Ok here’s the Version 0.3 (attached ZIP):
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RePlot v0.3  Renoise automation curve function plotter
© 2010 Matthias Ehrmann (Airmann)
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This Java application is based on the OpenSource FuncPlotter:
http://funcplotter.sourceforge.net/ © 20052008 Andy MorganRichards
With RePlot you can define functions and value ranges.
The values are copied as XML document into the clipboard.
From the clipboard you can paste the values into a Renoise automation envelope
Just Start Renoise, execute the jar file, open a function and
paste clipboard into an automation envelope.
With this function you can create alternative fades, crossfades,
or nice oscillation curves. Whatever. The sky is the limit.
There’s a demo song included which contains different
crossfade envelopes that were created with RePlot. It demonstrates
the “equal gain crossfade” vs. “equal power crossfade”.
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HINTS:
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All functions have a comment with usefull information.
Just open the comment view in RePlot (strgm)

Inbuilt math functions are:
ABS, ACOS, ACOSH, ACOT, ACSC, ASEC, ASIN, ASINH, ATAN, ATANH,
CEIL, COS, COSH, COT, CSC, EXP, FLOOR, LG, LN, ROUND, SEC, SIN,
SINH, SQRT, TAN, TANH, PLUS, MINUS, DB

the DB function is the Renoise dBFunction

for more information have a look at the FuncPlotter documentation

Not supported, right now: bipolar envelopes, quantum envelopes,
other envelopes (LFO, instrument)
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LICENSE
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This Software is licensed under the GPL V3