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Thanks Petr, one line of code - awesome. -- View this message in context: http://r.789695.n4.nabble.com/Extracting-rows-with-latest-date-from-a-data-frame-tp4305651p4319303.html Sent from the R help mailing list archive at Nabble.com.

Thanks, will go ahead -- View this message in context: http://r.789695.n4.nabble.com/Install-of-R-2-15-1-for-Windows-64-bit-on-application-server-tp4644042p4644829.html Sent from the R help mailing list archive at Nabble...

Hi, I'm looking to install ?R? on an application server which we can give plenty of resource to, and actually run the program from a terminal server. Do you know if this is possible, and if so are there...

Hi, I'm trying to use the excel.link package to write data to excel spreadsheets. I've installed the RDCOMClient package as required but get the error: package 'RDCOMClient' is not installed for 'arch=x64' I'm on Rx64...

Hi, Can you extract data from a SQL server table based on parameters already in R? For example I have a list of unique patient IDs with latest hospitalisation date which I've processed in R. I need to join...

Hi, I am new to R (and rusty on SQL!) and I'm trying to extract records from a SQL server database. I have a table of patient records (LoadPUS) which have three code columns which i want to evaluate...

Hi all, I want to loop through a series of data frames and append them into one data frame, however I do not want all columns of the original data frames to be in the new data frame. I have...

Hi, I?m attempting to export data (split into multiple files from one large dataset) from R to excel using the excel.link package. The code for export is as follows: for(i in practicesNN){ #Create relevant data for input...

Hi, I have a list of unique patient IDs which I want to run against a dataframe of unique patient IDs with dates. There are multiple date instances against unique IDs. The end result I wish is that I have...