Re: Figure with thick frame

[Pantxo]

Matthias Brennwald-3 wrote
> I am trying to make a figure that uses a somewhat thicker line for the 
> frame / axes than the lines used for the grid. I tried plotting a 
> rectangle with thick lines to mimic the figure frame. This almost works 
> perfectly, but the lower right corner does not come out well. The lines 
> don't meet nicely (see attachment).
> 
> Here's an example to illustrate the problem:
> 
>       plot (rand(1,5),'-o' , 'Linewidth',2); % plot some data
>       grid on % show grid lines (thin)
>       r = axis(); % find the coordinates of the figure frame
>       rectangle ( 'Position',[r(1) r(3) r(2)-r(1) r(4)-r(3)] , 'Linewidth',5 
> ) % plot the figure frame using thick lines
>       print ('test.png') % save to file
> 
> Any ideas how to make this work?
> 
> test.png (29K)
> <http://octave.1599824.n4.nabble.com/attachment/4687658/0/test.png>

Yes, it's a pity that you must use such a trick when you want axes lines
width different from grids line width. I think the following (using a line
with one more segment to have proper line join) instead of a rectangle
should do the job:

...
line ( [r(1) r(2) r(2) r(1) r(1) r(2)] , [r(3) r(3) r(4) r(4) r(3) r(3)],
'Linewidth',5) ## , "linejoin", "miter" ) 
...

The commented option ("linejoin") will be necessary when you switch to
Octave 4.4 (upcoming release) or corners will be round by default.

Pantxo



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