This is a general question that just popped into my head that I have always wondered. There have been several times when I\'ve needed to rotate data in Excel, for example:
I know this is a long shot, but I have a huge text file and I need to add a given number开发者_运维问答 to other numbers matching some criteria.
Task at hand is to move data as shown in table 1 to that of table 2. Table (1) IDVal ----- 1a 1b 1c 2k 3l 3m 3n
I am somewhat new to R and I have run into a point where I need some help. I figure the reshape package can accomplish what I need to do.
I am just starting to get beyond the basics in R and have come to a point where I need some help. I want to restructure some data.Here is what a sample dataframe may look like:
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I need to write a program that performs arithmetic (+-*/) on multiples time series of different date range (mostly from 2007-2009) and frequency (weekly, mont开发者_如何学编程hly, yearly...).
My office relies on dozens of old MARK IV programs on a mainframe to pull down and manipulate data from a DB2 database into mainframe files (which eventually turn into excel spreadsheets at the moment
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