Squashed commit of the following:

commit 3bb2f744f63f96d6a9f2160f8c967749c80e42ab
Merge: fa4e49c cc0ba26
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Wed May 2 08:49:26 2012 +0300

    Merge branch 'master' of https://github.com/jarioksa/vegan

commit fa4e49ce75abf027347db8d6eca03d3415b0622e
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Sun Apr 29 09:04:57 2012 +0300

    monoMDS checks that there are enough dissimilarities for the analysis

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2150 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Squashed commit of the following:

commit 3bb2f744f63f96d6a9f2160f8c967749c80e42ab
Merge: fa4e49c cc0ba26
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Wed May 2 08:49:26 2012 +0300

    Merge branch 'master' of https://github.com/jarioksa/vegan

commit fa4e49ce75abf027347db8d6eca03d3415b0622e
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Sun Apr 29 09:04:57 2012 +0300

    monoMDS checks that there are enough dissimilarities for the analysis

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2150 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Revert "Fix calculation of ordimedian"

This reverts commit 8f956f1ebd9c56174d6c54b1633f4c27133071f3.
Change betadisper example now that median is the default

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2156 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Change betadisper example now that median is the default

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2156 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Merge branch 'r-forge-svn-local'
ordiplot3d returns projected origin and function envfit.convert

The envfit.convert function projects a 3-d envfit object to the
the current 3d plot, and together with projected origin can be used
to project the result to the plot:

mod <- cca(varespec)
ef <- envfit(mod ~ ., varechem, choices = 1:3)
pl3 <- ordiplot3d(mod)
plot(pl3$envfit.convert(ef), at = pl3$origin, p.max = 0.05)
Merge branch 'master' of https://github.com/jarioksa/vegan
Squashed commit of the following:

commit ffa3ddf9d62bc8d7afd62abe60fce9960625f474
Merge: ddad83c 4ebe87b
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Wed May 9 23:10:15 2012 +0300

    Merge branch 'master' of https://github.com/jarioksa/vegan

commit ddad83cce47306420223502d69cacc7f15e9c912
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Wed May 9 23:04:57 2012 +0300

    ordiplot3d returns projected origin and function envfit.convert

    The envfit.convert function projects a 3-d envfit object to the
    the current 3d plot, and together with projected origin can be used
    to project the result to the plot:

    mod <- cca(varespec)
    ef <- envfit(mod ~ ., varechem, choices = 1:3)
    pl3 <- ordiplot3d(mod)
    plot(pl3$envfit.convert(ef), at = pl3$origin, p.max = 0.05)

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2157 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Squashed commit of the following:

commit ffa3ddf9d62bc8d7afd62abe60fce9960625f474
Merge: ddad83c 4ebe87b
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Wed May 9 23:10:15 2012 +0300

    Merge branch 'master' of https://github.com/jarioksa/vegan

commit ddad83cce47306420223502d69cacc7f15e9c912
Author: Jari Oksanen <jari.oksanen@oulu.fi>
Date:   Wed May 9 23:04:57 2012 +0300

    ordiplot3d returns projected origin and function envfit.convert

    The envfit.convert function projects a 3-d envfit object to the
    the current 3d plot, and together with projected origin can be used
    to project the result to the plot:

    mod <- cca(varespec)
    ef <- envfit(mod ~ ., varechem, choices = 1:3)
    pl3 <- ordiplot3d(mod)
    plot(pl3$envfit.convert(ef), at = pl3$origin, p.max = 0.05)

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2157 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
rotated arrows must be expressed against projected origin in ordiplot3d

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2158 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
rotated arrows must be expressed against projected origin in ordiplot3d

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2158 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
matrix could drop to a vector in envfit.convert() returned by ordiplot3d

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2159 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
matrix could drop to a vector in envfit.convert() returned by ordiplot3d

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2159 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
example on envfit & ordiplot3d interfaces

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2160 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
example on envfit & ordiplot3d interfaces

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2160 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
update tests for r2160

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2161 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
update tests for r2160

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2161 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
try to get equal aspect ratio to ordiplot3d

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2162 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
try to get equal aspect ratio to ordiplot3d

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2162 edb9625f-4e0d-4859-8d74-9fd3b1da38cb