[R] How to obtain Frequency Tables for Histogram outputs and Frequency Polygons

Couple of questions: 1. How can I obtain the frequency tables for a histogram chart? 2. Is there a short cut to obtain the frequency polygons directly without having to generate the frequency table and doing a line plot? Thanks ina dvance for any reply. j. Example data:

[R] Crosstabs in R

HI, I have the data in the following format. My aim is to determine the concordance in genotype calls (SNP1, 2, 3,etc) at two centers. DNA center snp1 snp2 NA07019 1 A A NA07348 1 M G NA10830 1 A G NA10851 1 M G NA10857 1 A G

[R] How to plot more than 3 sets in Venn Diagrams?

I'm trying to plot Venn diagrams with more than 3 sets (5 actually) in order to describe graphically the genetic variation between populations. I tried the limma library but realised it can only plot 3 sets. Is there any solution? Of course I could plot the chart manually but it'll take too