<div dir="ltr">Hi Dave,<div><br></div><div>Yes, it is also necessary.<br></div><div><a href="https://github.com/sanak/pgrouting4w/commit/fa8c5ff559344653a464f2c3416de0ef8c4ce393" target="_blank">https://github.com/sanak/pgrouting4w/commit/fa8c5ff559344653a464f2c3416de0ef8c4ce393</a></div>
<div><br></div><div>By the way, in my environment(currently use MacOSX),</div><div>your 2nd result was as follows, and it is not same as 1st one.</div><div>
====</div><div><div>pgrouting-workshop=# SELECT seq, id FROM pgr_tsp('{{0,0.1,0.3,0.3},{0.1,0,0.2,0.2},{0.3,0.2,0,0.2},{0.3,0.2,0.2,0}}'::float8[],1);</div><div> seq | id </div><div>-----+----</div><div> 0 | 1</div>
<div> 1 | 0</div><div> 2 | 3</div><div> 3 | 2</div><div>(4 rows)</div><div>====</div></div><div><br></div><div style>In your environment, is there no problem?</div><div style><br></div><div style>Regards,</div><div style>
<br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/7/19 Dave Potts <span dir="ltr"><<a href="mailto:dave.potts@pinan.co.uk" target="_blank">dave.potts@pinan.co.uk</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>On 19/07/13 15:08, Dave Potts wrote:<br>
I have found the problem, in the function int findEulerianPath(TSP
*tsp) in the file src/tsp/src/tsplib.c<br>
<br>
<br>
the code says something like <br>
int d,i,j,k,l,a<br>
<br>
The varible d is used to compare against a variable of type
DTYPE, with the result that there seems to be an underflow/overflow
issue<br>
<br>
so the code needs to be changed to<br>
<br>
int *mst, *arc;<br>
DTYPE d;<br>
int i, j, k, l, a;<br>
int n, *iorder, *jorder;<br>
<br>
having done, I now get the expected result.<br>
<br>
Dave.<br>
</div>
<blockquote type="cite">
<div>On 19/07/13 13:02, sanak wrote:<br>
Hi Sanak<br>
<br>
Thanks for your help<br>
<br>
I had the float version in my source base I changed it to a
double, I have done a make clean, install restarted the service,
still have the same problem :-(<br>
<br>
Dave<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Dave, Stephen,
<div><br>
</div>
<div>I encountered the same issue(<a href="https://github.com/pgRouting/pgrouting/issues/159" target="_blank">https://github.com/pgRouting/pgrouting/issues/159</a> ),</div>
<div> so, I sent the pull request(<a href="https://github.com/pgRouting/pgrouting/pull/160" target="_blank">https://github.com/pgRouting/pgrouting/pull/160</a> ).</div>
<div><br>
</div>
<div>> Stephen</div>
<div>Could you check my pull request?</div>
<div><br>
</div>
<div>Thanks,</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2013/7/19 Dave Potts <span dir="ltr"><<a href="mailto:dave.potts@pinan.co.uk" target="_blank">dave.potts@pinan.co.uk</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I have
been trying to do some work which requires the tsp, some
of my values have values of 0.1 in the dataset, I keep
getting odd results.<br>
<br>
So I tried a well known example from the pgr _tsp
distance page and it work as expected.<br>
<br>
I then repeated the same example but reduced all of the
distance by a factor off 10 and got an error. Unless I
have make a mistake in my understanding of the manual
page, I think we might a problem where<br>
<br>
-- version used<br>
select pgr_version();<br>
pgr_version<br>
-------------------------------------------------<br>
(2.0.0-dev,v2.0.0-rc1,0,bf13fd7,develop,1.48.0)<br>
-- Use a example get a result set<br>
SELECT seq, id FROM
pgr_tsp('{{0,1,3,3},{1,0,2,2},{3,2,0,2},{3,2,2,0}}'::float8[],1);<br>
seq | id<br>
-----+----<br>
0 | 1<br>
1 | 2<br>
2 | 3<br>
3 | 0<br>
(4 rows)<br>
-- repeat for reduce everything by scale factor of 10 ie
1.0 becomes 0.1 etc<br>
<br>
SELECT seq, id FROM
pgr_tsp('{{0,0.1,0.3,0.3},{0.1,0,0.2,0.2},{0.3,0.2,0,0.2},{0.3,0.2,0.2,0}}'::float8[],1);<br>
<br>
ERROR: Error TSP fail to findEulerianPath, check your
distance matrix is valid.<br>
<br>
As far as I understand it my matrix has 0's on the leading
diangonal and [a,b] == [b,a]<br>
<br>
Dave.<br>
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<br>
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</div>
-- <br>
<div dir="ltr">
<div>Ko Nagase (sanak)</div>
<div>Georepublic Japan</div>
<div>mail: <a href="mailto:geosanak@gmail.com" target="_blank">geosanak@gmail.com</a> </div>
<div> <a href="mailto:nagase@georepublic.co.jp" target="_blank">nagase@georepublic.co.jp</a></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><div>Ko Nagase (sanak)</div><div>Georepublic Japan</div><div>mail: <a href="mailto:geosanak@gmail.com" target="_blank">geosanak@gmail.com</a> </div>
<div> <a href="mailto:nagase@georepublic.co.jp" target="_blank">nagase@georepublic.co.jp</a></div></div>
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