Aggregation functions - ObjectVision/GeoDMS GitHub Wiki
Aggregation functions are used to aggregate data items between different domain units.
- count
- count_uint8 - is the count variant resulting in a uint8 data item
- count_uint16 - is the count variant resulting in a uint16 data item
- count_uint32 - is the count variant resulting in a uint32 data item
- count_uint64 - is the count variant resulting in a uint64 data item
- sum
- sum_float64 - is the sum variant resulting in a float64 data item
- sum_int8 - is the sum variant resulting in a int8 data item
- sum_int16 - is the sum variant resulting in a int16 data item
- sum_int32 - is the sum variant resulting in a int32 data item
- sum_int64 - is the sum variant resulting in a int64 data item
- sum_uint8 - is the sum variant resulting in a uint8 data item
- sum_uint16 - is the sum variant resulting in a uint16 data item
- sum_uint32 - is the sum variant resulting in a uint32 data item
- sum_uint64 - is the sum variant resulting in a uint64 data item
- sum_float32 - is the sum variant resulting in a float32 data item
- sum_dpoint - is the sum variant for dpoint data (coordinate-wise sum)
- sum_ipoint - is the sum variant for ipoint data (coordinate-wise sum)
- sum_upoint - is the sum variant for upoint data (coordinate-wise sum)
- mean
- minimum
- maximum
- min_ifdefined - (20.10.0 and later) minimum of the defined values, null for groups without any defined value
- max_ifdefined - (20.10.0 and later) maximum of the defined values, null for groups without any defined value
- min_alldefined - (20.10.0 and later) minimum, null for groups with any null value (or without values)
- max_alldefined - (20.10.0 and later) maximum, null for groups with any null value (or without values)
- first
- last
- modus
- modus_weighted
- modus_count
- modus_count_uint8 - is the modus_count variant resulting in a uint8 data item
- modus_count_uint16 - is the modus_count variant resulting in a uint16 data item; up to GeoDMS 20.13 registered as modus_count_uint17 (typo, see GeoDMS issue 1173)
- modus_count_uint17 - (sic) the misspelled registration name of the uint16 variant up to GeoDMS 20.13
- modus_count_uint32 - is the modus_count variant resulting in a uint32 data item
- modus_count_uint64 - is the modus_count variant resulting in a uint64 data item
- unique_count
- unique_count_uint8 - is the unique_count variant resulting in a uint8 data item
- unique_count_uint16 - is the unique_count variant resulting in a uint16 data item
- unique_count_uint32 - is the unique_count variant resulting in a uint32 data item
- unique_count_uint64 - is the unique_count variant resulting in a uint64 data item
- entropy
- average_entropy
- nth_element - nth element of an ascending sorted attribute
- nth_element_weighted - rank value based on the ascended weighted attribute
- rth_element - the r * (n-1)th elements of the ascending sorted attribute. N.B. use this operator for the median.
- sd - standard deviation
- var - variance
- standard deviance(sd) - (alternative page)
- (var)iance - (alternative page)
- (corr)elation
- corr - short operator name for correlation
- (cov)ariance
- cov - short operator name for covariance
- pcount - count the number of entries of a relation in the related domain
- pcount_uint8 - is the pcount variant resulting in uint8 data item
- pcount_uint16 - is the pcount variant resulting in uint16 data item
- pcount_uint32 - is the pcount variant resulting in uint32 data item
- pcount_uint64 - is the pcount variant resulting in uint64 data item
- mapping_count - count the number of cells of a grid unit in another grid unit
- reg_count - count the non null values of an attribute towards a regional level
- reg_count_uint16 - is the reg_count variant resulting in a uint16 data item
- reg_count_uint32 - is the reg_count variant resulting in a uint32 data item
- reg_count_uint8 - is the reg_count variant resulting in a uint8 data item