how to extract values from a raster according to Lat and long of the values?
How do you get those values from the example header file that you included?
On Sun, Jan 27, 2013 at 9:15 PM, Pascal Oettli <kridox at ymail.com> wrote:
?extract HTH Pascal Le 27/01/2013 22:53, Jonsson a ?crit :
having 12 files with 12 hdrs for one year: these files are raster (projected WGS84,lat long):https://echange-fichiers.inra.fr/get?k=rLSyoavrnifGyH5XrlO samples = 1440 lines = 720 bands = 1 header offset = 0 file type = ENVI Standard data type = 4 interleave = bsq byte order = 0 map info = { Geographic Lat/Lon, 1, 1, -180, 90, 0.25, 0.25,WGS-84} coordinate system string = GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984", SPHEROID["WGS_1984",6378137,298.257223563]] ,PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]] } These lines will open the files as a list: a<-list.files("D:\\ECV\\2010", "*.envi", full.names = TRUE) for(i in 1:length(a)){ d <- raster(a[i]} I would like to extract the values correspond to 44.8386? N, 0.5783? W from all files as txt file -- View this message in context: http://r.789695.n4.nabble.com/how-to-extract-values-from-a-raster-according-to-Lat-and-long-of-the-values-tp4656767.html Sent from the R help mailing list archive at Nabble.com.
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