featureSignifGUI {feature}

GUI for feature significance for kernel density estimation

Description

GUI for feature significance for kernel density estimation.

Usage

featureSignifGUI(x, scaleData=FALSE)

Arguments

x

data matrix

scaleData

flag for scaling the data to the unit interval in each dimension

Details

In the first column are the sliders for selecting the bandwidths (one for each dimension). Move the slider buttons to change the value of the bandwidths. The text field is for the grid size which specifies the number of points in each dimension of the kernel estimation binning grid. Press the Compute significant features button to begin the computation. This creates a plot of the kernel density estimate (KDE) from the data with the specified bandwidths by calling featureSignif. Once this complete, a pop-up window will appear.

In the second column are the axis limits and labels. The last text field is for the (maximum) number of data points used in the display. Press the Reset plot (except KDE) button to clear the plot of all added features except for the KDE itself.

In the third column are 5 buttons which can be used to add to the KDE plot such as the data points, significant gradient points/regions and significant curvature points/regions. For 1-d data, the button in the third column is Compute SiZer map. Press this button to compute a gradient SiZer plot using the SiZer function. Once this complete, a pop-up window will appear. For 2- and 3-d data, the button in the third column is Reset plot. This will clear the plot of all features as well as the KDE. This is useful for showing only the significant features when the KDE may interfere with their display.

For 3-d data, there is an extra fourth column of options: these are sliders for the transparency values for the features. Move the slider button along to the desired value (between 0 and 1) and then press the Add ... button to the left. Repeatedly pressing the Add ... button will cause the transparency of the features to decrease. In this case, press the one of the Reset plot buttons to clear the plot window, and replot the significant feature with the desired transparency.

Examples

if (interactive()){
library(MASS)
data(geyser)
duration <- geyser$duration 
featureSignifGUI(duration)  ## univariate example
featureSignifGUI(geyser)    ## bivariate example

data(earthquake)            ## trivariate example
earthquake$depth <- -log10(-earthquake$depth)
featureSignifGUI(earthquake, scaleData=TRUE)
}