MATLAB: Log(x) equation does not plot correctly

animateanimationcometloglog(x)MATLABmatlab functionnegativeplot

Hello,
Here is my code:
x = -5:0.05:10;
y=log(x);
plot(x,y)
comet(x,y)
It won't let it animate. When i put x = 1:0.05:10; it does animate , but shouldn't matlab do it anyway? Why doesn't it animate from 1 to 10 even if i put -5 , every other function works fine? Maybe comet doesn't work with it?
If you have any ideas, please help.

Best Answer

Perhaps reading the error message you get on the screen will help explain the issue:
Warning: Imaginary parts of complex X and/or Y arguments ignored.
Error using matlab.graphics.axis.Axes/set
Complex values are not supported.
When you take the log of numbers <0, you result is complex. Numbers >0 are not. Comet does not support complex numbers. Consider instead using the magnitude: comet(x,abs(y)) or the real part: comet(x,real(y))
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