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Filling Plots to the X-Axis for a Range of X Values

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  Filling Plots to the X-Axis for a Range of X Values Gregory Lypny <gregory.lypny@videotron.ca> - 2011-03-30 09:18 +0000
    Re: Filling Plots to the X-Axis for a Range of X Values Chris Degnen <degnen@cwgsy.net> - 2011-03-31 08:59 +0000
    Re: Filling Plots to the X-Axis for a Range of X Values Peter Breitfeld <phbrf@t-online.de> - 2011-03-31 08:57 +0000
    Re: Filling Plots to the X-Axis for a Range of X Values Gregory Lypny <gregory.lypny@videotron.ca> - 2011-03-31 09:00 +0000

#1297 — Filling Plots to the X-Axis for a Range of X Values

Hello everyone,

I'd like to fill a plot down to the x-axis but restrict the fill to lie between two x values, and am not sure how to do it.  For example, if I plot a parabola f[x] = x^2, with x in the range =E2=88=9210 to 10, I'd like to be able to fill to the x-axis between x = 2 and x = 7, essentially creating a filled column.  Is there any way to do that?

Regards,

Gregory

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#1307

On Mar 30, 10:18 am, Gregory Lypny <gregory.ly...@videotron.ca> wrote:
> Hello everyone,
>
> I'd like to fill a plot down to the x-axis but restrict the fill to lie between two x values, and am not sure how to do it.  For example, if I plot a parabola f[x] = x^2, with x in the range =E2=88=9210 to 10, I'd like to be able to fill to the x-axis between x = 2 and x = 7, essentially creating a filled column.  Is there any way to do that?
>
> Regards,
>
> Gregory

Plot[{x^2, If[2 <= x <= 7, 0]}, {x, 0, 10},
 PlotStyle -> {Automatic, None}, Filling -> {1 -> {2}}]

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#1310

Gregory Lypny wrote:

> Hello everyone,
>
> I'd like to fill a plot down to the x-axis but restrict the fill to lie between two x values, and am not sure how to do it.  For example, if I plot a parabola f[x] = x^2, with x in the range =E2=88=9210 to 10, I'd like to be able to fill to the x-axis between x = 2 and x = 7, essentially creating a filled column.  Is there any way to do that?
>
> Regards,
>
> Gregory
>
>

I think you have to make two plots and combine them with Show:

pl1 = Plot[x^2, {x, -5, 10}];
pl2 = Plot[x^2, {x, 2, 7}, Filling -> Axis];
Show[pl1, pl2]

Beware: The order of the plots in Show is critical, if you swap it, Show
will disply pl2 only, because it uses the options of the first plot given.

-- 
_________________________________________________________________
Peter Breitfeld, Bad Saulgau, Germany -- http://www.pBreitfeld.de

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#1320

Ahhh, two plots!  Clever.  Thank you, Chris.

Gregory


On Wed, Mar 30, 2011, at 8:04 AM, Chris Degnen wrote:

> On Mar 30, 10:18 am, Gregory Lypny <gregory.ly...@videotron.ca> wrote:
>> Hello everyone,
>> 
>> I'd like to fill a plot down to the x-axis but restrict the fill to lie between two x values, and am not sure how to do it.  For example, if I plot a parabola f[x] = x^2, with x in the range =E2=88=9210 to 10, I'd like to be able to fill to the x-axis between x = 2 and x = 7, essentially creating a filled column.  Is there any way to do that?
>> 
>> Regards,
>> 
>> Gregory
> 
> Plot[{x^2, If[2 <= x <= 7, 0]}, {x, 0, 10},
> PlotStyle -> {Automatic, None}, Filling -> {1 -> {2}}]

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