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How to use PFP to linearize QTR

How to use PFP to linearize QTR

2007-06-18 by Daniel Jackson

OK, so having struggled for many hours to make QTR curves, I've
made my first definite discovery that might help other people.

I noticed an odd instability: that sometimes linearization had an
effect, and sometimes it didn't. I attributed this to caching effects
in QTR. Now I've found the problem.

If you select the "QTR format" option in PrintFix PRO, it generates
a line for your QTR curve file. But the variable name is wrong!

Here's what PFP generated for my last curve:

LINEARIZATION="0.03 0.18 0.34 0.50 0.64 0.77 0.91 1.02 1.09 1.15 1.20 1.25 1.31 1.35 
1.41 1.44 1.47 1.50 1.52 1.56 1.59"

QTR will just silently ignore this. The line should read

LINEARIZE="0.03 0.18 0.34 0.50 0.64 0.77 0.91 1.02 1.09 1.15 1.20 1.25 1.31 1.35 1.41 
1.44 1.47 1.50 1.52 1.56 1.59"

So three suggestions:
1. For users: make sure you copy the array from the PFP output, not the whole line.
2. For ColorVision: here's a bug for you to fix.
3. For Roy: how about generating an error message when a variable is assigned that QTR
doesn't recognize?

--Daniel

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.