Testing of new effective sampling size calculations and box-whisker plots

[dylanbeaudette]

New process:

1. load rasters into memory if possible
2. perform cursory grid-based sampling to determine Moran's I of each raster
3. set sampling intensity based on I of each raster

This is all implemented in:

• sharpshootR::sampleRasterStackByMU(..., estimateEffectiveSampleSize=TRUE)
• sharpshootR::Moran_I_ByRaster()
• sharpshootR::ESS_by_Moran_I()

These functions have not been extensively documented or tested.

[dylanbeaudette]

The Moran_I_ByRaster() function likely underestimates SA. A more appropriate measure would mask the input raster using the source polygons. This will not work when pixels are large relative to map unit polygons.

[dylanbeaudette]

Proposed, better approach:

1. mask current raster by input polygons
2. if cell size < 30m, resample to 30m (or some such value)
3. compute Morans' I within polygons

[dylanbeaudette]

Over-sampling will less of a concern after addressing this issue.