Amusing HG1 plotting bug

In R2014a,

subplot(1,2,1);plot([1 2 3],[2.2e-305, 2.2e-305, 2.2e-305]);subplot(1,2,2);plot([1 2 3],[2.2e-305, 2.2e-305, 2.2e-305+1.6E-306])

The left plot will draw without difficulty; the right plot will be blank. The error appears to occur when the values are not all the same but the maximum difference between values is less than about 1.7E-306: if the values are all the same then the line will draw.

If you add another line to the graph for which the maximum y span becomes greater than that range then both lines will draw.

Could someone try this in R2014b or later?

I encountered this when I got an empty plot for some data near realmin, decided to experiment on where the lower limit on drawing was, and hit inconsistencies, with it happily drawing some lines of constant values that were much absolute value than the non-constant values it was refusing to draw.

Answer 1

[Jan]

The display of the right diagram fails for 2009a and 2011b also. If the renderer is set to OpenGL, only the tickmarks appear, but nothing else.

It works fine in 2015b already.

Answer 2

[Azzi Abdelmalek]

With Matlab R2016a

[Walter Roberson]

Looks like it got fixed then!