Plot statistically significant values!

for i=1:361,
  for j=1:361,
    if ~isnan(anom_wint_r(i,j,:))
      stats = regstats(squeeze(anom_wint_r(i,j,:)),years','linear',{'beta' 'rsquare' 'fstat'});
      idanom_trend_per_winter(i,j) = stats.beta(2);
      stats_pvalues = stats.fstat;
      tpval(i,j) = stats_pvalues.pval;
    else
      idanom_trend_per_winter(i,j) = NaN;
      tpval(i,j) = NaN;
    end
  end
end

I just want to plot the areas where the trends are statistically significant,i.e.plot idanom_trend_per_winter where tpval<=0.5*

[KSSV]

What plot you expecting? A surface plot or line?

[Sophia]

I am expecting a contour plot.. with contourf (filled contours)