Issue 69664 - Poisson error bars
Summary: Poisson error bars
Alias: None
Product: General
Classification: Code
Component: chart (show other issues)
Version: 3.3.0 or older (OOo)
Hardware: All All
: P3 Trivial (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
Depends on:
Reported: 2006-09-19 08:37 UTC by olinart
Modified: 2013-09-25 20:41 UTC (History)
1 user (show)

See Also:
Issue Type: FEATURE
Latest Confirmation in: ---
Developer Difficulty: ---


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Description olinart 2006-09-19 08:37:20 UTC
Hi, Ingrid.
This is a restatement of issue 69423 as requested. It is common in science to
show graphs with number of counts in the ordinate. When these counts reflect
statistical variation around a constant rate, the distribution is Poisson, and
is well approximated by a normal distribution with standard deviation given by
the square root of the ordinate value. 
This should be very straight-forward to code by copying the code used to produce
% error bars.  

While suplying error bars from a range (766) is a long-standing request which
would aloow the user to do this, 766 has been delayed for years presumeably for
technical reasons. Including one of the common error estimates is a useful
simplification of a common case, and should not suffer the 766 delays.
Comment 1 IngridvdM 2006-09-19 10:17:39 UTC
Comment 2 IngridvdM 2006-09-19 10:18:12 UTC
Comment 3 IngridvdM 2008-07-22 14:21:04 UTC
reset to new