REDUCE
reducer
framework
The REDUCE framework groups Geo Time Series™ by equivalence classes based on label values and applies a function on each equivalence class of Geo Time Series™, considering the values of each tick and producing one GTS per equivalence class.
As the selected reducer function is applied tick by tick, it is usually wise to BUCKETIZE the GTS first with a common value of lastbucket.
The labels whose values are common to all the GTS in an equivalence class will be retained.
Since 2.1 you can make REDUCE override the GTSs ticks. This usage in mainly to be used in conjuction with MACROREDUCER.
See also
Signatures
Examples
NEWGTS 'a' RENAME { 'type' '1' } RELABEL
1 10
<%
NaN NaN NaN 1 ADDVALUE
%> FOR
NEWGTS 'b' RENAME { 'type' '1' } RELABEL
1 10
<%
NaN NaN NaN 1 ADDVALUE
%> FOR
NEWGTS 'a' RENAME { 'type' '2' } RELABEL
1 10
<%
NaN NaN NaN 2 ADDVALUE
%> FOR
NEWGTS 'b' RENAME { 'type' '2' } RELABEL
1 10
<%
NaN NaN NaN 2 ADDVALUE
%> FOR
4 ->LIST
[ SWAP [ 'type' ] reducer.product ] REDUCE
[
NEWGTS
1 10
<% NaN NaN NaN 1 ADDVALUE %> FOR
NEWGTS
1 5
<% 2 * NaN NaN NaN 2 ADDVALUE %> FOR
]
[
SWAP
[]
<%
'rw' STORE
$rw 0 GET 5 * // Tick * 5
NaN NaN NaN // Loc & Elev
0
$rw 7 GET
<%
DUP ISNULL
<% DROP %> <% + %>
IFTE
%>
FOREACH // Value
%>
MACROREDUCER
T
] REDUCE