Sebastian Hölz

It should be mentioned that the code does not work for plots with log-axes. This is because it is using the OpenGL renderer.

Sebastian

Just a quick update ... I just installed a 64bit system and was able to get a working 64bit mex file (on Win7) with the following commands:

>> mex -c *.c
>> mex *.obj -output PolygonClip.mexw64

Mexing of course requires that you have a C-compiler running on your system. Prior to issuing the above commands you have to make sure that this compiler is selecte using:
>> mex -setup
I did some testing and could not find any memory leaks.

Cheers

Sebastian

@Jaap:

Use the following syntax:

fig = figure;
h = cline(...);
set(h,'linewidth',5)

The increased line-width will not be displayed, if you use "painters" as renderer for your figure. Therefore, you will have to change it:

set(fig, 'renderer', 'zbuffer')

- or -

set(fig, 'renderer', 'opengl')

Cheers

Sebastian

Hi Sebastian,

thanks for this very useful contribution. You say it is completely compatible with the plot Syntax. However, I receive an error message if I use it with the 'XScale' and related properties:
plotLDS(x,y,'XScale','log')
It would be nice if you could implement similar downsampling for logarithmic axes, with equidistant data points on the log scale. In this case, you will probably have to interpolate. E.g., plotLDS(log10(x),y) produces poor results since too many of the small x values are left out with respect to those at large x.

Great tool. Works like a charm here.

One question:
I would like to calculate the area of a polygon returned after clipping.

Has someone already written a function to do that?
It is not working using Matlab's polyarea, since the format is different and holes have to be considered.