[GRASS-stats] Loading a point-vector table with 466 columns
Nikos Alexandris
nikos.alexandris at felis.uni-freiburg.de
Tue May 26 06:54:48 EDT 2009
On Tue, 2009-05-26 at 12:48 +0200, Nikos Alexandris wrote:
> First some results for 1000 rows by 500 columns:
>
> > system.time(random_points <- readVECT6("random_points_1000",
> plugin=TRUE))
> OGR data source with driver: GRASS
> Source:
> "/geo/grassdb/spearfish60/user1/vector/random_points_1000/head",
> layer: "1"
> with 1000 rows and 501 columns
> ^C
Correction:
> ### This was running for more than 10 hours !!! ###
This was NOT running for more than 10 hours!! It was the double loop
that was running for more than 10 hours to generate 1000 by 500 random
numbers.
Anyway, the above readVECT6() was running for at least 20 minutes while
the readVECT6(plugin=FALSE) and read.csv do the job within acceptable
times.
Apologies again,
Nikos
P.S. Script attached as a .sh file with lots of empty lines between code
to make it easy to read.
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