Thanks Michael and Stefan
I see jmatharray page (https://github.com/yannrichet/jmatharray). It seems
to have only some basic tools, possibly histogram from
org.math.array.StatisticSample could be useful, I will check.
As Stefan mentioned org.openjump.core.attributeoperations.Classifier1D
provides only count methods.
I will check on internet and on Sextante (I found that
es.unex.sextante.math.simpleStats.SimpleStats for instance has a nice set
of statistics inidices for arrays).
Maybe I will add a "Statistics" class that work for arrays - both
descriptive (mean, standard dev., etc) statistics and frequancies on arrays.
I am planning to add a histogram plugin for Raster which provides also some
frequency tools as I feel Sextante>Basic Statistics>Histogram tool is quite
simple for some (raster) data analysis.
Peppe
2018-05-22 0:38 GMT+02:00 Stefan Steiniger <sst...@geo.uzh.ch>:
> Hi Peppe,
>
> not that I know of... I was thinking there could be something related to
> colors theming - but I don't think so with respect to the type you want i
> even doubt that jmath has. I used only "counts" (like for histograms);
> which is a bit different - or? But you could also check if Sextante has
> something?
>
> For OJ source code you could just run a text search using "frequency"
>
> cheers,
>
> Stefan
>
> On 5/21/18 17:44, Michaël Michaud wrote:
>
> Hi Peppe,
>
> I think that OpenJUMP plugins including statistical functions make use of
> jmatharray-20070905. It does not include so many functions, but it is very
> lightweight.
> Maybe Stefan knows a bit more about it.
> Maybe there are some other places where statistical functions have been
> coded. Do cou need it for feature attribute analysis or for image analysis ?
>
> Michaël
>
> Le 21/05/2018 à 20:03, Giuseppe Aruta a écrit :
>
> Hi all,
> do we have calsses/methods in OJ core to calculate frequencies (absolute,
> relative and cumulative) of an array of numbers? I can implement these
> methods but I would prefer to use something already in the OJ source.
> thanks
> Peppe
>
>
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