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raw | patch | inline | side by side (parent: 85ea48d)
author | oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa> | |
Sat, 15 Jan 2011 13:01:13 +0000 (13:01 +0000) | ||
committer | oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa> | |
Sat, 15 Jan 2011 13:01:13 +0000 (13:01 +0000) |
program/doc/rrdtutorial.pod | patch | blob | history |
index f5ab0f395cda14fd490befe06ebd8ce0e41bfde3..e29cd503c081fe1225831be49a3532a8d50e5ba7 100644 (file)
920808600: 6.6666666667e-03
920808900: 3.3333333333e-03
920809200: nan
-
-If it doesn't, something may be wrong. Perhaps your OS will print
-"NaN" in a different form. "NaN" stands for "Not A Number". If your OS
-writes "U" or "UNKN" or something similar that's okay. If something
-else is wrong, it will probably be due to an error you made (assuming
-that my tutorial is correct of course :-). In that case: delete the
-database and try again.
+ 920809500: nan
+
+Note that you might get more rows than you expect. The reason for this is
+that you ask for a time range that ends on 920809200. The number that is
+written behind 920809200: in the list above covers the time range from
+920808900 to 920809200, EXCLUDING 920809200. Hence to be on the sure side,
+you receive the entry from 920809200 to 920809500 as well since it INCLUDES
+920809200. You may also see "NaN" instead of "nan" this is OS dependent.
+"NaN" stands for "Not A Number". If your OS writes "U" or "UNKN" or
+something similar that's okay. If something else is wrong, it will probably
+be due to an error you made (assuming that my tutorial is correct of course
+:-). In that case: delete the database and try again.
The meaning of the above output will become clear below.