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Similarity to dissimilarity
L&L also assign $D_{14}$ to Bray-Curtis dissimilarity, the complement of $S_{17}$, defined earlie...
2.4 Species similarities
Starting with the original data matrix of abundances (or biomass, area cover etc), the similarity...
1.1 PRIMER has a lot going for it
PRIMER has a special focus - robust multivariate methods PRIMER is a specialised piece of softwar...
(Particle sizes for Danish sediments)
Sediment particle size data from 6 size ranges at 3 sites (A, B, C), at 2 depths (2m and 5m), and...
Cumulating samples
The remaining option on the Pre-treatment menu is Cumulate samples, which successively adds up th...
Mixed data types
Another example might be in attempting to reconcile two different types of data in the same matri...
Standardising samples
How the data are treated, prior to computation of a resemblance matrix (e.g. similarities), can h...
Importing factors
New factors can be created at several stages during an analysis, not just when the active window ...
Duplicating a selected worksheet
Though most Save operations are on whole workspaces, occasionally a data matrix needs to be saved...
Control of highlighting
Thus, with the WA fish diets %vol datasheet as the active window, highlight all columns except th...
(W Australia fish diets)
Dietary data on the gut contents of 7 marine fish species found in nearshore waters of the lower ...
Label matching
Alternatively, the same endpoint could have been achieved by Adding three new blank factors to th...
A three-factor hierarchical design
We will run PERMANOVA on an example dataset consisting of assemblages of molluscs collected from ...
4.2 Should I use PRIMER or R? (in short)
Use Both! The take-home message here is: use both! Neither replaces the other. They are good at d...
3.6 Summarising the comparison
In summary: I recommend using PERMANOVA in PRIMER. I do not recommend using adonis2 in R. Except...
2.1 R has a lot going for it
R is a general tool (). It is a statistical programming language (). There are a lot of people us...
2.3 Pros and Cons of using R
To re-cap and summarise, below is a table outlining the primary pros and cons of using R, as I se...
1.3 Pros and Cons of using PRIMER
To re-cap and summarise, below is a table outlining the primary pros and cons of using PRIMER, as...
Matrix display
The Matrix display wizard produces a shade plot of a multivariate data matrix, with a useful orde...
Editing labels
Take File>Open>(Filename: Tasmania copepods v4.pm1)>Type•Species-sample to input this (archival) ...