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Why does the following output from a Sow/Reap not plot?

{out, pts} = Reap[
...
EvaluationMonitor :> Sow[{p}]]`

{{{-50}, {2}, {0}, {-50}, {2}, {0}, {2}, 
{-50}, {0}, {2}, {0}, {2}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {2}, \
{2}, {0}, {0}, {2}, {4}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, \
{0}, {0}, {0}, {4}, {0}, {2}, {0}, {0}, {0}, {2}, {0}, {0}, {0}, {0}, \
{2}, {0}, {0}, {0}, {0}, {0}, {0}, {2}, {0}, {0}, {0}, {0}, {0}, {0}, \
{0}, {0}, {0}, {0}, {-50}, {0}, {0}, {0}, {0}, {2}, {0}, {0}, {0}, \
{0}, {0}, {0}, {0}, {2}, {2}, {2}, {2}, {2}, {2}}}

ListPlot[{p}]

enter image description here

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  • $\begingroup$ Why all the curly braces? Just Sow[p] and then ListPlot[pts]. $\endgroup$
    – Roman
    Commented Jun 3, 2019 at 17:02

1 Answer 1

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Try 

ListPlot[p // Flatten]

enter image description here

to plot the values over indices

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  • $\begingroup$ That works, but why doesn't it show the -50? $\endgroup$
    – spaced
    Commented Jun 3, 2019 at 17:25
  • $\begingroup$ Just add , PlotRange -> All $\endgroup$
    – Ulrich Neumann
    Commented Jun 3, 2019 at 17:28

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