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Re: M9. Error messages when assign ContourPlot graphic to variable

• To: mathgroup at smc.vnet.net
• Subject: [mg128985] Re: M9. Error messages when assign ContourPlot graphic to variable
• From: Bob Hanlon <hanlonr357 at gmail.com>
• Date: Fri, 7 Dec 2012 01:37:13 -0500 (EST)
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• References: <20121206095953.6A0DF6910@smc.vnet.net>

$Version

"9.0 for Mac OS X x86 (64-bit) (November 20, 2012)"

pf[a_, b_] = ParametricNDSolveValue[
    {y''[x] == -a y[x], y[0] == a, y'[0] == b},
    y, {x, 0, 20}, {a, b}][a, b];

ContourPlot[pf[a, b][5] == 0,
 {a, 0, 5}, {b, 0, 5},
 ContourStyle -> {Red, Thick}]

ContourPlot[pf[a, b][5],
 {a, 0, 5}, {b, 0, 5},
 ContourStyle -> {Automatic, Automatic,
   {Red, Thick}, Automatic, Automatic}]

cp = ContourPlot[pf[a, b][5],
   {a, 0, 5}, {b, 0, 5}];

Manipulate[
 Show[
  cp,
  ContourPlot[
   pf[a, b][5] == value,
   {a, 0, 5}, {b, 0, 5},
   ContourStyle -> Red]],
 {{value, 0, "Value"}, Range[-4, 8, 2]}]


Bob Hanlon


On Thu, Dec 6, 2012 at 4:59 AM, Grischika <Grischika at mail.ru> wrote:
> Running this code
> pf = ParametricNDSolveValue[{y''[x] == -a y[x], y[0] == a,
>    y'[0] == b}, y, {x, 0, 20}, {a, b}];
> ContourPlot[{pf[a, b][5] == 0}, {a, 0, 5}, {b, 0, 5}]
>
> then copy and past this image to input cell. Execute the cell. The following message appears:
>
> ParametricFunction::argrx: ParametricFunction called with 0 arguments; 6 arguments are expected. >>
>
> Windows XP 32 bit
> Mathematica 9.0.0
>
> Grigory
>

• References:
  • M9. Error messages when assign ContourPlot graphic to variable
    • From: Grischika <Grischika@mail.ru>