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(Morlaix macrofauna, Amoco-Cadiz oil spill)
Close the World cities worksheet (it will not be needed again) and re-open workspace Morlaix ws, ...
Animating the mMDS/nMDS iterations
Another feature introduced in PRIMER 7 is more of a teaching tool than an analysis method per se,...
Identifying points on the Shepard plot
Show this by running the matching nMDS to the above mMDS, this time setting (Minimum stress: 0.00...
Metric MDS; (Great-circle distances for world cities)
A significant new feature in PRIMER 7 is the construction of metric MDS ordinations (mMDS), toget...
Bubble data selection error & Refresh
It is worth repeating the point made at the start of these examples on bubble plots: if the routi...
Bubble plots on averages
For these data, a segmented bubble plot on a 2-d ordination provides a succinct summary of the re...
(Bristol Channel zooplankton)
The BC zooplankton density data sheet in C:\Examples v7\BC zooplankton was used in the last half ...
Environment bubble & vector plots
An important use for a bubble plot is in displaying the behaviour of a further measured variable,...
Duplicate graphs
Abra prismatica appears to be a species which can tolerate the contaminant or disturbance effects...
Bubble images
A further new option on this Key dialog is to replace single-coloured circles with a (rectangular...
Bubble key
The key to the left of the plot, which gives the root-transformed scale for Abra prismatica count...
Matching variable sets; (Ekofisk oil-field study)
The final two sections of the Graph>Special dialog concern overlaying vectors and ‘bubbles’ of nu...
(Tees Bay macrofauna time series)
A clearer, static, example of the benefits of split trajectories on ordination plots is provided ...
Trajectories split & then sequence animated
In fact, if the animation is repeated with trajectories running across months, separately drawn f...
Sequence animation, captured in 2- & 3-d
The time pattern above is evident from simple addition of the trajectory but there are occasions ...
Overlay trajectories
A trajectory joining points on an ordination is simply added using Graph>Special>Overlays and tak...
Higher-d & scree plots (WA fish diet)
Run nMDS at a wider range of dimensionalities than the default and ask for a scree plot: Analyse>...
(W Australia fish diets)
Re-open the workspace WA fish ws from C:\Examples v7\WA fish diets, which will provide an example...
3-d ordination plots & axes selection
As we have seen for the nMDS run on the Exe nematode data, in the first graphic of this Section, ...
Cluster overlays on MDS plots
The second way in which a cluster analysis can be displayed on a 2-d MDS plot, to aid assessment ...