Re: [igraph] interactive plot on shiny

[Wenliang Zhao]

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
>
>

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--

cheers,

Wenliang Zhao

Master in Computer Science,

Courant Institute of Mathematical Sciences,

New York University

Cell: 305-781-5829