#' @inheritParams getZeroDeltaForecast
getNeighborsDeltaForecast = function(data, today, memory, horizon, shape_params, ...)
{
- if (any(is.na(shape_params$weights) | is.na(shape_params$indices)))
+ first_day = max(1, today-memory)
+ filter = shape_params$indices >= first_day
+ indices = shape_params$indices[filter]
+ weights = shape_params$weights[filter]
+ if (any(is.na(weights) | is.na(indices)))
return (NA)
- gaps = sapply(shape_params$indices, function(i) {
+ gaps = sapply(indices, function(i) {
data$getSerie(i+1)[1] - tail(data$getSerie(i), 1)
})
- scal_product = shape_params$weights * gaps
- norm_fact = sum( shape_params$weights[!is.na(scal_product)] )
+ scal_product = weights * gaps
+ norm_fact = sum( weights[!is.na(scal_product)] )
sum(scal_product, na.rm=TRUE) / norm_fact
}