make_cloudcount_product: Take a cloudcount raster and a number-of-observations raster...
In modiscloud: R tools for processing Level 2 Cloud Mask products from MODIS

Description Usage Arguments Value Author(s) References See Also Examples

Takes a cloudcount raster, and a number-of-observations raster, and makes a fraction cloud product.

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  make_cloudcount_product(master_bitgridvalsCC,
    master_bitgridvals0, num_its, grd, xdim_new, ydim_new,
    countzeros = FALSE)

`master_bitgridvalsCC`	Cloud count raster
`master_bitgridvals0`	Raster indicating the count of valid observations
`num_its`	The total number of images or files, i.e. the number of attempts to see clouds
`grd`	An input grid with the appropriate projection and extent to match the rasters
`xdim_new`	The x-dimension (in # of pixels; i.e. # of columns) of the input/output grids
`ydim_new`	The y-dimension (in # of pixels; i.e. # of rows) of the input/output grids
`countzeros`	Should zeros be counted? TRUE or FALSE

grd_final, a grid with fraction cloudy

Nicholas J. Matzke matzke@berkeley.edu

Ackerman S, Frey R, Strabala K, Liu Y, Gumley L, Baum B and Menzel P (2010). "Discriminating clear-sky from cloud with MODIS algorithm theoretical basis document (MOD35)." MODIS Cloud Mask Team, Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin - Madison. <URL: http://modis-atmos.gsfc.nasa.gov/_docs/MOD35_ATBD_Collection6.pdf>.

GoldsmithMatzkeDawson2013

sum_bitgrid