X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=pkg%2FR%2FJ_Neighbors.R;h=ceea8037267ee610ef3f09f1ef75bf75b8a8223e;hb=8ab6420267542d34b7428f978aa76ba939b9754b;hp=58453ea8da2d460fcefd566f13bcefa6a8213f1c;hpb=d2ab47a744d8fb29c03a76a7ca2368dae53f9a57;p=talweg.git

diff --git a/pkg/R/J_Neighbors.R b/pkg/R/J_Neighbors.R
index 58453ea..ceea803 100644
--- a/pkg/R/J_Neighbors.R
+++ b/pkg/R/J_Neighbors.R
@@ -18,11 +18,14 @@ getNeighborsJumpPredict = function(data, today, memory, predict_from, horizon,
 	indices = params$indices[filter]
 	weights = params$weights[filter]
 
+	if (is.na(indices[1]))
+		return (NA)
+
 	gaps = sapply(indices, function(i) {
 		if (predict_from >= 2)
-			data$getSerie(i+1)[predict_from] - data$getSerie(i+1)[predict_from-1]
+			data$getSerie(i)[predict_from] - data$getSerie(i)[predict_from-1]
 		else
-			head(data$getSerie(i+1),1) - tail(data$getSerie(i),1)
+			head(data$getSerie(i),1) - tail(data$getSerie(i-1),1)
 	})
 	scal_product = weights * gaps
 	norm_fact = sum( weights[!is.na(scal_product)] )