How to to control the width of bars in a bar graph in cognos analytics dashboard

[anandcognos]

Hi all,

I am trying to show numerous bars in a bar graph in cognos analytics dashboard. It looks too clumsy having so many bars when the user initially login the dashboard. It is shown in attached bars.png.

My Question - how can I control size (width) of the bars, I want to increase it so that when user opens the dashboard for the first time he should see only 10-15 bars of reasonable width. Later he can use touchpad/mouse to expand or shrink. Point to be noted - I don't want to add any filter condition (top count etc.) to avoid an extra layering for user. Let me know if this is at all possible to control the width of bars for initial display. I will appreciate your help.

Thanks and regards,
Anand