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From: Bob Hanlon on 17 Jun 2010 02:03

On my system, these all work fine without any error messages.

$Version

7.0 for Mac OS X x86 (64-bit) (February 19, 2009)

fff = Compile[{x}, x^2];

DiscretePlot[fff[x], {x, 1, 10, 0.1},
Joined -> True]

DiscretePlot[{fff[x]}, {x, 1, 10, 0.1},
Joined -> True]

ListLinePlot[
{Table[fff[x], {x, 1, 10, 0.1}]},
Joined -> True, Filling -> Bottom]

ListLinePlot[
fff /@ Range[1, 10, 0.1],
Joined -> True, Filling -> Bottom]

However, this works but gives an error message

ListLinePlot[
fff[Range[1, 10, 0.1]],
Joined -> True, Filling -> Bottom]


Bob Hanlon

---- Andrzej Kozlowski <akoz(a)mimuw.edu.pl> wrote:

=============
I am somewhat puzzled by the following behaviour of DiscretePlot

fff = Compile[{x}, x^2];

This works fine:

DiscretePlot[fff[x], {x, 1, 10, 0.1}, Joined -> True]

This also works, but produces an error message:

DiscretePlot[{fff[x]},{x,1,10,0.1},Joined->True]
CompiledFunction::cfsa: Argument x at position 1 should be a machine-size real number. >>

This becomes a (slight) problem when plotting several functions. Using ListLinePlot avoids it:

ListLinePlot[{Table[fff[x], {x, 1, 10, 0.1}]}, Joined -> True,
Filling -> Bottom]

Andrzej Kozlowski=



From: Sjoerd C. de Vries on 20 Jun 2010 03:44
Development version? Is that an Mathematica 8 beta or so? So, we
shouldn't expect it anytime soon?

Cheers -- Sjoerd

On Jun 16, 11:39 am, Andrzej Kozlowski <a...(a)mimuw.edu.pl> wrote:
> On 15 Jun 2010, at 16:52, Ingolf Dahl wrote:
>
> > But then I tested with all the suggested commands in Mathematica 7.0.1.0
> > (Windows 7, 64 bit), and I did not obtain any error messages at all.
>
> Thanks. In fact I was using the development version (and forgot about it) and can now report this as a bug.
>
> Andrzej


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