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Hi R?lers, I?m running into speeding issues, performing a bunch of ?gsub(patternvector, [token],dataframe$text_column)" on a data frame containing >4millionentries. (The ?patternvectors? contain up to 500 elements) Is there any better/faster way than performing...
Hi all, what are the placeholders for string operations/modifications? Is there a placeholder for numbers, which would allow me to easily replace all numbers in a string? Something like text1 <- c("this is a number 23%") text2 <- c("this...
Mcapply from package 'parallel'. Also see package 'multicore' > Am 06.11.2013 um 00:01 schrieb Agony <agony_jah at yahoo.com>: > > Dear all, > > I have about 50 pages of R codes and ran it in both OS X and...
Dear experts, I?ve been on this for weeks now, and couldn?t find a solution..Sorry for the long description. I figured I post many details, so you get the problem entirely, although it?s not hard to grasp...
How?s that not reproducible? 1. Data frame, one column with text strings 2. Size of data frame= 4million observations 3. A bunch of gsubs in a row ( gsub(patternvector, ?[token]?,dataframe$text_column) ) 4. General question: How to speed...
Thanks everybody! Now I understand the need for more details: the patterns for the gsubs are of different kinds.First, I have character strings, I need to replace. Therefore, I have around 5000 stock ticker symbols (e.g. c(?AAPL...
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