I have a table with two columns, one with types of blood (A, B, AB or 0) and one with the factor (negative = -1 or positive = 1).
How can I combine those two columns so that 7 bars are plotted (A, B, AB, 0, -A, -B and -0)? -- ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
