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| you should customize the colorbar to your needs! |
As in matlab, in octave things like lines, plot points, axis and so on are basically graphical objects (see the octave manual). To change the properties of some object, you have to know its handle (although for some, e.g. xlim, there are special function to do so).
One thing I stumble across regularly is the colorbar, where i want to change the linewidth and the ticks. The octave manual is not very verbose at this point, but you basically can use the matlab doc.
Example: we create a blank plot with a colorbar. Then we aquire the colorbar handle and play around with the colorbar properties:
figure(1)
caxis([0,50]) %change the range
colorbar()
colormap( summer(250)) %use some different map than jet
%get the colorbar handle
cbh = findobj( gcf(), 'tag', 'colorbar')
set( cbh, %now change some colorbar properties
'linewidth', 2,
'tickdir', 'out',
'ticklength',[0.005,0.005],
'ytick', [0, 10, 23, 42, 50],
'yticklabel',{'zero','ten','23','42','fifty'})
As for all objects, you get get a complete list of the actual colorbars properties with the get function:
get( cbh)
Example : you can change the dimensions (position, height, width) of the colorbar using the position property:
%get the standard value
octave-3.4.2:8> get(cbh,'position')
ans = 0.827500 0.110000 0.046500 0.815000
%set new value
set(cbh,'position',[0.8275 0.11, 0.02325 0.81500])
%(makes a slicker colorbar)