Re: Varying plot symbols according to additional criteria

• To: mathgroup at smc.vnet.net
• Subject: [mg113884] Re: Varying plot symbols according to additional criteria
• From: Leo Ditolaghi <leoditolaghi at gmail.com>
• Date: Wed, 17 Nov 2010 05:28:17 -0500 (EST)

```Thanks, Bob. Is there any way to do this in the context of the
existing Plot functions too?

Thanks again :)

Leo

On Tue, Nov 16, 2010 at 8:45 AM, Bob Hanlon <hanlonr at cox.net> wrote:

>
> data = RandomReal[{0, 1}, {15, 4}] // Sort;
>
> For example, let data represent {x, y, marker size, marker hue}
>
> Graphics[{
>  Line[data[[All, {1, 2}]]],
>  {Hue[#[[4]]],
>     Disk[#[[1 ;; 2]],
>      Max[#[[3]]/40, .006]]} & /@
>   data},
>  Frame -> True]
>
>
> Bob Hanlon
>
> ---- Leo Ditolaghi <leoditolaghi at gmail.com> wrote:
>
> =============
> Hi all,
>
> I saw this question posted in another forum. I wish to do the same in
> Mathematica;
> the author says he routinely does it, does anyone know how?
>
> Thanks in advance,
>
> Leo
>
> > Good morning. Suppose I have a table of data with multiple columns. The
> first column has X values, and the second (say) has Y values to be plotted
> against X. The remaining columns have other data associated with X, but I'm
> not going to plot those.
> >
> > Now suppose I want to plot X against Y, but I want the markers to vary in
> shape, color, or some other visible characteristic depending on the values
> of data in columns that I am not plotting. Now granted, I could write a
> series of loops to parse the data array into smaller arrays, and plot each.
> But that's a lot of work, and it would be more compact and readable if I
> could use the other data columns parametrically to set marker
> characteristics.
> >
> > I'm still fairly new to this system, but as a long-time Mathematica user,
> this
> is a fairly common thing to do. Is it straightforward in this system?
> Thanks, my
> searches have come up short.
> >
> > Oh yeah. Ideally, I could create a legend containing each symbol type,
> even though only only y-series is being plotted.
> >
> > Appreciate any help I can get...
>
>
>

```

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