How do I create a plot that is logscale in y and mixed log/linear scale in x?

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David
David 2014-4-16
编辑： dpb 2014-4-17
I am plotting a function on [0,180] that is nearly singular about 0. I want loglog over [0,10] and then semilogy over [10,180]. An example of the function is:
y=1/(1+2*k-cos(x)).^2;
where k is << 1.
  2 个评论
dpb
dpb 2014-4-16
Use
subplot(1,2)
to create two axes then adjust they're positions to fill in the space between, hiding the left y-axis on the RH axes. Set the two axes xlim property appropriately for the two ranges.
dpb
dpb 2014-4-16
编辑：dpb 2014-4-17
Or, the other way would be to keep the one axes object but transform x>10 to log and set the ticks and labels manually.
In this case to plot on the same axis you would
plot(log10(x>10)+10,y(x>10))
to get the offset on the axis, of course.

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