如何在MATLAB图中更改轴上显示的数字的格式？

I actually have 3 questions:

我实际上有3个问题：

I have a plot with data that is in the thousands and my plot's axis is diplaying the tick marks as .4 .8 1.0 1.2 and a *10^4 in the lower right. This is a little annoying. I h