lc_prepare: Prepare land cover data

In PCM: Cloud and snow discrimination on AVHRR imagery

Description

This function remaps and interpolates (nearest neighbor) to desired projection and geographic extent the GLC2000 land cover data for Europe and Africa which could be obtained from http://bioval.jrc.ec.europa.eu/products/glc2000/products.php free of charge for scientific usage. The data should be in binary form and correspond to Africa v5.0 and Europe v2.0 products.

Usage

lc_prepare(lc.africa.file = lc.africa.file, lc.europe.file = lc.europe.file, out.dir = out.dir, out.proj = out.proj, out.extent = out.extent, out.dim = out.dim, Africa = Africa)

Arguments

lc.africa.file	Required! String with an absolute path to the africa_v5.bil file.
lc.europe.file	Required! String with an absolute path to the GLC_EU_V2.bil file.
out.dir	Required! Output directory where the lc.tif will be stored.
out.proj	Required! String with the Proj4 library coordinate system definition. To retrieve it type gdalinfo -proj4 your_file in the command line.
out.extent	Required! Numeric vector with the coordinates of the CENTRE of upper-left pixel and the CENTRE of lower-right pixel in a form c(ULX,YLY,LRX,LRY).
out.dim	Required! Numeric vector with the output dimensions in the form c(ncols,nrows).
Africa	Optional. Logical value indicating if Africa data should be utilized. In case your region of interest is only in the Europe you can set this keyword to FALSE. By default TRUE.

Value

0 on success or 1 on failure. Success indicates that the output lc.tif file in the GeoTiff format was written to out.dir.

Note

Please read JRC disclaimer information: http://bioval.jrc.ec.europa.eu/products/glc2000/disclaimer.php If you use the GLC data in your publication please cite:"Global Land Cover 2000 database. European Commission, Joint Research Center, 2003, http://www-gem.jrc.it/glc2000"

Author(s)

Jan Musial

References

The Land Cover Map for Africa in the Year 2000. P. Mayaux, E. Bartholome, A. Cabral, M. Cherlet, P. Defourny, A. Di Gregorio, O. Diallo, M. Massart, A. Nonguierma, J.-F. Pekel, C. Pretorius, C. Vancutsem, M. Vasconcelos. GLC2000 database, European Commision Joint Research Centre, 2003. The Land Cover Map for Europe in the Year 2000. A. Hartley, J-F.Pekel, M.Ledwith, J-L.Champeaux, E.De Badts, and S.A.Bartalev. GLC2000 database, European Commision Joint Research Centre, 2006.

See Also

PCM

Examples

## Not run: 
lc_prepare(lc.africa.file='/path/to/africa_v5.bil',
               lc.europe.file='/path/to/GLC_EU_V2.bil',
               out.dir='/path/to/outdir/',
               out.proj="+proj=laea +a=6370997.0 +b=6370997.0 +lat_0=50.0 +lon_0=20.0",
               out.extent=c(-2521000.0,2401000.0,980000.0,-2000000.0),
               out.dim=c(3500,4400),
               Africa=T)

## End(Not run)

PCM documentation built on May 2, 2019, 5:16 p.m.