Re: Applying data from a database link to a GraphPlot
- To: mathgroup at smc.vnet.net
- Subject: [mg131143] Re: Applying data from a database link to a GraphPlot
- From: Ulrich Arndt <ulrich.arndt at data2knowledge.de>
- Date: Fri, 14 Jun 2013 05:00:15 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- Delivered-to: l-mathgroup@wolfram.com
- Delivered-to: mathgroup-outx@smc.vnet.net
- Delivered-to: mathgroup-newsendx@smc.vnet.net
- References: <20130613063835.7C7166A65@smc.vnet.net>
You have a list of lists and you want a list of rules.
Check Apply.
dat = {{"PENELOPE", "GUINESS"}, {"NICK", "WAHLBERG"}, {"ED",
"CHASE"}, {"JENNIFER", "DAVIS"}, {"JOHNNY",
"LOLLOBRIGIDA"}, {"BETTE", "NICHOLSON"}, {"GRACE",
"MOSTEL"}, {"MATTHEW", "JOHANSSON"}, {"JOE",
"SWANK"}, {"CHRISTIAN", "GABLE"}}
Apply[Rule, dat, 2]
Ulrich
Am 13.06.2013 um 08:38 schrieb Paul Pikowsky:
> This is my first project and I am trying to import data from a MySQL query into a GraphPlot expression.
>
> A return from MySQL (Sakila is the example here)
>
> SQLExecute[conn, "SELECT first_name, last_name FROM actor LIMIT 10"]
>
> {{"PENELOPE", "GUINESS"}, {"NICK", "WAHLBERG"}, {"ED",
> "CHASE"}, {"JENNIFER", "DAVIS"}, {"JOHNNY",
> "LOLLOBRIGIDA"}, {"BETTE", "NICHOLSON"}, {"GRACE",
> "MOSTEL"}, {"MATTHEW", "JOHANSSON"}, {"JOE", "SWANK"}, {"CHRISTIAN",
> "GABLE"}}
>
> (This is not the intended data, just a sample of the output.)
>
> But GraphPlot uses inputs of the form,
>
> GraphPlot[{"d" -> "c", "e" -> "b", "e" -> "c", "e" -> "d", "f" -> "a",
> "f" -> "b", "f" -> "d", "f" -> "e", "g" -> "a", "g" -> "b",
> "g" -> "c", "g" -> "e"}, VertexLabeling -> True]
>
> Is there some way in place of converting the output of a data query to the input of a graphplot? I see that an adjacency matrix is an optional input, but I'd also want to use labels generated from the database.
>
- References:
- Applying data from a database link to a GraphPlot
- From: Paul Pikowsky <ppksky@gmail.com>
- Applying data from a database link to a GraphPlot