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Plotting an out of phase wave result: plot is failing when passed zeroes

POSTED BY: Mark Wigzell
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Updating Name
Updating Name
Posted 1 year ago

Thanks guys, but your suggestions usually resulted in a 'U' or 'V' shape with the bottom at the (0,0) point. I found the following to at least yield a flat line as I had been originally trying to get:

ListLinePlot[Table[Sin[x] + Sin[x+Pi],{x,0,2Pi}],PlotStyle ->{Red}]
POSTED BY: Updating Name
Hans Milton
Hans Milton
Posted 1 year ago

Chop can be used. It replaces numbers very close to zero by an exact 0

Plot[Sin[x] + Sin[x + Pi] // Chop, {x, 0, 2 Pi}]
POSTED BY: Hans Milton

The plot amplifies a very tiny numerical noise. Suppress amplification:

Plot[Sin[x] + Sin[x + Pi], {x, 0, 2 Pi}, PlotRange -> 1]
POSTED BY: Gianluca Gorni
Bill Nelson
Bill Nelson
Posted 1 year ago

Try

Plot[Sin[x] + Sin[x + Pi], {x, 0,2 Pi},WorkingPrecision->64]

or

FullSimplify[Sin[x] + Sin[x + Pi],0<=x<=2Pi]

or

TrigExpand[Sin[x]+Sin[x+Pi]]
POSTED BY: Bill Nelson
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