Hi:
In general, how to I cast a character to the class that I am trying to change.
For example, if I have a data frame df1. df1 has a column x. suppose I want to
a substring of x (the first 3 chars). Then I want to do something like
df1$new = substring(of x)
Example
Data frame df1
x
abcd
efgh
On Oct 30, 2009, at 11:24 AM, Vadlamani, Satish {FLNA} wrote:
Hi:
In general, how to I cast a character to the class that I am trying
to change.
For example, if I have a data frame df1. df1 has a column x. suppose
I want to a substring of x (the first 3 chars). Then I want to do
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