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http://www.openoffice.org/issues/show_bug.cgi?id=112773


User regina changed the following:

                What    |Old value                 |New value
================================================================================
              Issue type|DEFECT                    |PATCH
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------- Additional comments from [email protected] Sat Nov 20 18:47:53 
+0000 2010 -------
I have changed the equation in a way that for all normal cases it has the form
"f(x)=Intercept exp(logSlope x)".

If Intercept is near 1 but Slope is not near 1, I use "f(x)=exp(logSlope x)"
instead of "f(x)= 1 exp(logSlope x)". If both Intercept and Slope are near 1, I
use the form "f(x)=exp(logIntercept + logSlope x)".

If Intercept is near 0, I use "f(x)=exp(logIntercept + logSlope x)" otherwise
the output would be "f(x)=0 exp(logSlope x)" which is not informative for the 
user.

If all y-Values are not positive the equation has the NaN error message inside
the string. But in those cases a trend line is not drawn at all, so the user
should already notice that there is an error. 

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