[SOLVED] the node size change is weird

[yhfy2006]

Hi, guys,

I was playing around the dynamics. and there is a problem that I still cannot figure out.
the sizes of the nodes were determined by the freq of each node. The freq of nodes in my graph are growing from year 1991 to 2010, but never reducing. However, when I drag the time line, I can see some of the node sizes are actually decreasing. They are becoming smaller and smaller(but the data of freq is growing), some node like chemistry organic does change its size. I think the reason might be that the gephi is so smart, that it automatically balances the size of each node. But for me I do really need this feature for the project I'm working now.

Can anyone help me out?
here is my gephi file, please check it out.
http://dl.dropbox.com/u/4539517/loggedf ... line.gephi

Thank you!
Changchen

[admin]

Hi,

This is because Gephi computes node sizes on the visible graph only. We call it "local scale". In the new release this week we'll include a "global scale" to compute sizes for the whole graph, thus allowing comparison over time.

[seinecle]

Hi,

The new feature mentioned by Sebastien might not be working?

Using the github version of Gephi, I just opened the file uploaded here by Changchen. Tried the timeline with the global / local scale in both positions. In both cases, I can see nodes growing and diminishing in size.

Next, I tried to create the simplest test file with 2 nodes, 3 periods (2000-2005,2005-2010,2010-2015), and one attribute (see attachment to this post). I selected the values of the attribute such that:
- in "global ranking" mode, both nodes should increase in size.
- in "local ranking" mode, the size of the nodes should invert: "node 2" starts being the smallest, at the second period they should be equal in size, and at the last period it should be the largest.

check:
node 1: <[2000.0, 2005.0, 15]; [2005.0, 2010.0, 20]; [2010.0, 2015.0, 25]>
node 2: <[2000.0, 2005.0, 5]; [2005.0, 2010.0, 20]; [2010.0, 2015.0, 40]>

As far as I can see, Gephi in the current version and in the developer version do not show the correct ranking behavior for this test file. I put a link to this post on the existing issue tracker:
https://github.com/gephi/gephi/issues/541

[yhfy2006]

Thanks so much! the new version works very well. Cool!