Add a local/global scale button to Ranking

[mbastian]

Then ranking function currently uses only the visible graph for calculating the bounds. That makes comparaison between views difficult because the scale is modified. To address this use case we should have the ability to use ranking on a global scale. A global scale means that the min/max would be computed on the main view rather than on the visible view.

This issue is discussed in this topic:
http://forum.gephi.org/viewtopic.php?f=30&t=1501

[seinecle]

Honestly, that's so very useful. Gephi rocks!

[eduramiba]

Awesome!

[seinecle]

Hi,
I tested the local / global button but and it seems not to work? In the sense, the ranking does not change when the button is toggled from local to global.
To reproduce:

1. generate a dynamic network
2. apply a continuous ranking on node's size, based on degree.
3. select a small time window in the timeline and move it. Observe the change in node's size.
4. re-do steps 2 and 3, this time with the "local / global" button toggled. The nodes sizes are still the same across the timeline.

[mbastian]

It works for me. The generated dynamic network might be a bad example because for most of it's period the degree is the same (only the edge weight changes). Try to navigate the timeline near the end when the degree does change. You should observe the size changing when the button is toggled.

[seinecle]

Hi,

I am not sure? Please see the test file and commentary I put on the forum:
https://forum.gephi.org/viewtopic.php?f=23&t=1754&start=0

[mbastian]

Hi, thanks for digging into that. For some reason the file you sent me is not automatically recognized as dynamic network and the timeline doesn't seem to activate properly. Will check what's going on.

[seinecle]

yes. I noticed that as well. It is caused when I do the following in the
gephi dev version:

• manually create this test file in the data laboratory (manually creating
  the 2 nodes and entering the values for the dynamic attribute)
• exporting this network as a gexf.
• to fix that, I just open the file, go to the data lab and manually change
  the "Infinity" value to "2010.0", as they were originally. But then, the
  problems with the dynamic ranking I mention on Github and the forum are
  caused after that - I mean, even with a clean-not-bugged gexf file.

A++

Clement

---

Clement Levallois
Erasmus University Rotterdam
The Netherlands

pro websitehttp://www.erim.eur.nl/ERIM/People/Person_Details?p_aff_id=4321
/ personal website http://www.clementlevallois.net/

twitter and skype: @seinecle
Discover the NESSHI project: http://www.nesshi.eu

On Tue, Mar 27, 2012 at 5:13 PM, Mathieu Bastian <
reply@reply.github.com

wrote:

Hi, thanks for digging into that. For some reason the file you sent me is
not automatically recognized as dynamic network and the timeline doesn't
seem to activate properly. Will check what's going on.

---

Reply to this email directly or view it on GitHub:
#541 (comment)

[mbastian]

OK I fixed that. An unrelated bug to detect dynamic graphs when only attribute-based.

For our problem I think I found the problem and updated the way we calculate the min and max (and pushed a patch). However for the moment we don't realy support well attribute-based only dynamic networks for ranking. Because we look at enabled filters only you actually can't enable the local scale on your example. Thinking about fixing that...

[seinecle]

I understand and this will need more time for the local scale.
However I tried on the same test file (bug on dyn attribute fixed, thx!), for the global scale, and it seems not to work either (cursor moves along the timeline while a continuous node-resize-ranking is applied on the attribute: the nodes size is not changing).

[mbastian]

I'm working on a patch

[mbastian]

Ok two things I fixed:

• The local/global toggle button can now be activated for attribute-only dynamic graph
• Auto-apply is now working for attribute-only dynamic graph

The min/max seems to be right now. Note that the min/max bound on the ranking panel won't be updated. That to be fixed later. You can see the value with the text label to verify.

[seinecle]

thx! I'll try it asap in one of my projects.

[seinecle]

ok: it works brilliantly. It is extremely insightful to visualize any dynamic attributes, to be able to see how they scale locally relatively to contemporary values, and then, at a touch of a button, how they compare with the global, historical range of values. Major step, thx!!

[MatthiasSL]

Sorry to post on an old ticket, but where is the local/global ranking button located in 0.9.2? I'm trying to follow this tutorial (slide 19), but the button seems to have been (re)moved since then? I seem to recall similar buttons and sliders being relegated to the statistics tab, but I can't find anything there that would correspond to this.

Thanks in advance.