Thanks very much to everyone for their replies, especially Ista, who took the
time to write script. Before posting the question I had tried attach() and then
within or with statements and now know why those generated errors. Some of my
syntax was incorrect. Thanks for clearing that up. "Within"
Hi,
Here are some examples using the mtcars dataset that you can modify to work
with your data.
## Here is my first try using within.
## Somehow the elements of region that
## should be zero are converted to NA
mtcars <- within(mtcars, {
region <- 0
region[gear==4&carb==4] <- 1
regio
Check out 'with' and 'within'.
Sent from my Verizon Wireless 4G LTE Smartphone
Original message
From: bcrombie
Date: 06/12/2013 16:36 (GMT-05:00)
To: r-help@r-project.org
Subject: [R] rewrite script to eliminate constant object reference
I'm adding a column (region) to
If you want an easy way to change the name of the data frame for assignment
then you may want a macro. There is an article in the R journal (
http://cran.r-project.org/doc/Rnews/Rnews_2001-3.pdf) on creating macros
and there are tools that help with creating macros in the gtools package.
Though w
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