Re: [igraph] Labeling vertices

[Tamas Nepusz]

Okay, the bug is here:

["" if is_hashtag(vertex) else g.vs["name"] for vertex in g.vs]

You need vertex["name"] in place of g.vs["name"] -- right now you are querying
the name of all the vertices if the current vertex contains a hashtag. It is
easy to overlook.

T.

On 01/08, Ahmed Abdeen Hamed wrote:
> Yes, of course!
> 
> Attached is a tiny dataset that reproduces the problem, and the script that
> I am using to generate the network. And, you are right indeed. Somehow, the
> vertices are visualized as a list not as individuals as shown down here:
> [image: Inline image 1]
> 
> Thanks very much,
> 
> -Ahmed
> 
> 
> 
> 
> On Thu, Jan 8, 2015 at 6:53 PM, Tamas Nepusz <address@hidden> wrote:
> 
> > Judging from your earlier screenshot, it seems like the labels are *lists*
> > of
> > hashtags and not individual hashtags (as the function assumes). Can you
> > post
> > a small, reproducible, self-contained example that demonstrates the
> > problem?
> >
> > T.
> >
> > On 01/08, Ahmed Abdeen Hamed wrote:
> > > Yes, thank you!
> > >
> > > The function is really simple, it works correctly in other context except
> > > this one. Here is the implementation:
> > >
> > > def is_hashtag(vertex):
> > >     return vertex["name"].startswith("#")
> > >
> > > -Ahmed
> > >
> > >
> > >
> > > On Thu, Jan 8, 2015 at 4:59 PM, Tamas Nepusz <address@hidden> wrote:
> > >
> > > > Have you confirmed that your is_hashtag() function is working
> > correctly?
> > > > For
> > > > one thing, it seems to me that each vertex contains multiple hash
> > tags, so
> > > > it
> > > > could be the case that is_hashtag() is simply returning False for all
> > the
> > > > vertices.
> > > >
> > > > T.
> > > >
> > > > On 01/08, Ahmed Abdeen Hamed wrote:
> > > > > It is still shows the hashtags even though they shouldn't. Here is
> > small
> > > > > screenshot that shows that there are hashtag appearing. What am I
> > doing
> > > > > wrong?
> > > > >
> > > > > -Ahmed
> > > > >
> > > > >
> > > > > [image: Inline image 1]
> > > > >
> > > > > On Thu, Jan 8, 2015 at 4:15 PM, Tamas Nepusz <address@hidden>
> > wrote:
> > > > >
> > > > > > > visual_style["vertex_label"] = ["" if is_hashtag(vertex) else
> > > > > > > vertex["name"] for vertex in g.vs]
> > > > > > >
> > > > > > > However, there is a glitch. Suggestions?
> > > > > > Your code seems okay; what is the problem with it? How did you try
> > to
> > > > plot
> > > > > > the
> > > > > > graph and what glitch did you see?
> > > > > >
> > > > > > --
> > > > > > T.
> > > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > T.
> > > >
> >
> > --
> > T.
> >



> #!/usr/local/bin/python
> import csv
> import igraph
> from igraph import *
> from itertools import chain
> #reader = csv.DictReader(open("wekarules-k-k-h-all.csv"), dialect="excel")
> #reader = csv.DictReader(open("drug-hash-4viz.csv"), dialect="excel")
> #reader = csv.DictReader(open("mjd.ALL.2162014.csv"), dialect="excel")
> reader = csv.DictReader(open("network-sample-problematic.csv"), 
> dialect="excel")#network-sample-problematic.csv#kh-all-graph-validated.csv
> g = igraph.Graph.DictList(vertices=None, edges=reader)
> #del g.es()[None]
> g.to_undirected()
> g.simplify()
> 
> layout = g.layout_fruchterman_reingold() 
> 
> def is_hashtag(vertex):
>     return vertex["name"].startswith("#")
>                     
> visual_style = {}
> 
> visual_style["vertex_color"] = ["red" if is_hashtag(vertex) else "blue" for 
> vertex in g.vs]
> visual_style["vertex_size"] = [11 if is_hashtag(vertex) else 23 for vertex in 
> g.vs]
> visual_style["vertex_label"] = ["" if is_hashtag(vertex) else g.vs["name"] 
> for vertex in g.vs]
> visual_style["vertex_label_size"] = 7
> visual_style["edge_width"] = 1
> visual_style["edge_color"] =["pink"]
> visual_style["layout"] = layout
> visual_style["bbox"] = (1700, 1700)
> visual_style["margin"] = 50
> plot(g, 
> "/Users/ahamed/Publications/JBI-SI-GoodTemplate/ddi-network-vis-kh-labeled.pdf",**visual_style)
> #plot(g, **visual_style)

> source,target
> benadryl,#zzzzz
> benadryl,#zzzzzzz
> benadryl,advil
> benadryl,flonase
> benadryl,ibuprofen
> carafate,#apc
> carafate,#gastrointestinaltract
> carafate,#heyjai
> carafate,#islamic
> carafate,#lilalo
> carafate,#mejordisco
> carafate,#nexium
> carafate,#ulcers
> carafate,nexium
> carafate,protonix
> clarinex,#aids
> clarinex,#ipad
> clarinex,#skinswelling
> clarinex,claritin
> claritin,#achhhuu
> claritin,#allergies
> claritin,#allergiescansuckad
> claritin,#boom
> claritin,#dickforlunchladies
> claritin,#diflucan
> claritin,#dogsbehavingbadly
> claritin,#fastbreak2!
> claritin,#fuckallergies

-- 
T.