occurence_id
OLE2 ZIKA[status vector lat polygon_admin lon year gaul_ad0 source_type location_type country country_id ]
OLE2 ZIKA country[ | occurence_id]	O=0.5
grid: /occurence_id (unitless) ordered (1) to (42066) by 1.0 N= 42066 pts :grid	O=0.5
$partialdiff sub occurence_id$ [ OLE2 ZIKA lat ][ | occurence_id]	M

SOURCES .OLE2 .ZIKA country 1 index .lat occurence_id exch occurence_id partial

Filters

Here are some filters that are useful for manipulating data. There are actually many more available, but they have to be entered manually. See Ingrid Function Documentation for more information.

• Monthly Climatology calculates a monthly climatology by averaging over all years.
• anomalies calculates the difference between the (above) monthly climatology and the original data.
• Integrate along occurence_id
• Differentiate along occurence_id
• Take differences along occurence_id

Average over occurence_id |
RMS (root mean square with mean *not* removed) over occurence_id |
RMSA (root mean square with mean removed) over occurence_id |
Maximum over occurence_id |
Minimum over occurence_id |
Detrend (best-fit-line) over occurence_id |

Convert units from degree_north to

Note on units