Hi, thank you very much for your reply! I use "start" option in "layout.fruchterman.reingold()" command in the test code to avoid random start. So "set.seed()" does not have any effect on the results, does it?
I guess the algorism has been improved and I need to use old version to get the same result. Maybe I can run secondary R instance with older Igraph to do layout, or just move to the improved layout function. Thanks again. Best regards. 2014-02-12 0:39 GMT+09:00 Gábor Csárdi <[email protected]>: > Hi, you also need to specify the random seed via set.seed. > > That said, you still might get different layouts with different igraph > versions, because we are trying to improve the algorithms. If setting the > seed does not work, then you can generate the layout in the old version, > save the coordinates and then use them with the new version. > > Unfortunately R does not really support using different versions of the same > package at the same time. > > Best, > Gabor > > > On Tue, Feb 11, 2014 at 10:35 AM, HIGUCHI Koichi <[email protected]> > wrote: >> >> Does anybody have any ideas? >> >> Thanks. >> >> 2013-08-29 15:32 GMT+09:00 HIGUCHI Koichi <[email protected]>: >> > Hello. >> > >> > I am using igraph R package and moving from igraph 0.5.5 to 0.6.5. >> > >> > But I found that I can't get the same result from >> > layout.fruchterman.reingold function of 0.6.5 even if I specified the >> > same network object and the same starting positions. The output >> > layouts are different between 0.5.5 and 0.6.5. >> > >> > Is there any way to reproduce the same result as 0.5.5 using 0.6.5?? >> > >> > Here is my test code: >> > http://koichi.nihon.to/psnl/tmp/net_test.r >> > >> > igraph 0.5.5 result: >> > http://koichi.nihon.to/psnl/tmp/055.png >> > >> > igraph 0.6.5 result: >> > http://koichi.nihon.to/psnl/tmp/065.png >> > >> > New layout is not bad at all, but I would like to have the same >> > results when I input the same data. >> > >> > Thank you! And sorry for my poor English. >> > >> > BTW, I am developing a content analysis (text data mining) software >> > using the igraph package. Igraph package is really useful and nice >> > software! Thank you very much for the effort! >> > http://khc.sourceforge.net/en/gallery/ >> > >> > Koichi, Higuchi >> >> _______________________________________________ >> igraph-help mailing list >> [email protected] >> https://lists.nongnu.org/mailman/listinfo/igraph-help > > > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help _______________________________________________ igraph-help mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/igraph-help
