Message-ID: <1349774737725-4645548.post@n4.nabble.com>
Date: 2012-10-09T09:25:37Z
From: fxen3k
Subject: How to create a column in dependence of another column
Hi there,
I'm sorry for the bad subject decision. Couldn't describe it better...
In my dataset called "dataSet" I want to create a new variable column called
"deal_category" which depends on another column called "trans_value".
In column "trans_value" I have values in USDm. Now what I want to do is to
give these values a category called "low", "medium" or "high". The
classification depends on the size of the values.
"low", if value in "trans_value" is < 200 USDm
"medium", if value x in "trans_value" is: 200 USDm =< x < 500 USDm
"high", if value in "trans_value" is: >= 500 USDm
Having defined these deals with low, medium, high I want to run a lm() with
these categories as independent variable.
deal_category2 <- factor(deal_category)
levels(deal_category2) <- c("low", "medium", "high")
reg_1 <- lm(dep_var1 ~ indep_1 + indep_2 + deal_category2)
summary(reg_1)
Is this correct? Does R recognize my categories as variables?
Thanks for all your support!
Felix
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