...
- convert the anomaly field to geopoints (conversion to geopoints only works with one field at a time)
- use the
filter()andabs()functions to find just the absolute values greater than 4 - plot with customised Symbol Plotting icons (we could take the ones used in the Processing Data tutorial)
- these points could be written to a file
In Missing Values and Masks, we will see how we could do this sort of thing directly with the GRIB fields.