loglog plots don't always use log scale
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Dan Schult
on 21 Oct 2020
Commented: Dimas Tiar
on 29 Jun 2023
Sometimes using loglog does not change the scale to a logarithmic scale.
h=10.^-(0:5);
err=[1.4 1.04 1.004 1.0004 1.00004 1.000004];
loglog(h,err,'-o')
The y-axis is not a log-scale. Indeed, using loglog(err, err) makes both axes not use a log scale.
How does loglog choose? Or is this a bug?
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Accepted Answer
Walter Roberson
on 21 Oct 2020
The y axis is on log scale. Compare the distance between the bottom (1.0) and the tick above it (1.05) to the distance between the top two ticks (1.35 to 1.4). Obvious difference.
2 Comments
Dimas Tiar
on 29 Jun 2023
Hi, How do I equalize the log scale in the y axis as it does in the x axis? How we make the y axis also on log 10 scale (to be similar with the x axis) even though the y axis value range is much smaller than x axis?
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