Convert to an rsm.design
DESCRIPTION:
Converts each column of a data.frame to an rsm.factor, resulting in an rsm.design object, an object suitable for fitting a response surface.
USAGE: 
as.rsm.design(x, rsm.factors=seq(length(x)), logx = F)
REQUIRED ARGUMENTS:
x:
a data.frame, or something that can be converted to a data.frame by as.data.frame.
OPTIONAL ARGUMENTS:
rsm.factors:
a subscripting expression for the data.frame x that designates the vbariables that are to be converted to rsm.factors. Other variables are returned unchanged.
logx:
single logical value or vector of logical values for whether each rsm.factor is evenly spaced on the log scale.
VALUE:
an rsm.design object.
DETAILS:
The functions rsm.lm and plot.rsm.design rely on the data having attributes of the class rsm.design. When the experiment is read from an external file, via read.table for instance, a user can use as.rsm.design to interface easily to the response surface fitting functions of the S+DOX module.

If you wish to convert a fac.design object to an rsm.design, see the function convert.to.rsm.

SEE ALSO:
rsm.design , rsm.lm , as.rsm.factor , convert.to.rsm .
EXAMPLES: 
my.df <- read.table("rsm.dat")
my.rsmdf <- as.rsm.design(my.df, c("temp", "pressure"))