adding documentation and debugging subsampling function for NEX fun

run 9 NEX assessment, 75% overlap 10x30 early modifications

run 8 NEX scaling up assessment part2, production of figures for Asia, Africa and South America

run 8 NEX assessment part 1 for scaling 10x30, Asia, Africa, South America

revisions2 multitime scale paper, further modifications before submission

revisions2 multitime scale paper, modifications to functions scrip

revisions2 multitime scale paper, figures and difference analysis

scaling up NEX assessement part2, Asia adding number of daily predictions

scaling up assessment part 1, Asia, overlap with 10x30 degrees tiles

scaling up NEX assessment part 2, addding RMSE visualization with raster for 75% overlap run