On 04/14/2011 06:39 PM, Alain wrote:

>> I've been cleaning up the isosurface tutorial in the docs, mostly image
>> formats and some grammar and wording as I come across it ... anyway In
>> this section:
>>
http://wiki.povray.org/content/Documentation:Tutorial_Section_3.2#Specifying_functions
>>
>> I haven't the vaguest idea what this sentence is getting at: "With the
>> equation of a sphere x^2+y^2+z^2 = Threshold we get:" ... then code
>> example just below it ... threshold Threshold seems ALL wrong to me. The
>> threshold keyword expects a float value were as the above equation would
>> set Threshold to a vector ... correct? What am I missing here?
>>
>
> Here, "Threshold" is a previously declared user variable. It should be a
> float.
>
> The only thing would be to explicitely state that it must be a float.
>
>
> Alain

thanks ... just as I thought, that sentence is misleading

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