I need to create a spiral exponential arc with a fix center, but the radius of the arc will increase exponentially along the curve at every
SW has the ability to do a spiral, but if you have special requirements like the exponential radius growth, you might have to write a little equation for that. Might be easiest to write a polar equation and convert to cartesian coordinates. I have a macro that you can type an equation into, and it will draw a spline for you.
Good luck,
matt
snipped-for-privacy@friedrich.com (Judora) wrote in news: snipped-for-privacy@posting.google.com:
can you write an equation for the curve?
"Judora"
you could use Excel to generate a file of points then "Curve through XYZ points" to make a curve.
For more complex things, if you want to create calculated surfaces or if you prefer VB programming to Excel formulas, our free "MathSurf " macro
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