[vox-tech] [OT] Math question: help me make a rainbow

[Jeff Newmiller]

Bill Kendrick wrote:
> On Wed, Apr 01, 2009 at 11:29:13PM -0700, Jeff Newmiller wrote:
>> Is this [1] what you are thinking of?
>>
>> [1] http://home.comcast.net/~jdnewmil/puzzle/rainbow_draw.gnumeric
> 
> Close!  When y2=y1, I get a flat line, though.  I should get an arc
> from a circle with a diameter of abs(x2-x1).

I changed it a little. Look again.

> Also, I'm a gnumeric gn00b -- is there a way to make the chart always
> have the same aspect ratio?  (that is, I want the steps in the X axis
> to be the same width in the Y axis, so that things don't squish and
> stretch)

I don't think so.

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