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Re: Do Plot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg129156] Re: Do Plot
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Tue, 18 Dec 2012 02:41:02 -0500 (EST)
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On Dec 17, 2012, at 2:54 AM, Nasser M. Abbasi <nma at 12000.org> wrote:

> On 12/16/2012 4:05 AM, dwarnold45 at suddenlink.net wrote:
>> Should this command work in Mathematica 9?
>>
>> Do[Plot[x^2 + c, {x, -2, 2}], {c, -1, 1, 0.2}]
>>
>> Not working on my Macbook Pro, Snow Leopard 10.6.8.
>>
>> David.
>>
>
> Need a Print
>
> Do[Print@Plot[x^2 + c, {x, -2, 2}], {c, -1, 1, 0.2}]
>
> I *think* this is the case since version 6. Before that, Print[]
> was not needed.



And the reason that Print was not needed before version 6 was _not_ 
because the behavior of Do changed. The function Do never returned a 
result. Rather, before version 6, Plot had a "side effect" of producing 
a displayed graphic.

---
Murray Eisenberg                                    murray at math.umass.edu
Mathematics & Statistics Dept.      
Lederle Graduate Research Tower            phone 413 549-1020 (H)
University of Massachusetts                               413 545-2838 (W)
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Amherst, MA 01003-9305








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