X axis scale and multiple graph sizes

Hi,

I have a series of 10+ area charts which are cross sections along a profile of a river, therefore to compare them I need them all to be at the same scale and size on both the x and y axis and when I make the image smaller .

At the moment I can easily change the y axis using the minimum and maximum so they are all the same, however I can't change the x axis. The data that I am using is collected at different points along the 'x axis' and so there isn't a uniform interval with my data. Is there anyway I can adjust it so the scale is 0.1, 0.2, 0.3 etc.

Also, how can I make all the graphs uniformly smaller to a specific size without altering the x and y axis scales?

Thanks

Ah that may be an issue as I definitely need an area chart. However, changing the x axis isn't imperative as long as my charts are all the same size to show its scale against one another. Is there anyway to uniformly change its size so they are all at the same scale?