Displaying 2 results from an estimated 2 matches for "measuresed".
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2006 Mar 11
2
how to create analog stripchart plots of x vs t (t=mm/dd/yyyy hh:mm:ss)
Hello r-experts,
I sure could us a little help.
I have an ever updating text file with timestamped data in it. I can
reformat in anyway I want if need be but currently I have chosen to make
columns of date, time and measuresed value (comma delimeted and with the
dates and times in quotes to interpret them as strings).
Here is a small section of my text data file:
"3/11/2006","15:09",0.014652
"3/11/2006","15:08",0.014652
"3/11/2006","15:06",0.000000
...etc......
2005 Apr 24
1
large dataset import, aggregation and reshape
Dear useRs
We have a data-set (comma delimited) with 12Millions of rows, and 5
columns (in fact many more, but we need only 4 of them): id, factor 'a'
(5 levels), factor 'b' (15 levels), date-stamp, numeric measurement. We
run R on suse-linux 9.1 with 2GB RAM, (and a 3.5GB swap file).
on average we have 30 obs. per id. We want to aggregate (eg. sum of the
measuresments under