Displaying 1 result from an estimated 1 matches for "pn_formatting".
2009 Mar 18
2
Profiling question: string formatting extremely slow
...sing R to find duplicates in a set of 6 files containing Part Number
information. Before applying the intersect method to identify the duplicates
I need to normalize the P/Ns. Converting the P/N to uppercase if
alphanumerical and applying an 18 char long zero padding if numerical.
When I apply the pn_formatting function (see code below) to "Part Number"
column of the data.frame (character vectors up to 18 char long) it consumes
a lot of memory, my computer (Windows XP SP3) starts to swap memory, CPU
goes to zero and completion takes hours to complete. Part Number columns can
have from 7'000...