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If I change $MinPrecision before running ListPlot[{{1, 2}}], there will be a warning in Mathematica 10. But there is no warning in Mathematica 9. Is there a way to avoid this warning?

$MinPrecision = 30;
ListPlot[{{1, 2}}]

N::precsm: "Requested precision 16 is smaller than \$MinPrecision. Using \$MinPrecision instead."

Added: What I wanted to ask is not how to suppress a warning message in general. In fact, I think it is unreasonable for Mathematica 10 to have this warning, because (1) Mathematica 9 does not have it; (2) it is not useful. Off[N::"precsm"] does solve the problem, but some useful warnings may also be suppressed as well.

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    $\begingroup$ For a single instance you can use Quiet. To suppress the message globally you can use Off[N::"precsm"]. If that solves your problem this should probably be closed. If it does not please edit your question to explain why. $\endgroup$
    – Mr.Wizard
    Sep 3, 2014 at 10:13
  • $\begingroup$ This seems to be a change in ListPlot, perhaps to accurately convert exact data to approximate real data. I would suggest that you report it to Wolfram Research. Probably the internal code should read N[data, Max[16, $MinPrecision]] instead of something like N[data, 16]. $\endgroup$
    – Michael E2
    Sep 4, 2014 at 16:56

1 Answer 1

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It is best to do this sort of thing within a Block, so $MinPrecision is not changed globally, but only inside the scope of Block.

I recommend

Block[{$MinPrecision = 30}, Off[N::precsm]; ListPlot[{{1, 2}}]]

but

Block[{$MinPrecision = 30}, Quiet @ ListPlot[{{1, 2}}]]

will work as well.

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