weights_almon | R Documentation |
Computes Almon polynomial weighting curves. Handy to self-select specific time aggregation weighting schemes
for input in ctr_agg
using the weights
argument.
weights_almon(n, orders = 1:3, do.inverse = TRUE, do.normalize = TRUE)
n |
a single |
orders |
a |
do.inverse |
|
do.normalize |
a |
The Almon polynomial formula implemented is:
(1 - (1 - i/n)^{r})(1 - i/n)^{R - r}
, where i
is the lag index ordered from
1 to n
. The inverse is computed by changing i/n
to 1 - i/n
.
A data.frame
of all Almon polynomial weighting curves, of size length(orders)
(times two if
do.inverse = TRUE
).
ctr_agg
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