chlorophyll image in R?
Working with L3 bins is relatively difficult if you don't understand it. You should study the materials and forums posts on it here oceancolor.gsfc.nasa.gov, explore the blog posts you are quoting more, and ask more specific questions on aspects you have problems with. I have been working with the oceandata L3 bin files, but this is also the first time I've seen these data in NetCDF-that-could-be-opened-in-R, so that's interesting to me (thanks).
Sep
16
comment How to open and plot Globcolour chlorophyll image in R?
Well how about a link to a file or some idea of what you've tried already?
Sep
16
comment Drawing smooth great circle?
Yeah, sorry - just fwiw. If you want to use R I will expand this, just happened to be looking at something similar today.
Sep
16
comment Custom projection problem with proj.4
You'll need to give more information. What steps do you take, what do you get, and how do you determine wrongness?
Sep
16
comment Custom projection problem with proj.4
Eh? The op says "vector"
Sep
16
answered Drawing smooth great circle?
Sep
16
comment Drawing smooth great circle?
FYI: bost.ocks.org/mike/example
Sep
15
comment How to create header files for multiple rasters in R
Other options could be to do esentially the same thing with GDAL's VRT, or raster's .grd format, or write R functions to matrix(readBin(...)) etc - they all amount to the same thing. Note that your ENVI version doesn't have georeferencing or projection, but presumably it could have, and the other pathways could/should too.
Sep
15
revised Avoiding R for windows gui front-end has stopped working error?
raster tag is not relevant
Sep
15
answered Avoiding R for windows gui front-end has stopped working error?
Sep
15
suggested approved edit on Avoiding R for windows gui front-end has stopped working error?