Just to add, I did not know that the speed of data access is so much
different in matrix and dataframes. This is one for the future.
Thanks again Jim :)
-Shivam
On Mon, Sep 10, 2012 at 3:29 AM, Shivam wrote:
> Thanks a lot Jim, it works a treat. Just had to change the date format
> in the mCALL
Thanks a lot Jim, it works a treat. Just had to change the date format
in the mCALL as well. But you saved me 80 hours of fretting and
frustration. Really thankful for it.
Regards,
Shivam
On Mon, Sep 10, 2012 at 1:33 AM, jim holtman wrote:
> How about an improvement to 16 seconds. The first thi
How about an improvement to 16 seconds. The first thing to do is to
convert you data to a matrix because accessing data in a dataframe is
very expensive. If you run Rprof on your code you will see that all
the time is spent in retrieving the information. Converting to a
matrix and using matrix a
Dear All,
I need to sum a column from another dataframe based on the row values
of one dataframe. I am stuck in a loop trying to accomplish it and at
current speed it will take more than 80 hours to complete. Needless to
say I am looking for a more elegant/quicker solution. Really need some
help h
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