One of the types of objects in Praat.
An object of type Configuration represents the positions of a number of labelled points in a multidimensional space.
How to create a Configuration
From the New menu:
- • Create Configuration...
By multidimensional scaling:
- • Dissimilarity: To Configuration (monotone mds)...
- • Dissimilarity: To Configuration (i-spline mds)...
- • Dissimilarity: To Configuration (interval mds)...
- • Dissimilarity: To Configuration (ratio mds)...
- • Dissimilarity: To Configuration (absolute mds)...
By multidimensional scaling with weights (Dissimilarity & Weight: To Configuration...):
- • Dissimilarity & Weight: To Configuration (monotone mds)...
- • Dissimilarity & Weight: To Configuration (i-spline mds)...
- • Dissimilarity & Weight: To Configuration (interval mds)...
- • Dissimilarity & Weight: To Configuration (ratio mds)...
- • Dissimilarity & Weight: To Configuration (absolute mds)...
By multidimensional scaling with a start Configuration:
- • Dissimilarity & Configuration: To Configuration (monotone mds)...
- • Dissimilarity & Configuration: To Configuration (i-spline mds)...
- • Dissimilarity & Configuration: To Configuration (interval mds)...
- • Dissimilarity & Configuration: To Configuration (ratio mds)...
- • Dissimilarity & Configuration: To Configuration (absolute mds)...
By transforming an existing Configuration:
- • Configuration: To Configuration (varimax)...
- • Configuration & AffineTransform: To Configuration
- • Configuration & Procrustes: To Configuration
From Principal component analysis:
- • TableOfReal: To Configuration (pca)...
- • PCA & TableOfReal: To Configuration...
From Discriminant analysis:
- TableOfReal: To Configuration (lda)...
- • Discriminant & TableOfReal: To Configuration...
How to draw a Configuration
- • Configuration: Draw...
- • Configuration: Draw as numbers...
- • Configuration: Draw as squares...
How to modify a Configuration
- • Configuration: Randomize
- • Configuration: Rotate (pc) (to principal directions)
- • Configuration: Rotate... (in a plane around the origin)
- • Configuration: Invert dimension...
- • Configuration: Normalize...
Inside a Configuration
With Inspect you will see the following attributes:
- numberOfRows
- the number of points (numberOfPoints≥1).
- numberOfColumns
- the dimension of the space (numberOfDimensions≥1).
- rowLabels
- the names associated with the points.
- columnLabels
- the names for the dimensions.
- data [1..numberOfPoints] [1..numberOfDimensions]
- the coordinates of the points.
- metric
- determines the way distances between points are measured. In general the distance between points xi and xj is:
| dij = (∑k=1..numberOfDimensions wk |xik – xjk|metric)1/metric |
- For Euclidean distances metric is 2.
- w [1..numberOfDimensions]
- weight given to each dimension in the distance calculation.
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© djmw 20101102