# Resolution Problem of Contour Plot (Local)

I have a smooth function which near one point has a very rapid change, a peak with a very very narrow width!

That if I plot the blank region with a function like r= -18.5+20.6 Tanh(u) at r->2

I want to actually, increase the resolution of the first ContourPlot maybe just locally (as r->2) so I can have the whole graph in one plot and show the behavior of my function in one clean plot. So far I tried increasing the PlotPoints, using MaxRecursion and everything that is explained here: Resolution problem of ContourPlot Question, and yet no luck! Any idea please?

• PlotPoints->00? – David G. Stork Apr 20 '17 at 17:11
• PlotPontis->00? I never heard of, you mean instead of 100 I should go with 00? I just tried it and it says "Value of option PlotPoints -> 0 is not an integer >= 2" – ShS Apr 20 '17 at 17:16
• Try adding Exclusions->None – Carl Woll Apr 20 '17 at 17:18
• @CarlWoll you are a life saver, thanks! it worked perfectly – ShS Apr 20 '17 at 17:22
• Typo above: PlotPoints->100`. – David G. Stork Apr 20 '17 at 17:54