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This new implementation is fully compliant with the ESRI technical specifications and can be configured with the new "BILBIPBSQ" identifier, whereas the existing PI implementation of FEWS BIL files uses the identifier "BIL".
Using NoData for missing values
In the header files (*.HDR) which normally come with a BIL / BIP / BSQ file, a NoData field can be used to define the numerical value which has been assigned to pixels for which there is no valid data. This field is not mentioned in the ESRI documentation but it's usage is very common, as follows:
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NODATA -999
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The result if this example is identical to defining <missingValue>-999</missingValue> in the import configuration.
Using NBLOCKS for time series
For many applications multiple BIL, BIP or BSQ files could be available, representing a time series of observations (daily, monthly, weekly, etc.)
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