RE: Bar plot with logarithmic scale on y-axis

[Damian Harty]

> I'd like to plot my data in a bar chart with log scale on the y-axis. Here's 
> what I tried:

> h = bar ([1:10]',rand(10,1));
> set (gca,'yscale','log');

> The first command produces the expected bar chart. The second command scales
> the y-axis as expected, but the bars in the plot get screwed up. Can someone
> please help me with this?

I think the plotting algorithm tries to draw the boxes for the bars from zero 
and flags a logarithm domain error at this point. Excel handles this 
"intuitively" but alas Octave only draws the top of the bar.

I have 3 options to offer:

1) Edit the code to do what you want (be careful what you wish for)
2) Make a new variable that is the log of your data and plot that on 
appropriately annotated scales
3) Plot the data in Excel or similar




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