>> Or, to put it another way, I picked a bad example. ;-)
> 
> Or, a lot of what you might want to do in a spreadsheet is pre-defined :-)

Or, I use a spreadsheet in a way that's very different to how normal 
people use them.

(E.g., Excel doesn't provide a "convolution" function. And it would be 
far too hard to implement one in VBA. Not because the algorithm is hard, 
but because I'd have to figure out how to access the cells of the 
spreadsheet...)

I tend to use Excel as a function plotter - and it's annoying that 
things like an FFT are so hard to do.

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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