LTTB
gts
The LTTB function downsamples a Geo Time Series™ or list thereof using the LTTB (Largest Triangle Three Buckets) algorithm. This algorithm downsamples a GTS by selecting datapoints from the original GTS which will preserve the overall shape of the graphical representation of the data.
See also
Signatures
Examples
NEWGTS
1 1000
<%
'i' STORE
$i NaN NaN NaN $i 250. / PI * COS ADDVALUE
%> FOR
DUP
// Keep 50 datapoints
50 LTTB
Examples
gts = NEWGTS()
FOR(1, 1000, (i) -> {
ADDVALUE(gts, i, NaN, NaN, NaN, COS(i / 250.0 * PI()))
}
)
// Keep 50 datapoints
newGts = LTTB(gts, 50)
return gts, newGts