Thank you for your answer Alex! It's all ok about the question on how resolve some peaks on the graph, expect for the "restore_with_some_flag", but no problem, I'll try to dump, edit and then restore! :)
For my first question (the most important) I haven't understood very well. Let me see if I've understood well the docs U've written about the unknown values :P If I've to sum two (or more) values into one variable, if ONLY one of these is unknown, also the result of the sum is unknown too, also I've to check the unknown values and convert into zero to make the sum right. Ok, If the above is right I must do this to see any graph. Other think I haven't understood is WHY the MAX and AVERAGE values are right and the MIN and LAST not? Example, if I've 3 intervals SUM1 = 3 + 5 = 8, SUM2 = 2 + 3 = 5, SUM3 = 1 + 1 = 2 I should have MAX = 8, MIN = 2, AVERAGE = 5, LAST = 2; but I receive MAX = 8, MIN = 0, AVERAGE = 5 and LAST = 0. I think it's strange, the values should be calculated on the different sums... And it happens ONLY If I convert unknown values into zero (to obtain a graph, otherwise no graph is shown if there are NaN values) Ok, maybe I'm wrong, any help? :) Thank's a lot to everyone! Simon -----Messaggio originale----- Da: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Per conto di Alex van den Bogaerdt Inviato: martedì 3 febbraio 2004 18.02 A: [email protected] Oggetto: [rrd-users] Re: RRD - Working with unknow data and changing unknown into zero On Tue, Feb 03, 2004 at 05:23:54PM +0100, Simone Felici - Alpikom Spa wrote: > Reading the CDEF tutoria I've found the syntax to convert unknown > values into zero but after this operation the LAST and MIN values are > ZERO too... > Questions: > > 1- Any Idea why? Sure. You _have_ actually changed the values so the minimum, if not below zero, the minimum is actually becoming zero. How to circumvent is your next question: Answer is to make a copy, use one copy to determine min,avg,max etc. and the other copy to alter unknown in zero. > 2- Other thing. In some cases I receive some peaks on graphs. Can I > edit the rrd file manually and delete the wrong values? (Or any other > solution...) 1: dump, edit, restore. 2: dump, restore_with_some_flag HTH, Alex -- -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
