Multigrids Image Analysis

Multigrids menu options on Image analysis Menu.  You must have loaded the satellite image into memory before this will work.

• Change display band
• Basic statistic: max, min, mean, std dev
• Scattergram of two bands
• Filter image
• Supervised classification
• Unsupervised classification
• Variance-covariance/Principal components
• Average reflectance in region
• Reinterpolate all to same resolution
  • Will use the resolution of the grid with the smallest data spacing
  • Will use bilinear interpolation
  • Will place files in a new subdirectory named "resolution_NN"
  • Be judicious and select only those bands you want to use; with Sentinel-2, this will increase the storage required by 3 times.
• Create Max DN grid:
• Create Average DN grid: create and open a grid with the average DN in all bands.
• Create Min DN grid
• Locate values; create a database with all points within a given range.  This will have the LAT/LONG, BAND, and DN.  This database can become very large if you do not pick values judiciously.  It can be useful to find extreme values.
• Tail percentiles: create a database with key information on each band
• Normalize

Last revision 12/26/2020