[Maxima] plotting data that is in an array

Mario Rodriguez biomates
Thu Feb 24 22:00:40 WET 2011


El jue, 24-02-2011 a las 16:15 -0500, Doug Stewart escribi?:
> 
> 
> On Thu, Feb 24, 2011 at 3:59 PM, Jaime Villate <villate at fe.up.pt>
> wrote:
>         On Wed, 2011-02-23 at 10:56 -0500, Doug Stewart wrote:
>         > I tried:  plot2d(difar[x],[x,1,200]); plot2d: expression
>         evaluates to
>         > non-numeric value somewhere in plotting range.
>         
>         
>         The form plot2d(difar[x], [x,1,200]);
>         would only work if difar[x] existed for any value of x between
>         1 and
>         200, for instance difar[2.345409689].
>         To make a plot with points, look at the examples of plot2d
>         with the
>         "discrete" option in the manual (? plot2d).
>         Regards,
>         Jaime
>         
> I guess i'm not smart enough to use maxima, because I still don't get
> it.
> 
> 
> I have an array made with
> array(difar,270);
> I have put numbers in the array.
> I want to plot the array. Could someone give me an exact line that
> will plot this array?



(%i2) array(a,5) $
(%i3) for i:0 thru 5 do a[i]: bfloat(random(1.0))$
(%i4) plot2d( [discrete, listarray (a)] ) $

or:

(%i5) load(draw)$
(%i6) draw2d(
        points_joined=true,
        points(listarray(a))) $

--
Mario





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