[R-sig-Geo] Antw: large datasets processing improving?

[Alexander Arpaci]

Hello,
sorry I did not correctly posted my code



for (i in 1:dim(wamod_data)[1]) {
d1$perc[i] <- length(d1$normFMI[d1$normFMI>> "Alexander Arpaci"  24.05.11 21.54 Uhr >>>
Hi List

maybe not an truly geo like question 
but an R question I want to calculate percentiles which are ranked by comparing daily values percentiles with the overall distribution percentiles
I have data 1700 files with daily values  from 1960 so about 18000 values/days 
I use the following code which does what I want but it takes about 10 -15 minutes per file...
for (i in 1:17886) {
d1$perc[i] <- length(d1$normFMI[d1$normFMI

MSc. Alexander Arpaci
Assistant researcher

Department of Forest - and Soil Sciences
Institute of Silviculture
Tel. +43-1-47654-4081
e-mail: alexander.arpaci at boku.ac.at
www.wabo.boku.ac.at 

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MSc. Alexander Arpaci
Assistant researcher

Department of Forest - and Soil Sciences
Institute of Silviculture
Tel. +43-1-47654-4081
e-mail: alexander.arpaci at boku.ac.at
www.wabo.boku.ac.at