title: Pandas scatterplot coming out wonky for one dataframe and perfectly for another
body: <p>I'm trying to create a basic scatterplot with pandas. I have two dataframes with identical structures, column numbers, headers etc. The only difference is that on DF has a couple of dozen rows, and the other has several thousand rows. When I create a scattplot for the first DF I get this, exactly what I want:</p>
  <p><a href="https://i.stack.imgur.com/iLTLL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iLTLL.png" alt="enter image description here" /></a></p>
  <p>But when I enter the same commands for the second, larger dataframe, it comes out wonky (for lack of a better term), specifically the y-axis. It is also not showing all of the data points:</p>
  <p><a href="https://i.stack.imgur.com/uy0fC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uy0fC.png" alt="enter image description here" /></a></p>
  <p>I've messed around with the headings, limits, etc., and I can't get the second scatterplot to work. Any ideas? I'm wondering if there's some property of the second dataframe that I cannot figure out that's throwing it off...</p>