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:
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• Create Configuration...
By multidimensional scaling:
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• Dissimilarity: To Configuration (monotone mds)...
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• Dissimilarity: To Configuration (i-spline mds)...
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• Dissimilarity: To Configuration (interval mds)...
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• Dissimilarity: To Configuration (ratio mds)...
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• Dissimilarity: To Configuration (absolute mds)...
By multidimensional scaling with weights (Dissimilarity & Weight: To Configuration...):
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• Dissimilarity & Weight: To Configuration (monotone mds)...
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• Dissimilarity & Weight: To Configuration (i-spline mds)...
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• Dissimilarity & Weight: To Configuration (interval mds)...
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• Dissimilarity & Weight: To Configuration (ratio mds)...
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• Dissimilarity & Weight: To Configuration (absolute mds)...
By multidimensional scaling with a start Configuration:
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• Dissimilarity & Configuration: To Configuration (monotone mds)...
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• Dissimilarity & Configuration: To Configuration (i-spline mds)...
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• Dissimilarity & Configuration: To Configuration (interval mds)...
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• Dissimilarity & Configuration: To Configuration (ratio mds)...
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• Dissimilarity & Configuration: To Configuration (absolute mds)...
By transforming an existing Configuration:
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• Configuration: To Configuration (varimax)...
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• Configuration & AffineTransform: To Configuration
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• Configuration & Procrustes: To Configuration
From Principal component analysis:
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• TableOfReal: To Configuration (pca)...
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• PCA & TableOfReal: To Configuration...
From Discriminant analysis:
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TableOfReal: To Configuration (lda)...
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• Discriminant & TableOfReal: To Configuration...
How to draw a Configuration
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• Configuration: Draw...
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• Configuration: Draw as numbers...
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• Configuration: Draw as squares...
How to modify a Configuration
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• Configuration: Randomize
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• Configuration: Rotate (pc) (to principal directions)
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• Configuration: Rotate... (in a plane around the origin)
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• Configuration: Invert dimension...
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• Configuration: Normalize...
Inside a Configuration
With Inspect you will see the following attributes:
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numberOfRows
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the number of points (numberOfPoints≥1).
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numberOfColumns
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the dimension of the space (numberOfDimensions≥1).
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rowLabels
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the names associated with the points.
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columnLabels
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the names for the dimensions.
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data [1..numberOfPoints] [1..numberOfDimensions]
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the coordinates of the points.
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metric
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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 |
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For Euclidean distances metric is 2.
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w [1..numberOfDimensions]
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weight given to each dimension in the distance calculation.
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© djmw 20101102