Advice on boxes plot and setting xrange with a time axis

[Daniel F. <boy...@gm...>]

Hello,

I have a plot boxes plot which is value of something at every month of  
the year. I want to change the xrange of the plot,

http://www.boyfarrell.com/forums/gnuplot/plot-bars.pdf

I want to be able to see all the box in the plot range (January is  
clipped and December is too large), this means I needs to set the  
xrange to be slightly larger than the data range i.e. from Jan-1 to Dec 
+1. However, my xaxis is time in months numbers, 1,2,3 etc... I have  
tried a few methods of setting the xrange and the xtic placement my  
can't get it to work.

Here is the data and the plotting script, can anybody help?
http://www.boyfarrell.com/forums/gnuplot/bars.txt
http://www.boyfarrell.com/forums/gnuplot/plot-bars.txt

Regards,

Dan.