Hi, In analysis of financial data it is crucial to have that concept. (for instance what to have in a time-series for the closing price on a holiday...). However, I do not see the need to make ROOT do something special here. In the case of a time series , I fill the array to setup up the hist or graph while skipping the "missing values". We have of course a special number for the "missing values" so they are easy to recognize. Graphing the data is only half the story. All the operations on time series need to know what to do if you have a missing data point my 0.02 > > Hello Root Developers, > > I don't know if "missing value" support in displaying histogram and graph > plots has already been added to the wish list ? Does anybody else miss this > feature ? > > It's one of the features that I really like in IDL and am currently sorely > missing in my ROOT analysis. It consists basically in the the ability to > designate certain values as "missing" or "bad" data and have the > contour/plot routines ignore this data when building up the > image/contour/plot. > > Continue the good work. > > Malcolm > > <>------------------------------------------------<> > Malcolm W. J. Davidson > CESBIO - UMR 5639 CNES-CNRS-UPS > 18 Avenue Edouard Belin > BP 2801 > F-31401 Toulouse Cedex 4 France > e-mail : davidson@cesbio.cnes.fr > phone (33)(0)5.61.55.85.84 > fax (33)(0)5.61.55.85.00 > <>------------------------------------------------<> > Eddy A.J.M. Offermann Renaissance Technologies Corp. Route 25A, East Setauket NY 11733 e-mail: eddy@rentec.com http://www.rentec.com
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