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2012 Oct 11
3
Sorting a data frame by specifying a vector
Hello all, I cannot seem to figure out this seemingly simple procedure. I want to sort a data frame by a specified character vector. So for : df.. <- data.frame(Season=rep(c("Summer","Fall","Winter","Spring"),4),Obs= runif(length(rep(c("Summer","Fall","Winter","Spring"),4)))) I want to sort the data frame
2010 Mar 26
1
MySQL and RODBC - limitations
Hello, By accident I fell over a problem, which just did not expected... Via Windows ODBC (package RODBC) I download data from a MySQL 5.1 database. The amount is so large that the working set memory is going up to around 400MB. Not too large, I think. Anyhow, one column includes ten digit numbers. Somehow, not all of these numbers are displayed correctly. At some point all numbers turn to