Profile plots

[Art Kendall]

Does any body know if there is free software to do profile plots? Profile plots are special parallel coordinate plots used when all of the variables in the set are measured on the same scale, e.g., dollars, percents, percentiles, z-scores, T-scores, IQs, extent scales, Likert scales etc. They are used to visualize  standardized test scores, cluster profiles, repeated measures (including time series),  points along the electromagnetic spectrum, EKGs, EEGs ,  ipsative scores, etc. They are very much like  parallel coordinate plots. They have a set of parallel axes, but all of the scales are anchored at a common center  reference line perpendicular to the set of parallel axes.   E.g. 100 for IQs, 50 for  percentiles, zero for standardized variables, neither disagree or agree for Likert scales, etc.  They may have additional reference lines at other points also, e.g, 0 and 100 for percents or percentiles, -3 -2 -1 1 2 3 for standardized scores, 55 70 85 115 130 145 for IQ's, etc. -- Art Kendall Social Research Consultants ---------------------------------------------- CLASS-L list. Instructions: http://www.classification-society.org/csna/lists.html#class-l