MATLAB Central Newsreader - Generation of decision trees in Matlab possible ?

Re: Generation of decision trees in Matlab possible ?

Amir Hossein — Mon, 16 Feb 2009 23:24:01 -0500

could you please tell me how i can show node numbers in my plot using treeplot?

"Steven Lord" <slord@mathworks.com> wrote in message <gfc396$is1$1@fred.mathworks.com>...
>
> "Claus " <il_consigliere@excite.com> wrote in message
> news:gfbigi$969$1@fred.mathworks.com...
> >I am writing some code that will provide probabilities to a decision tree,
> >such as this one:
> > http://www.time-management-guide.com/decision-tree.html
> >
> > I don't know how to generate a pleasing tree in matlab, except to recreate
> > something like the link above using a lot of LINE commands. I am looking
> > for a better idea. Can you help?
>
> Neither of these options are exactly what you want, but Statistics Toolbox
> has a classification tree object:
>
> http://www.mathworks.com/access/helpdesk/help/toolbox/stats/bq4embr-1.html
>
> Alternately, you might try using TREEPLOT or TREELAYOUT and rotating the
> created tree:
>
> http://www.mathworks.com/access/helpdesk/help/techdoc/ref/treeplot.html
>
> http://www.mathworks.com/access/helpdesk/help/techdoc/ref/treelayout.html
>
> --
> Steve Lord
> slord@mathworks.com
>

Generation of decision trees in Matlab possible ?

Claus — Tue, 11 Nov 2008 09:16:02 -0500

I am writing some code that will provide probabilities to a decision tree, such as this one:
http://www.time-management-guide.com/decision-tree.html

I don't know how to generate a pleasing tree in matlab, except to recreate something like the link above using a lot of LINE commands. I am looking for a better idea. Can you help?

Thanks in advance,

Claus

Re: Generation of decision trees in Matlab possible ?

Steven Lord — Tue, 11 Nov 2008 14:02:14 -0500

"Claus " <il_consigliere@excite.com> wrote in message
news:gfbigi$969$1@fred.mathworks.com...
>I am writing some code that will provide probabilities to a decision tree,
>such as this one:
> http://www.time-management-guide.com/decision-tree.html
>
> I don't know how to generate a pleasing tree in matlab, except to recreate
> something like the link above using a lot of LINE commands. I am looking
> for a better idea. Can you help?

Neither of these options are exactly what you want, but Statistics Toolbox
has a classification tree object:

http://www.mathworks.com/access/helpdesk/help/toolbox/stats/bq4embr-1.html

Alternately, you might try using TREEPLOT or TREELAYOUT and rotating the
created tree:

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/treeplot.html

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/treelayout.html

--
Steve Lord
slord@mathworks.com

Re: Generation of decision trees in Matlab possible ?

cannot Ribeiro — Wed, 12 May 2010 18:19:06 -0400

you can not. You have to write a script to do it.

pedro

"Amir Hossein " <a.gharehgozli@gmail.com> wrote in message <gncsih$eu9$1@fred.mathworks.com>...
> could you please tell me how i can show node numbers in my plot using treeplot?
>
>
> "Steven Lord" <slord@mathworks.com> wrote in message <gfc396$is1$1@fred.mathworks.com>...
> >
> > "Claus " <il_consigliere@excite.com> wrote in message
> > news:gfbigi$969$1@fred.mathworks.com...
> > >I am writing some code that will provide probabilities to a decision tree,
> > >such as this one:
> > > http://www.time-management-guide.com/decision-tree.html
> > >
> > > I don't know how to generate a pleasing tree in matlab, except to recreate
> > > something like the link above using a lot of LINE commands. I am looking
> > > for a better idea. Can you help?
> >
> > Neither of these options are exactly what you want, but Statistics Toolbox
> > has a classification tree object:
> >
> > http://www.mathworks.com/access/helpdesk/help/toolbox/stats/bq4embr-1.html
> >
> > Alternately, you might try using TREEPLOT or TREELAYOUT and rotating the
> > created tree:
> >
> > http://www.mathworks.com/access/helpdesk/help/techdoc/ref/treeplot.html
> >
> > http://www.mathworks.com/access/helpdesk/help/techdoc/ref/treelayout.html
> >
> > --
> > Steve Lord
> > slord@mathworks.com
> >

Re: Generation of decision trees in Matlab possible ?

cannot Ribeiro — Wed, 12 May 2010 18:19:06 -0400

Re: Generation of decision trees in Matlab possible ?

cannot Ribeiro — Wed, 12 May 2010 18:20:08 -0400