Thanks very much for the enlightenment. Very interesting indeed, and
I am glad
to find Nightingale exonerated of her purported crime.
cheers,
Rolf
On 29/01/2008, at 8:25 AM, Greg Snow wrote:
> I had heard the same thing about Florence Nightingale, but it seems
> that this is a confusion of different graphs.
>
> Nightingale developed a graph based on a circle, but all the angles
> were equal and the different values were encoded by using different
> radii of the slices (and she did the right thing by having the
> radius proportional to the square root of the value). She never
> named this plot, but I have seen coxcomb (Nightingale refered to
> the document in which this graph first appeared as the coxcomb) or
> rotogram used as names. At first glance this may be confused for a
> pie chart, hence the credit, but in truth I think Nightingale is
> innocent of the crime of creating the first pie chart.
>
> From: [EMAIL PROTECTED] on behalf of Rolf Turner
> Sent: Mon 1/28/2008 12:10 PM
> To: r-help
> Subject: Re: [R] [OT] vernacular names for circular diagrams
>
>
> On 28/01/2008, at 12:07 AM, Peter Dalgaard wrote:
>
> > Jean lobry wrote:
> >>>
>
> <snip>
>
> >>> about an hour North of Paris. Her father inquired -
> >>> coincidentally during the cheese course - what work I was
> >>> doing in Paris; I replied that I was researching the
> >>> activities of a Scot, William Playfair, during the
> >>> revolutionary period. I told him that Playfair had invented
> >>> several statistical graphs, including the pie chart
>
> <snip>
>
>
> I have been for many years under the impression that the pie chart
> was invented by Florence Nightingale. Am I misinformed?
>
> cheers,
>
> Rolf Turner
>
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