Re: [igraph] average local transitivity

2018-10-27 Thread Raigo Aljand 
Thank you for your help. I solved the problem by scrubbing the graph 
first with


simplify(as.undirected(graph))


27.10.18 11:39 Szabolcs Horvát kirjutas:
Actually, I believe that this is a bug.  I reported it a while ago 
(but I could not recall this immediately).


https://github.com/igraph/igraph/issues/907

I do not consider it a bug in the C interface function, as when 
programming in C, it is typically the user who is expected to supply 
valid input (and it is not the function that is expected to check 
validity).


But in R it is definitely a bug. A high-level interface should just 
not accept invalid input.


On Sat, 27 Oct 2018 at 10:33, Szabolcs Horvát > wrote:


This happens because this is not a simple graph. It has
multi-edges.  The "average" computation ignores these, the "local"
computation does not. I did not verify if the "local" computation
gives reasonable results for multigraphs, though.

On Sat, 27 Oct 2018 at 09:57, Raigo Aljand mailto:ralj...@gmail.com>> wrote:

I added to the attachment the graph that gives me these
results. It is
saved in edgelist format.

27.10.18 10:42 Gábor Csárdi kirjutas:
> Please provide a reproducible example.
>
> Gabor
> On Sat, Oct 27, 2018 at 7:13 AM Raigo Aljand
mailto:ralj...@gmail.com>> wrote:
>> Hello,
>>
>> I have a simple question. I looked at the archives, but it
doesn't seem
>> anyone has asked this nor does it seem to be written in the
documentation.
>>
>> Why do these two give me different results?
>>
>> transitivity(graph, type = "average")
>> 0.3772343
>> mean(transitivity(graph, type = "local"), na.rm = TRUE))
>> 0.2014909
>>
>> I understand the difference between global and local
transitivity and
>> what I read from the internet type="average" should give me
the average
>> local transitivity. Then why does the igraph average give
me a different
>> result from when I calculate the average with R. What is
also strange is
>> that type="average" is either no longer or has never been
documented in
>> the official documentation.
>>
>> If it helps, my graph is directed, but as I understand it,
igraph
>> ignores the direction of the edges.
>>
>> My version of igraph is Ubuntu 18.04 package r-cran-igraph
with version
>> 1.1.2 and R is from the package r-base with version 3.4.4
>>
>> Thank you for your help.
>>
>>
>>
>> ___
>> igraph-help mailing list
>> igraph-help@nongnu.org 
>> https://lists.nongnu.org/mailman/listinfo/igraph-help
> ___
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> https://lists.nongnu.org/mailman/listinfo/igraph-help
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Re: [igraph] average local transitivity

2018-10-27 Thread Szabolcs Horvát 
Actually, I believe that this is a bug.  I reported it a while ago (but I
could not recall this immediately).

https://github.com/igraph/igraph/issues/907

I do not consider it a bug in the C interface function, as when programming
in C, it is typically the user who is expected to supply valid input (and
it is not the function that is expected to check validity).

But in R it is definitely a bug. A high-level interface should just not
accept invalid input.

On Sat, 27 Oct 2018 at 10:33, Szabolcs Horvát  wrote:

> This happens because this is not a simple graph. It has multi-edges.  The
> "average" computation ignores these, the "local" computation does not. I
> did not verify if the "local" computation gives reasonable results for
> multigraphs, though.
>
> On Sat, 27 Oct 2018 at 09:57, Raigo Aljand  wrote:
>
>> I added to the attachment the graph that gives me these results. It is
>> saved in edgelist format.
>>
>> 27.10.18 10:42 Gábor Csárdi kirjutas:
>> > Please provide a reproducible example.
>> >
>> > Gabor
>> > On Sat, Oct 27, 2018 at 7:13 AM Raigo Aljand  wrote:
>> >> Hello,
>> >>
>> >> I have a simple question. I looked at the archives, but it doesn't seem
>> >> anyone has asked this nor does it seem to be written in the
>> documentation.
>> >>
>> >> Why do these two give me different results?
>> >>
>> >> transitivity(graph, type = "average")
>> >> 0.3772343
>> >> mean(transitivity(graph, type = "local"), na.rm = TRUE))
>> >> 0.2014909
>> >>
>> >> I understand the difference between global and local transitivity and
>> >> what I read from the internet type="average" should give me the average
>> >> local transitivity. Then why does the igraph average give me a
>> different
>> >> result from when I calculate the average with R. What is also strange
>> is
>> >> that type="average" is either no longer or has never been documented in
>> >> the official documentation.
>> >>
>> >> If it helps, my graph is directed, but as I understand it, igraph
>> >> ignores the direction of the edges.
>> >>
>> >> My version of igraph is Ubuntu 18.04 package r-cran-igraph with version
>> >> 1.1.2 and R is from the package r-base with version 3.4.4
>> >>
>> >> Thank you for your help.
>> >>
>> >>
>> >>
>> >> ___
>> >> igraph-help mailing list
>> >> igraph-help@nongnu.org
>> >> https://lists.nongnu.org/mailman/listinfo/igraph-help
>> > ___
>> > igraph-help mailing list
>> > igraph-help@nongnu.org
>> > https://lists.nongnu.org/mailman/listinfo/igraph-help
>> ___
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>> igraph-help@nongnu.org
>> https://lists.nongnu.org/mailman/listinfo/igraph-help
>>
>
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Re: [igraph] average local transitivity

2018-10-27 Thread Szabolcs Horvát 
This happens because this is not a simple graph. It has multi-edges.  The
"average" computation ignores these, the "local" computation does not. I
did not verify if the "local" computation gives reasonable results for
multigraphs, though.

On Sat, 27 Oct 2018 at 09:57, Raigo Aljand  wrote:

> I added to the attachment the graph that gives me these results. It is
> saved in edgelist format.
>
> 27.10.18 10:42 Gábor Csárdi kirjutas:
> > Please provide a reproducible example.
> >
> > Gabor
> > On Sat, Oct 27, 2018 at 7:13 AM Raigo Aljand  wrote:
> >> Hello,
> >>
> >> I have a simple question. I looked at the archives, but it doesn't seem
> >> anyone has asked this nor does it seem to be written in the
> documentation.
> >>
> >> Why do these two give me different results?
> >>
> >> transitivity(graph, type = "average")
> >> 0.3772343
> >> mean(transitivity(graph, type = "local"), na.rm = TRUE))
> >> 0.2014909
> >>
> >> I understand the difference between global and local transitivity and
> >> what I read from the internet type="average" should give me the average
> >> local transitivity. Then why does the igraph average give me a different
> >> result from when I calculate the average with R. What is also strange is
> >> that type="average" is either no longer or has never been documented in
> >> the official documentation.
> >>
> >> If it helps, my graph is directed, but as I understand it, igraph
> >> ignores the direction of the edges.
> >>
> >> My version of igraph is Ubuntu 18.04 package r-cran-igraph with version
> >> 1.1.2 and R is from the package r-base with version 3.4.4
> >>
> >> Thank you for your help.
> >>
> >>
> >>
> >> ___
> >> igraph-help mailing list
> >> igraph-help@nongnu.org
> >> https://lists.nongnu.org/mailman/listinfo/igraph-help
> > ___
> > igraph-help mailing list
> > igraph-help@nongnu.org
> > https://lists.nongnu.org/mailman/listinfo/igraph-help
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Re: [igraph] average local transitivity

2018-10-27 Thread Gábor Csárdi 
Please see this:
https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example

G.
On Sat, Oct 27, 2018 at 8:57 AM Raigo Aljand  wrote:
>
> I added to the attachment the graph that gives me these results. It is
> saved in edgelist format.
>
> 27.10.18 10:42 Gábor Csárdi kirjutas:
> > Please provide a reproducible example.
> >
> > Gabor
> > On Sat, Oct 27, 2018 at 7:13 AM Raigo Aljand  wrote:
> >> Hello,
> >>
> >> I have a simple question. I looked at the archives, but it doesn't seem
> >> anyone has asked this nor does it seem to be written in the documentation.
> >>
> >> Why do these two give me different results?
> >>
> >> transitivity(graph, type = "average")
> >> 0.3772343
> >> mean(transitivity(graph, type = "local"), na.rm = TRUE))
> >> 0.2014909
> >>
> >> I understand the difference between global and local transitivity and
> >> what I read from the internet type="average" should give me the average
> >> local transitivity. Then why does the igraph average give me a different
> >> result from when I calculate the average with R. What is also strange is
> >> that type="average" is either no longer or has never been documented in
> >> the official documentation.
> >>
> >> If it helps, my graph is directed, but as I understand it, igraph
> >> ignores the direction of the edges.
> >>
> >> My version of igraph is Ubuntu 18.04 package r-cran-igraph with version
> >> 1.1.2 and R is from the package r-base with version 3.4.4
> >>
> >> Thank you for your help.
> >>
> >>
> >>
> >> ___
> >> igraph-help mailing list
> >> igraph-help@nongnu.org
> >> https://lists.nongnu.org/mailman/listinfo/igraph-help
> > ___
> > igraph-help mailing list
> > igraph-help@nongnu.org
> > https://lists.nongnu.org/mailman/listinfo/igraph-help
> ___
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> igraph-help@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/igraph-help

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Re: [igraph] average local transitivity

2018-10-27 Thread Raigo Aljand 
I added to the attachment the graph that gives me these results. It is 
saved in edgelist format.


27.10.18 10:42 Gábor Csárdi kirjutas:

Please provide a reproducible example.

Gabor
On Sat, Oct 27, 2018 at 7:13 AM Raigo Aljand  wrote:

Hello,

I have a simple question. I looked at the archives, but it doesn't seem
anyone has asked this nor does it seem to be written in the documentation.

Why do these two give me different results?

transitivity(graph, type = "average")
0.3772343
mean(transitivity(graph, type = "local"), na.rm = TRUE))
0.2014909

I understand the difference between global and local transitivity and
what I read from the internet type="average" should give me the average
local transitivity. Then why does the igraph average give me a different
result from when I calculate the average with R. What is also strange is
that type="average" is either no longer or has never been documented in
the official documentation.

If it helps, my graph is directed, but as I understand it, igraph
ignores the direction of the edges.

My version of igraph is Ubuntu 18.04 package r-cran-igraph with version
1.1.2 and R is from the package r-base with version 3.4.4

Thank you for your help.



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Re: [igraph] average local transitivity

2018-10-27 Thread Gábor Csárdi 
Please provide a reproducible example.

Gabor
On Sat, Oct 27, 2018 at 7:13 AM Raigo Aljand  wrote:
>
> Hello,
>
> I have a simple question. I looked at the archives, but it doesn't seem
> anyone has asked this nor does it seem to be written in the documentation.
>
> Why do these two give me different results?
>
> transitivity(graph, type = "average")
> 0.3772343
> mean(transitivity(graph, type = "local"), na.rm = TRUE))
> 0.2014909
>
> I understand the difference between global and local transitivity and
> what I read from the internet type="average" should give me the average
> local transitivity. Then why does the igraph average give me a different
> result from when I calculate the average with R. What is also strange is
> that type="average" is either no longer or has never been documented in
> the official documentation.
>
> If it helps, my graph is directed, but as I understand it, igraph
> ignores the direction of the edges.
>
> My version of igraph is Ubuntu 18.04 package r-cran-igraph with version
> 1.1.2 and R is from the package r-base with version 3.4.4
>
> Thank you for your help.
>
>
>
> ___
> igraph-help mailing list
> igraph-help@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/igraph-help

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[igraph] average local transitivity

2018-10-26 Thread Raigo Aljand 

Hello,

I have a simple question. I looked at the archives, but it doesn't seem 
anyone has asked this nor does it seem to be written in the documentation.


Why do these two give me different results?

transitivity(graph, type = "average")
0.3772343
mean(transitivity(graph, type = "local"), na.rm = TRUE))
0.2014909

I understand the difference between global and local transitivity and 
what I read from the internet type="average" should give me the average 
local transitivity. Then why does the igraph average give me a different 
result from when I calculate the average with R. What is also strange is 
that type="average" is either no longer or has never been documented in 
the official documentation.


If it helps, my graph is directed, but as I understand it, igraph 
ignores the direction of the edges.


My version of igraph is Ubuntu 18.04 package r-cran-igraph with version 
1.1.2 and R is from the package r-base with version 3.4.4


Thank you for your help.



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