s2_rgb: Create RGB images from S2 reflectance products.
In pobsteta/theia2r: An R toolbox to find, download and preprocess Sentinel-2 data

Description Usage Arguments Value Note Author(s)

Function to create RGB images from Sentinel-2 reflectances.

s2_rgb(infiles, prod_type = NA, rgb_bands = 4:2, scaleRange = NA,
  outdir = NA, subdirs = NA, format = NA, compress = "DEFLATE",
  tmpdir = NA, rmtmp = TRUE, parallel = TRUE, overwrite = FALSE,
  .log_message = NA, .log_output = NA)

`infiles`	A vector of input filenames. Input files are paths of products already converted from SAFE format to a format managed by GDAL (use s2_translate to do it); their names must be in the theia2r naming convention (safe_shortname).
`prod_type`	(optional) Output product (see safe_shortname for the list of accepted products). If not provided, it is retrieved from the file name.
`rgb_bands`	(optional) 3-length integer vector, which the number of the bands to be used respectively for red, green and blue. Default is 4:2 (true colours). It is also possible to pass a list of 3-length integer vectors in order to create multiple RGB types for each input file. Notice that this is the actual number name of the bands: so, to use i.e. BOA band 11 (1610nm) use the number 11, even if band 11 is the 10th band of a BOA product (because band 10 is missing).
`scaleRange`	(optional) Range of valid values. If can be a 2-length integer vector (min-max for all the 3 bands) or a 6-length vector or 3x2 matrix (min red, min green, min blue, max red, max green, max blue). Default is to use c(0,2500) for bands 1-5; c(0,7500) bands 6-12.
`outdir`	(optional) Full name of the existing output directory where the files should be created. Default is the same directory of input reflectance files. # FIXME use a subdir with product name
`subdirs`	(optional) Logical: if TRUE, different indices are placed in separated `outfile` subdirectories; if FALSE, they are placed in `outfile` directory; if NA (default), subdirectories are created only if more than a single spectral index is required.
`format`	(optional) Format of the output file (in a format recognised by GDAL). Default is the same format of input images (or "GTiff" in case of VRT input images).
`compress`	(optional) In the case a GTiff format is present, the compression indicated with this parameter is used.
`tmpdir`	(optional) Path where intermediate files (VRT) will be created. Default is a temporary directory.
`rmtmp`	(optional) Logical: should temporary files be removed? (Default: TRUE)
`parallel`	(optional) Logical: if TRUE, the function is run using parallel processing, to speed-up the computation for large rasters. The number of cores is automatically determined; specifying it is also possible (e.g. `parallel = 4`). If FALSE (default), single core processing is used.
`overwrite`	(optional) Logical value: should existing thumbnails be overwritten? (default: TRUE)
`.log_message`	(optional) Internal parameter (it is used when the function is called by `theia2r()`).
`.log_output`	(optional) Internal parameter (it is used when the function is called by `theia2r()`).