| Looking IDL-code for matching XY-lists. [message #14599] |
Thu, 11 March 1999 00:00 |
Octavi Fors
Messages: 13
Registered: March 1999
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Junior Member |
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<pre>Hello all,</pre>
<pre>My question is about the existence of a routine able to perform pattern-matching of</pre>
<pre>XY-coordinate lists. Up to now, I've been using astronomical software</pre>
<pre>such as IRAF. In particular I used IRAF/immatchx/xyxymatch routine which is an IRAF</pre>
<pre>implementation of the E.Groth's algorithm (described in Groth E.J., Astronomical Journal 91, 5, 1986).</pre>
<pre>This approach is based on a similar triangles technique, which is more</pre>
<pre>robust to scale changes, shift and rotation than the usual minimum distance criteria.</pre>
<pre></pre>
<pre>Do you know some IDL-code which performs one of these algorithms, either triangles or</pre>
<pre>minimum distance?
</pre>
<pre>Thanks in advance,</pre>
<pre>Octavi.
</pre>
<pre>--
============================================================ =====
Octavi Fors Aldrich
Astronomy Department</pre>
<pre>Physics Faculty</pre>
<pre>Avgda. Diagonal 647
08028 Barcelona
SPAIN
Telf: 34-934021122
Fax: 34-934021133
e-mail: octavi@fajnm1.am.ub.es
============================================================ ===== </pre>
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