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median
2003 Oct 29
3
long algo
...g R for months and find it really
practical and straight forward.
However (the inevitable however), I am finding it very
slow for one of my operations:
it s basically an itertation over i and j in a pretty
big table (4* 4608). It takes 30 minutes!!!!
Thanks
Ps:if it can help here is the source:
median1<-matrix(nrow=4608,ncol=1)
median2<-matrix(nrow=4608,ncol=1)
median3<-matrix(nrow=4608,ncol=1)
median4<-matrix(nrow=4608,ncol=1)
v<-c(18,19,20,21,23)
for (i in 0:11)
{
for (j in 1:384)
{
median1[j+(i*384),]<-puce[j+(i*384),5]+median(puce[v+384*i,2]-pu...