Hello Paolo,<br><br><div class="gmail_quote"><div class="im">On Tue, Feb 14, 2012 at 3:00 PM, Paolo Cavallini <span dir="ltr"><<a href="mailto:cavallini@faunalia.it" target="_blank">cavallini@faunalia.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all.<br>
Just tested the new plugin, quite nice. Where do I find more info about the algorithms used?<br></blockquote></div><div><br>There
is no specialized algorithm, the procedure in which pixel values are
computed is explained in the Context Help. Its just a linear assignment,
say for a buffer of 10 pixels, and decay of 0, the central pixel has a
value of 1, 2nd from center pixel has 0.9 and so n upto the 10th pixel
with value 0. Its then added along for point by point. So the more the
number of points, the more the pixels' value. <a href="http://idvux.wordpress.com/2009/08/21/heat-maps/" target="_blank">http://idvux.wordpress.com/2009/08/21/heat-maps/</a>
has a nice explanation of various types of heatmaps (value
interpolated, frequency). This tool generated a frequency heatmap. So
there is not much of algo space left. <br>
<br>Somethings like smoothing of boundaries can be done, but that would
be more of visual appeal without mathematical basis I think (correct me
if wrong).<br><br> </div><div class="im"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Moreover, would it be possible to integrate it in the main interpolation command?<br>
Thanks.<span></span><br></blockquote></div></div><br>The code is completely self contained, hence cannot be accessed from outside.<div class="yj6qo ajU"><div id=":1j2" class="ajR" tabindex="0"><img class="ajT" src="images/cleardot.gif"></div>
</div><br><br clear="all"><br>-- <br>Regards<br>Arunmozhi<br>Twitter: @tecoholic<br>Website: <a href="http://arunmozhi.in" target="_blank">http://arunmozhi.in</a><br>IRC Nick: teco<br><br>