Base-2 logarithmic scale on bar diagram
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Hello,
I would like to plot a bar diagram but with a base-2 logarithmic scale on y-axis. Is it possible to have a logarithmic scale with the bar function ? Can someone help me ?
Here is an example of a diagram with a linear scale on which I would like to use a base-2 logarithmic scale on y-axis
figure;
set(gcf,'color','w');
x=[1 2 3 4];
y= [3 0.76 .82
4.2 1.1 0.9
2.5 0.75 0.85
0.8 0.9 3.5];
b= bar (x,y,1);
1 Comment
dpb
on 16 Nov 2022
What, specifically, is the expected result to look like? Since
log2(y)=log10(y)/log10(2)
by definition, it's a linear scaling so just using
...
hB=bar(x,y,1);
hAx=gca; hAx.YScale='log';
will produce the same relative bar heights as those if you were to mess around with the log2() values and scale them.
Accepted Answer
David Hill
on 16 Nov 2022
A logarithmic scale does not matter what the base is. You can change the markers to whatever you want (powers of two).
figure;
set(gcf,'color','w');
x=[1 2 3 4];
y= [3 0.76 .82
4.2 1.1 0.9
2.5 0.75 0.85
0.8 0.9 3.5];
b= bar (x,y,1);
set(gca, 'YScale', 'log')
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