Digital BW, The Print

Steve Kale wrote,
>
> From Roy's post announcing the new version that I mentioned 
> in an earlier post (formatting distorted in post):
> 
> Supports a more general data input file. Anything
> columnar,
> looks for column headings of:
> 
> GRAY
> L, LAB, LAB_L, A, LAB_A, B, LAB_B
> D, DENSITY, V, VISUAL
> 
> 
The X-rite 810 produces two types of data - density readings (called "Vis")
and "RGB" readings for colour information. I understand how to use the
Density readings in the text file for Create-ICC but I'm not sure how to
convert the RGB readings (which are on the same density scale as the Vis
readings) to Lab_A & Lab_B. Is this possible?

Thanks
Howard