Re: [igraph] interactive plot on shiny

[Gábor Csárdi]

I have no idea what nearPoints is. But if you want to use the raw
coordinates in the igraph plot, then you will need you do rescale =
FALSE in the igraph plot, and maybe you'll also need to set xlim and
ylim manually.

Gabor

On Wed, Apr 12, 2017 at 8:09 PM, Wenliang Zhao
<address@hidden> wrote:
> Hi Gabor,
>
> Thanks for your answer. How can I set the column names of layout so that
> nearPoints can match x,y axes name with layout columns? I probably want to
> make a dataframe df with column (x, y, nodename, other_info), where x, y are
> coordinates info from layout.
>
> cheers,
> Wenliang
>
> On Tue, Apr 11, 2017 at 9:43 AM, Gábor Csárdi <address@hidden>
> wrote:
>>
>> Generate the coordinates first, by calling the layout_* function
>> directly, and use that in plot().
>>
>> G.
>>
>> On Tue, Apr 11, 2017 at 2:40 PM, Wenliang Zhao
>> <address@hidden> wrote:
>> > Hi All,
>> >
>> > I am trying to make an interactive plot on shiny using igraph. The
>> > target is
>> > when I click a node of current graph, it can generate a separate
>> > fluidRow to
>> > show the information of current node. I see the solution using
>> > input$click
>> > to retrieve the coordinates info of mouse. Then there is nearPoints
>> > function
>> > to retrieve corresponding rows for current mouse position.
>> >
>> > To do that, I need x,y coordinates of each node stored in a dataframe. I
>> > plot the graph using default layout (radial style) without any
>> > specification
>> > of coordinates before plotting. May I wonder how can I get the
>> > coordinates
>> > info after graph plotted?
>> >
>> > --
>> > cheers,
>> >
>> > Wenliang Zhao
>> >
>> >
>> > _______________________________________________
>> > igraph-help mailing list
>> > address@hidden
>> > https://lists.nongnu.org/mailman/listinfo/igraph-help
>> >
>>
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>
>
>
>
> --
> cheers,
>
> Wenliang Zhao
> Master in Computer Science,
> Courant Institute of Mathematical Sciences,
> New York University
> Cell: 305-781-5829
>
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