[rrd-users] Re: How to put commas in gprint numbers

Alex van den Bogaerdt alex at ergens.op.het.net
Mon Dec 5 22:31:27 MET 2005

On Mon, Dec 05, 2005 at 11:55:42AM -0900, Colht, Charles wrote:
> I figured out a crude method to get thousands seperators in my graph
> numbers:
> Fetch the last values directly from the rrd
> Add the commas
> Use COMMENT instead of GPRINT
> I came up with this bit of perl:
> sub commafy {
>     my $text = reverse $_[0];
>     $text =~ s/(\d\d\d)(?=\d)(?!\d*\.)/$1,/g;
>     return scalar reverse $text;
> }
> I wrote this along time ago but couldn't figure out how to make rrd use
> it. There is a Number::Format module that is much more flexible but this
> gets the job done for me. 
> Is there a way to get the values of DEFs and CDEFs without doing an
> external fetch or maybe have rrd call my sub within a CDEF?

Use PRINT in stead of GPRINT.  Then do as you do know.

On the comma's in (G)PRINT: is there a standard way of printing this?
If so, use that in stead of "%6.2lf".  I don't think there is a standard
way but if it works for you, why not.  Google for "manual printf"

Alex van den Bogaerdt

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