How to define where x axis intercepts y axis

[jemma]

I want to plot a bar plot using matlab.
For example:

x = [0.4 0.5 0.7 0.2 0.1 0.8]
bar(x)
ylim([0 1])

now I want the x-axis to intercept the y-axis at 0.5 so that any bars >0.5 lie above the x-axis and any bars <0.5 are below.

Is this possible?
Thanks.

 

[MATLABdude]

I'd look into overlaying a horizontal line on top of your bar graph:
http://www.mathworks.com/help/techdoc/creating_plots/f10-19972.html#f10-22444