I have a bar3 plot and I want to view it in 2 dimensions. In most cases it's working properly but occasionally the 2D view of the plot has one entry that looks as if its value is zero but when looking at it in 3 dimensions it's not. In other words I occasionally get a black square (I have the colormap to grayscale) that doesn't belong.
I've checked and rechecked the data and it shouldn't appear this way. Does anyone know what the problem might be?