You probably are adding a known value to an unknown value. The trick would be to skip the unknown ones, although you would be lying. You can do the skip in your rpn.
Say your rpn looks like this: def: var1 def: var2 cdef:total=var1,var2,+ you could change that to: cdef:total=var1,UN,0,var1,IF,var2,UN,0,var2,IF,+ (untested) Which says: total = (if var1 = UN then 0 else var1) + (if var2 = UN then 0 else var2) Serge Maandag. -----Original Message----- From: Shahira Rasmy [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 07, 2002 8:19 AM To: [email protected] Subject: [rrd-users] Fw: Addition Problem Dear All; I have some problems with adding several rrds,,some are collecting data for a long time and the others are recent ones. The results is that the history o the old ones disappear in addition.. Can anyone tell me how can i solve that problem??? Thanks, -- 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 -- 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
