4-Aug-2010, version 1.3-10

Expanded sampleRandom by adding a 'cells' and 'extent' argument; 

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3-Aug-2010, version 1.3-9

Switched from RNetCDF to ncdf package for netcdf file support

Added three slots to class BasicRaster
unit='vector' ; to store the unit of the layer(s), e.g. kg m-2 s-1
zname='character' ; to store the name of the z (layers) variable, e.g. "time"
zvalue='vector' ; to store the values of the z variable, e.g. the dates corresponding to each later
These slots are now filled for values from netcdf files with "CF" type convention (e.g. cmip), with an attempt to covert "days since" to a Date (coverted to string).
Not yet used in writing, or with other formats

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2-Aug-2010, version 1.3-8

New clump function, also using igraph for large rasters & minor bug fix

Fixes to subs function (needs more checking)

To allow for better behaviour when using objects derived from Raster* objects (perhaps in other packages), replaced code like
  if (class(x) == 'RasterLayer') 
with
  if (inherits(x, 'RasterLayer'))

Bug fix: error when indexing a RasterStack as in s[1]  (as reported by Kevin Ummel)

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27-July-2010, version 1.3-3
Starting this log