I need to extract labels from Excel input data to use as dimnames later on.
I can successfully read the Excel data into three matrices:

capacity <- read.csv("c:\\R\\data\\capacity.csv")
price.lookup <- read.csv("c:\\R\\data\\price lookup.csv")
sales <- read.csv("c:\\R\\data\\sales.csv")

The values to be used as dimnames are duplicated in the matrices.

For example, I would like to create

dimnames(out.table) [[3]] <- c("a", "b", "c")

by not explicitly entering the first three letters of the alphabet but by
something
like

dimnames(out.table) [[3]] <- pl.names

but I cannot generate unique values with

> pl.names <- unique(with(price.lookup, list(Price_Line)))
> pl.names
[[1]]
  [1] a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a c c c c c c c
 [44] c c c c c c c c c c c c c c c c c c c c c c c c c c c c c b b b b b b
b b b b b b b b
 [87] b b b b b b b b b b b b b b b b b b b b b b
Levels: a b c

Can someone please suggest how I can grab "a", "b", "c" from

(with(price.lookup, list(Price_Line))

?

Thank you,


-- 
__________________________
*Barry E. King, Ph.D.*
Director of Retail Operations
Qualex Consulting Services, Inc.
Barry.King@qlx.com
O: (317)940-5464
M: (317)507-0661
__________________________

	[[alternative HTML version deleted]]

