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2012 Oct 26
1
Where Can I Find the Function letterTrevor?
Hi All,
I'm trying to create two side-by-side contour plots with one legend by
modifying the code found here:
http://wiki.cbr.washington.edu/qerm/sites/qerm/images/b/bb/Example_4-panel_v1a.R
I've been able to set up the other two functions called in the code, but I
can't find reference to print.letterTrevor.R anywhere other than the page
linked above. I've searched all the help forums and archives I can find,
and I'm coming up with nothing. Is this some c...
2010 Nov 24
5
Performance tuning tips when working with wide datasets
Does anyone have any performance tuning tips when working with datasets that are extremely wide (e.g. 20,000 columns)?
In particular, I am trying to perform a merge like below:
merged_data <- merge(data1, data2, by.x="date",by.y="date",all=TRUE,sort=TRUE);
This statement takes about 8 hours to execute on a pretty fast machine. The dataset data1 contains daily data going