This doesn't  sound like an R question. Can you explain the R code you're
using?

Sarah
On Feb 18, 2012 12:36 AM, "Mahnaz Rabbaniha" <rab.mahnaz@gmail.com> wrote:

> thanks
>
> i take the answer about stress.
>
> my goal is find ,which one independent variable is affect to variation of
> dependent ( as same as the result of pca with supplementary variable) but
> the data was non-metric. therefore i chose these steps in PAST:
>
> - SELECT DATA ( INCLUDED : DEPTH, SALINITY,TEMPERATURE AND FISH LARVA
> ABUNDANCE)
> - CHOSE NONPARAMETRIC
> - CHOSE CORRELATION ( CONFIDENCE 95%)
>
> THESE STEPS IS OK?
>
> thanks
>
>
> On Fri, Feb 17, 2012 at 8:41 PM, Sarah Goslee <sarah.goslee@gmail.com>wrote:
>
>> Without knowing which of the many nmds() functions out there
>> you're using:
>>
>> NMDS doesn't have dependent and independent variables. Can
>> you explain further what you're trying to do?
>>
>> The stress should be interpreted according to the documentation of
>> the particular function you're using, since there are several ways to
>> calculate it. In general, high stress is bad (here as in so many places).
>>
>> Sarah
>>
>> On Fri, Feb 17, 2012 at 11:42 AM, Mahnaz Rabbaniha <rab.mahnaz@gmail.com>
>> wrote:
>> > Dear all
>> >
>> > I have done nmds in PAST, but i have question?
>> >
>> > can we put independent and dependent variable in a data sheet for plot
>> > coordination?
>> >
>> > how can interpret the stress for example: 0.14 ,0.2.?
>> >
>> > thanks
>> >
>> > --
>> > Mahnaz
>> >
>>
>>
>> --
>> Sarah Goslee
>> http://www.functionaldiversity.org
>>
>
>
>
> --
> Mahnaz Rabbaniha
> Senior expert of marine ecology
> Iranian Fisheries Research Organization (IFRO)
> P.O.Box: 14155-6116 , P.Code: 1411816618*
> Tehran, IRAN
> Phone:   +98 21 44580953
> Fax:       +98 21 44580583
> Mobile:  +98 912 5790377
>
>
>
>
>
>

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