valid
valid( QDataSet ds ) → QDataSet
returns a dataset with zero where the data is invalid, and positive
non-zero where the data is valid. (This just returns the weights
plane of the dataset.)
r= where( valid( ds ) )
Parameters
ds - a rank N dataset that might have FILL_VALUE, VALID_MIN or VALID_MAX
set.
Returns:
a rank N dataset with the same geometry, with zeros where the data
is invalid and >0 where the data is valid.
See Also:
invalid(QDataSet)
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variance
variance( Object o ) → QDataSet
variance function is the square of the stddev.
Parameters
o - object which can be interpreted as rank 1 dataset.
Returns:
Rank 0 QDataSet containing the variance. The result is currently dimensionless, but this will change.
See Also:
stddev
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variance( QDataSet ds ) → QDataSet