Re: [R] How to form groups for this specific problem?
You're welcome, Satish.
Yes, questions that are seeking solutions in R code are appropriate for
this group. It's helpful if you provide sample data (for example, using
dput()) and sample R code that folks can use. And it's helpful if you show
the results that you are hoping to achieve (as you did).
Jean
On Mon, Mar 28, 2016 at 1:15 PM, Satish Vadlamani <
satish.vadlam...@gmail.com> wrote:
> Jean:
> Wow. Thank you so much for this. I will read up igraph and then see if
> this is going to work for me for the larger dataset.
>
> Thanks for the wonderful snippet code you wrote. Basically, the
> requirement is this:
> TLA1 (Top Level Assembly) and its components should belong to the same
> group. If a component belongs to a different TLA (say TLA2), then that TLA1
> and all of its components should belong to the same as that of TLA1.
>
> Are these types of questions appropriate for this group?
>
> Thanks,
> Satish
>
>
> On Mar 28, 2016 9:10 AM, "Adams, Jean" wrote:
>
>> Satish,
>>
>> If you rearrange your data into a network of nodes and edges, you can use
>> the igraph package to identify disconnected (mutually exclusive) groups.
>>
>> # example data
>> df <- data.frame(
>> Component = c("C1", "C2", "C1", "C3", "C4", "C5"),
>> TLA = c("TLA1", "TLA1", "TLA2", "TLA2", "TLA3", "TLA3")
>> )
>>
>> # characterize data as a network of nodes and edges
>> nodes <- levels(unlist(df))
>> edges <- apply(df, 2, match, nodes)
>>
>> # use the igraph package to identify disconnected groups
>> library(igraph)
>> g <- graph(edges)
>> ngroup <- clusters(g)$membership
>> df$Group <- ngroup[match(df$Component, nodes)]
>> df
>>
>> Component TLA Group
>> 1C1 TLA1 1
>> 2C2 TLA1 1
>> 3C1 TLA2 1
>> 4C3 TLA2 1
>> 5C4 TLA3 2
>> 6C5 TLA3 2
>>
>> Jean
>>
>> On Sun, Mar 27, 2016 at 7:56 PM, Satish Vadlamani <
>> satish.vadlam...@gmail.com> wrote:
>>
>>> Hello All:
>>> I would like to get some help with the following problem and understand
>>> how
>>> this can be done in R efficiently. The header is given in the data frame.
>>>
>>> *Component, TLA*
>>> C1, TLA1
>>> C2, TLA1
>>> C1, TLA2
>>> C3, TLA2
>>> C4, TLA3
>>> C5, TLA3
>>>
>>> Notice that C1 is a component of TLA1 and TLA2.
>>>
>>> I would like to form groups of mutually exclusive subsets and create a
>>> new
>>> column called group for this subset. For the above data, the subsets and
>>> the new group column value will be like so:
>>>
>>> *Component, TLA, Group*
>>> C1, TLA1, 1
>>> C2, TLA1, 1
>>> C1, TLA2, 1
>>> C3, TLA2, 1
>>> C4, TLA3, 2
>>> C5, TLA3, 2
>>>
>>> Appreciate any help on this. I could have looped through the observations
>>> and tried some logic but I did not try that yet.
>>>
>>> --
>>>
>>> Satish Vadlamani
>>>
>>> [[alternative HTML version deleted]]
>>>
>>> __
>>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
>>
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to form groups for this specific problem?
Jean:
Wow. Thank you so much for this. I will read up igraph and then see if this
is going to work for me for the larger dataset.
Thanks for the wonderful snippet code you wrote. Basically, the requirement
is this:
TLA1 (Top Level Assembly) and its components should belong to the same
group. If a component belongs to a different TLA (say TLA2), then that TLA1
and all of its components should belong to the same as that of TLA1.
Are these types of questions appropriate for this group?
Thanks,
Satish
On Mar 28, 2016 9:10 AM, "Adams, Jean" wrote:
> Satish,
>
> If you rearrange your data into a network of nodes and edges, you can use
> the igraph package to identify disconnected (mutually exclusive) groups.
>
> # example data
> df <- data.frame(
> Component = c("C1", "C2", "C1", "C3", "C4", "C5"),
> TLA = c("TLA1", "TLA1", "TLA2", "TLA2", "TLA3", "TLA3")
> )
>
> # characterize data as a network of nodes and edges
> nodes <- levels(unlist(df))
> edges <- apply(df, 2, match, nodes)
>
> # use the igraph package to identify disconnected groups
> library(igraph)
> g <- graph(edges)
> ngroup <- clusters(g)$membership
> df$Group <- ngroup[match(df$Component, nodes)]
> df
>
> Component TLA Group
> 1C1 TLA1 1
> 2C2 TLA1 1
> 3C1 TLA2 1
> 4C3 TLA2 1
> 5C4 TLA3 2
> 6C5 TLA3 2
>
> Jean
>
> On Sun, Mar 27, 2016 at 7:56 PM, Satish Vadlamani <
> satish.vadlam...@gmail.com> wrote:
>
>> Hello All:
>> I would like to get some help with the following problem and understand
>> how
>> this can be done in R efficiently. The header is given in the data frame.
>>
>> *Component, TLA*
>> C1, TLA1
>> C2, TLA1
>> C1, TLA2
>> C3, TLA2
>> C4, TLA3
>> C5, TLA3
>>
>> Notice that C1 is a component of TLA1 and TLA2.
>>
>> I would like to form groups of mutually exclusive subsets and create a new
>> column called group for this subset. For the above data, the subsets and
>> the new group column value will be like so:
>>
>> *Component, TLA, Group*
>> C1, TLA1, 1
>> C2, TLA1, 1
>> C1, TLA2, 1
>> C3, TLA2, 1
>> C4, TLA3, 2
>> C5, TLA3, 2
>>
>> Appreciate any help on this. I could have looped through the observations
>> and tried some logic but I did not try that yet.
>>
>> --
>>
>> Satish Vadlamani
>>
>> [[alternative HTML version deleted]]
>>
>> __
>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to form groups for this specific problem?
Satish,
If you rearrange your data into a network of nodes and edges, you can use
the igraph package to identify disconnected (mutually exclusive) groups.
# example data
df <- data.frame(
Component = c("C1", "C2", "C1", "C3", "C4", "C5"),
TLA = c("TLA1", "TLA1", "TLA2", "TLA2", "TLA3", "TLA3")
)
# characterize data as a network of nodes and edges
nodes <- levels(unlist(df))
edges <- apply(df, 2, match, nodes)
# use the igraph package to identify disconnected groups
library(igraph)
g <- graph(edges)
ngroup <- clusters(g)$membership
df$Group <- ngroup[match(df$Component, nodes)]
df
Component TLA Group
1C1 TLA1 1
2C2 TLA1 1
3C1 TLA2 1
4C3 TLA2 1
5C4 TLA3 2
6C5 TLA3 2
Jean
On Sun, Mar 27, 2016 at 7:56 PM, Satish Vadlamani <
satish.vadlam...@gmail.com> wrote:
> Hello All:
> I would like to get some help with the following problem and understand how
> this can be done in R efficiently. The header is given in the data frame.
>
> *Component, TLA*
> C1, TLA1
> C2, TLA1
> C1, TLA2
> C3, TLA2
> C4, TLA3
> C5, TLA3
>
> Notice that C1 is a component of TLA1 and TLA2.
>
> I would like to form groups of mutually exclusive subsets and create a new
> column called group for this subset. For the above data, the subsets and
> the new group column value will be like so:
>
> *Component, TLA, Group*
> C1, TLA1, 1
> C2, TLA1, 1
> C1, TLA2, 1
> C3, TLA2, 1
> C4, TLA3, 2
> C5, TLA3, 2
>
> Appreciate any help on this. I could have looped through the observations
> and tried some logic but I did not try that yet.
>
> --
>
> Satish Vadlamani
>
> [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to form groups for this specific problem?
It isn't at all clear to me how you are creating the groups. They aren't the unique combinations of Component and TLA. They might be based only on TLA value: in your example TLA1 and TLA2 form one group, and TLA3 the other. Without understanding your logic, I can't replicate it with R code. Sarah On Sun, Mar 27, 2016 at 8:56 PM, Satish Vadlamani wrote: > Hello All: > I would like to get some help with the following problem and understand how > this can be done in R efficiently. The header is given in the data frame. > > *Component, TLA* > C1, TLA1 > C2, TLA1 > C1, TLA2 > C3, TLA2 > C4, TLA3 > C5, TLA3 > > Notice that C1 is a component of TLA1 and TLA2. > > I would like to form groups of mutually exclusive subsets and create a new > column called group for this subset. For the above data, the subsets and > the new group column value will be like so: > > *Component, TLA, Group* > C1, TLA1, 1 > C2, TLA1, 1 > C1, TLA2, 1 > C3, TLA2, 1 > C4, TLA3, 2 > C5, TLA3, 2 > > Appreciate any help on this. I could have looped through the observations > and tried some logic but I did not try that yet. > > -- > > Satish Vadlamani > > [[alternative HTML version deleted]] > And please don't post in HTML. __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
