[JPP-Devel] @Larry, about ring buffer tool

[Giuseppe A. <giu...@ya...>]

Dear Larry,
Yesterday I gave  a look at your ring buffer tool. I consider it a very good idea which can be used in many situation
I had several ideas about it which probabily can improve the functionality.
a) the buffer value of the first ring (ing A) could be an arbitrary value (lat's say L) or an attribute value
b) the values of outer rings (Rings B, C, D...)could be different according to mathematic formulas. Some samples:
1) Linear (A=L, B=L, C=L....), a sequence of rings which have the same inner radius. 
2) Geometrical (A=L, B=2L, C=3L, D=4L) each radius is bigger than the inner one of L value.
3) Esponential (A=L, B=2L, C=4L, D=8L) each radius is the double then the imnner.
4) By formula. This probabily is more difficult . If I give asn arbitrary formula that calculates the value of each ring according, for instance sample 3) could be squared L. This option would allow user to calculate even decremental inner buffer (L/2 or 2/3*L, etc).
I am not sure about the difficulties to create these options. Consider that these options will make your plugin extremely useful. 
For instance: sample 1 (linear) would be useful to calculate the progression of an river which overbank on a flat valley at the forst stages.
Samples 2 and 3 would have some medical application (diffusion of some plague on a territory) or botanic or ecological usage (progression of air/water pollutions). 
The sample 4 (by formula) probabily is the most required one, in my case (geology) I would use to calculate the progression of a vulcanic surge (from the souce to the valley) to define risk maps.  Or the progression of avalances according to formulas which I calculate by the slope
his would be an interesting area of developing for OJ

Best regards and thanks for your efforts

Peppe



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