On Wed, Jun 07, 2006 at 05:26:08PM +0200, Georges Toth wrote:
> Which "looks" fine if all the soruces contain data.
> But if some sources don't contain data, I just get NAN.
you need to add an IF directive there which returns data or zero if undefined:
| CDEF:mycdef=mydef,UN,0,mydef,IF
which yields in your case
| CDEF:mycdef=mydef00,UN,0,mydef00,IF,
| mydef01,UN,0,mydef01,IF,
| [...]
| mydef99,UN,0,mydef99,IF,
| +,
| +,
| [...]
| +
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