# What's the simplest way to plot an ErrorListPlot with only y error bars?

Sometimes I get really tired of Preparing data for making an ErrorListPlot using Thread and friends. Is there a simpler way to plot an ErrorListPlot with only y error bars?

Nothing is mentioned in the documentation.

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Perhaps I should change this into a self answered Q/A? What's the simplest way to plot an ErrorListPlot?:) –  Ajasja Apr 12 '13 at 13:56
I agree with the Q/A idea. –  Mr.Wizard Apr 12 '13 at 14:12
@Mr.Wizard done –  Ajasja Apr 12 '13 at 14:43

Indeed it seems there is a simpler way:

ErrorListPlot[{{{x1, y1}, ErrorBar[err1]}, {{x2, y2}, ErrorBar[err2]}, ...}]


Just do

ErrorListPlot[{{x1, y1, dy1}, {x2, y2, dy2} ...}, ...}]


Here is an example:

Needs["ErrorBarPlots"]
ErrorListPlot[{{1, 2, 0.5}, {3, 4, 0.1}, {5, 6, 0}},
PlotRange -> All, Frame -> True, Axes -> False]


Why this is not documented is beyond me.

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If you type ??ErrorListPlotyou get the transformation being used: {{ErrorBarPlotsPrivatex_?NumericQ, ErrorBarPlotsPrivatey_?NumericQ, ErrorBarPlotsPrivatee_? NumericQ} :> (ErrorBarPlotsPrivateerror[ N[{ErrorBarPlotsPrivatex, ErrorBarPlotsPrivatey}]] = ErrorBar[{0, 0}, {-ErrorBarPlotsPrivatee, ErrorBarPlotsPrivatee}]; –  belisarius Apr 12 '13 at 17:36