plot script function minor modification before testing for reg2

adding plot of difference from mosaicing to mosaic function comparison script

plot function figure in mosaic test script

introduce plot function to assess mosaicing

adding plot function to assess the mosaicing

testing mosaicing for reg2 Europe

mosaicing test script splitting function from script and clean up

splitting functions from mosaicing test script to automate process of comparison

debugging and testing mosaicFiles function

creating mosaicFiles function to ease automation of comparison