*From*: Pascal de Bruijn <pmjdebruijn@xxxxxxxxx>*To*: argyllcms@xxxxxxxxxxxxx*Date*: Sun, 6 Sep 2009 01:30:45 +0200

On Sat, Sep 5, 2009 at 11:40 PM, Graeme Gill<graeme@xxxxxxxxxxxxx> wrote: > Pascal de Bruijn wrote: > >> 0%colprof: Error - rev: bwd vertex 0 is not prime or secondary > > Hmm. I'm not sure if this is a bug or not. It's not > really valid to try and invert a monochrome response as if it > was color. If the response has some volume you might succeed, but > if it has zero volume in some areas you may well get strange > numerical errors, much like you discovered. > > You can at least get a forward profile if you run with the -B > flag (this is probably luck though.) Oh, right... I only need the forward conversion... It actually makes sense the reserve won't work... Regards, Pascal de Bruijn

**Follow-Ups**:

**References**:**[argyllcms] colprof: Error - rev: bwd vertex 0 is not prime or secondary***From:*Pascal de Bruijn

**[argyllcms] Re: colprof: Error - rev: bwd vertex 0 is not prime or secondary***From:*Graeme Gill

- » [argyllcms] colprof: Error - rev: bwd vertex 0 is not prime or secondary - Rick Richardson
- » [argyllcms] Re: colprof: Error - rev: bwd vertex 0 is not prime or secondary - Graeme Gill
- » [argyllcms] Re: colprof: Error - rev: bwd vertex 0 is not prime or secondary - Rick Richardson
- » [argyllcms] colprof: Error - rev: bwd vertex 0 is not prime or secondary - Pascal de Bruijn
- » [argyllcms] Re: colprof: Error - rev: bwd vertex 0 is not prime or secondary - Graeme Gill
- » [argyllcms] Re: colprof: Error - rev: bwd vertex 0 is not prime or secondary - Pascal de Bruijn
- » [argyllcms] Re: colprof: Error - rev: bwd vertex 0 is not prime or secondary - Graeme Gill