First of all I have all values 0 on my bar chart. But bars are centered vertically on the chart. See below:

I want to align bars to the bottom if all values are zero.
SOLVED::Another problem is about rounding values on Value Axis.

For the chart above, there are just 0 and 1 values. However it has fractal values in the chart. I want only 0 and 1 to be visible. It occurs even on min:0 max:10, and shows labels such as 2.5 5.0 7.5 10.0, in this case I want just rounded integers to be visible.
Any ideas?

Thanks.