在Gnuplot中如何补救“在此图中不能自动缩放轴范围的可用数据”?

I'm trying to create a color plot of some data. I'm using a script file that I've used before successfully on a similar data set. The data set that worked had equal distant Y data points and this new set I am trying to plot has increasing distance between the Y points and a larger Y range. That is the only significant difference I can find. When I try to plot it, however, I get the error:I'm trying to create a color plot of some data.