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SCATTERD
H = SCATTERD(A)
H = SCATTERD(A,DIM,S,CMAP,FONTSIZE,'label','both','legend','gridded')
| Input | |
| A | Dataset or matrix |
| DIM | Number of dimensions: 1,2 or 3 (optional; default: 2) |
| S | String specifying the colors and markers (optional) |
| CMAP | Matrix with a color map (optional) |
| Output | |
| H | Vector of handles |
SCATTERD(A) displays a 2D scatterplot of the first two features of the dataset A. If the number of dimensions DIM is specified (1..3), it plots the first D features in a D-dimensional plot (D<4). If the plot string S is provided, e.g. S = 'w+', all points are plotted accordingly. If given, different plot strings are used for different classes. See PLOT for the specification of plot strings.
If CMAP is specified, the color of the object symbols is determined by CMAP indexed by the object labels. A colormap has the size [C x 3], where C is the number of classes. The three components of CMAP(I,:) determine the red, green and blue components of the color. For instance
MAP = HSV; [M,K] = SIZE(A); LABELS = CEIL(64*[1:M]'/M);
A = DATASET(A,LABELS); SCATTERD(A,'.','COLORMAP',MAP);
This may be used for tracking ordered objects.
FONTSIZE may be a vector with three elements: fontsize, markersize and size of the label font in case of a label plot.
Various other options are
'LABEL' : plot labels instead of symbols
'BOTH' : plot labels next to each sample
'LEGEND' : place a legend in the figure
'GRIDDED': make a grid of 2D scatterplots of each pair of features
All the parameters, except for the dataset A can be specified in any order or can be left out.
Classifiers can be plot in the scatterplot by PLOTC. Note that PLOTC does not work for 1D and 3D scatterplots.
prex_confmat, prex_density, prex_plotc, prex_mcplot,
datasets, colormap, plot, plotc,
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