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Error Bar Thoughts [message #74769] Wed, 02 February 2011 09:50 Go to previous message
David Fanning is currently offline  David Fanning
Messages: 11724
Registered: August 2001
Senior Member
Folks,

Since I am parallelized in uncertainty as I look at my
growing list of things to do, I've decided to blow
off some steam by doing something fun. I've decided
to add error bars to my cgPlot routine. (Fun *and*
it knocks an item off my list!)

But, here is my dilemma. I don't typically use error
bars. :-(

So here is my question. How would people (presumably
those people who DO use error bars, please!) want
to specify the location of the high and low locations
of the bar? As an offset from the data point?

data = 5
errlow = 0.1
errhigh = 0.2

As a data value itself?

data = 5
errlow = 4.9
errhigh = 5.2

What is the usual thing? Do I need an ERROFFSET flag to
indicate one or the other?

Please reply soon. I have nothing else to do. :-(

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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