Transferred some of the functions developped in the bfastexospatial package
Adapted existing functions to the package
Renamed getProj --> .getProj
Added dependencies to DESCRIPTION
Working on the spi function
Added 3 by 3 pixel TRMM brick/stack of daily precipitation estimates
Documented rasterStack added to test data
Added zoo object and documentation for it
First Roxygenize, package seems to be building well
Added 2 new functions (to create monthly composites and to compute spi)
Roxygenized package
Merge branch 'develop'