Re: [R-sig-Geo] extracting oceanographic data

2008-06-26 Thread Michael Sumner
LOUZAO wrote: Hello Mike, Thank you for your answer but I have some questions for you: HDF and netCDF can be difficult - you need to compile rgdal from against FWTools Do you mean installing the FWTools software opening the HDF or netCDF files and using later rgdal from R? Could you give me

Re: [R-sig-Geo] extracting oceanographic data

2008-06-24 Thread Michael Sumner
Hello, I've worked a lot on problems of this type - here's some quick thoughts, not really directly addressing your questions. HDF and netCDF can be difficult - you need to compile rgdal from against FWTools, or from source to have those work with readGDAL. I would just use gdal_translate to

[R-sig-Geo] extracting oceanographic data

2008-06-24 Thread LOUZAO
Dear list, I'm trying to extract different oceanographic data (chlorophyll, sea surface temperature, etc.) for doing habitat modelling. The input data are locations (lat, lon) of tracking data of marine top predators and I would like to extract oceanographic data from a given area around each