[Gnuplot-info] 'column scatter plot'

[Adrian G. <har...@gm...>]

Hello,

I would like to plot (gene expression) values of two groups, say control 
and treated. Each group has several samples. I assign x-value 1 to group 
'control' and 2 to 'treated'.

Example for group 1:
x	expression
1	3
1	5
1	8
1	3.5
1	3.4
1	3.3
1	3.7
1	10
1	6
1	7
1	6.5
(I set y-range to [0:10])

Unfortunately, symbols of expression (y) values that are very close 
overlap, thus, obscuring each other. It would be better to plot it like 
in the graph given here:
http://www.graphpad.com/faq/viewfaq.cfm?faq=145

Can that be done in gnuplot as well? Maybe using an 'if' command? Note: 
There are too many values to do it manually, I'm afraid.

Grateful for any comments,

adrian