methods function

S3 methods for opscale

Plot, print, shepard, stress, and summary methods for objects of class opscale

## S3 method for class 'opscale'
plot(x, ...)
## S3 method for class 'opscale'
print(x, ...)
## S3 method for class 'opscale'
summary(object, ...)

Arguments

• object: Object of class opscale
• x: Object of class opscale
• ...: Ignored

Details

Method print returns a listing of the data. summary describes the optimal scale transformation. plot calls os.plot and returns an object of class trellis that graphs optimally-scaled values against the original (qualitative) data values.

See Also

os.plot

Examples

###   x1 is vector of qualitative data
  ###   x2 is vector of quantitative values
            x1 <- c(1,1,1,1,2,2,2,3,3,3,3,3,3)     
            x2 <- c(3,2,2,2,1,2,3,4,5,2,6,6,4)     
  ###   Optimal scaling, specifying that x1
  ###   is ordinal-discrete
     op.scaled <- opscale(x.qual=x1, x.quant=x2,   
                  level=2, process=1)              
     print(op.scaled)
     summary(op.scaled)
     plot(op.scaled)