modify scale of axis in ggplot2 plots

[niederle]

I would like to fix the y axis scale on Bar plot template, but that doesnt seem to be so easy.
Something like
p <- p + scale_y_continuous(limits=c(0,8000))
print(p) # or last_plot() + ylim(0,1000)
is possible but if the limits are smaller of what is plotted then that bar or error bar is not plotted at all.

E.g. plotting bars that vary between 95% and 105% doesnt look nice because the ggplot2 auto scale is set to 0 - ~110, whereas a scale of 90 - 110 would be much better to show difference in this smaller range.

I tried several things, went to forums and gglot2 descriptions, and found that others had same difficulties to manipulate the axes, and somehow I couldnt establish a way to handle flexible/manual axis scale for the Bar plot template. I think for factorized density plot and others it is a similar problem!?

(Martin)