[rrd-users] Re: Graph like functionality when fetching data

[Tobias Oetiker]

Today Philip Molter wrote:

 |
 | On Mon, Feb 19, 2001 at 06:31:28PM +0100, Alex van den Bogaerdt wrote:
 | : Philip Molter wrote:
 | : >
 | : >
 | : > The RRD manpage for rrdgraph says this:
 | : >
 | : >   Apart from generating graphs, it can also extract numerical reports.
 | : >
 | : > Is this referring to the GPRINT instructions or, is there an ability
 | :
 | : Whatever you do with the GPRINT function, is PRINTed in the Graph.
 | : If you leave out the G, you end up with PRINT.
 |
 | Well, sort of not really.  The thing is, I could definitely do half
 | of what I needed to do with a PRINT statement, but if I want to do
 | anything with that return value, I need to trap STDOUT (I'm working
 | in Perl, btw), and then read the value in, etc.  The other major
 | caveat is that I don't really want to generate the graph, I just
 | want the data results.

if you do not spec any graphing commands, no graph will be
generated ... and the return from PRINT arguments does not go to
stdout if you call graph from perl ... check the examples ...

cheers
tobi

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