I’m having a strange problem with my contour plots and I’m hoping someone here will be able to help. I had a dataset that was plotting fine until I decided I wanted to create plots with the data mirrored over the x-axis. This seems to work fine most of the time, but every now and then I get a plot that seems to just ignore a couple of data points when creating the contours. I’ve attached a plot of what I mean. Looking at the arrays the contour plot is created from doesn’t show any obvious problems (there are values there that should be plotted). It’s very strange, any ideas?