# plot.fssa: Plot Functional Singular Spectrum Analysis Objects In Rfssa: Functional Singular Spectrum Analysis

## Description

This is a plotting method for objects of class functional singular spectrum analysis (`fssa`). The method is designed to help the user make decisions on how to do the grouping stage of univariate or multivariate functional singular spectrum analysis.

## Usage

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13``` ```## S3 method for class 'fssa' plot( x, d = length(x\$values), idx = 1:d, idy = idx + 1, contrib = TRUE, groups = as.list(1:d), type = "values", vars = NULL, ylab = NA, ... ) ```

## Arguments

 `x` An object of class `fssa`. `d` An integer which is the number of elementary components in the plot. `idx` A vector of indices of eigen elements to plot. `idy` A second vector of indices of eigen elements to plot (for `type="paired"`). `contrib` A logical where if the value is `TRUE` (the default), the contribution of the component to the total variance is displayed. `groups` A list or vector of indices determines grouping used for the decomposition(for `type="wcor"`). `type` The type of plot to be displayed where possible types are: `"values"` plot the square-root of singular values (default) `"paired"` plot the pairs of eigenfunction's coefficients (useful for the detection of periodic components) `"wcor"` plot the W-correlation matrix for the reconstructed objects `"vectors"` plot the eigenfunction's coefficients (useful for the detection of period length) `"lcurves"` plot of the eigenfunctions (useful for the detection of period length) `"lheats"` heatmap plot of the eigenfunctions which can be used for `fts` variables observed over one or two-dimensional domains (useful for the detection of meaningful patterns) `"periodogram"` periodogram plot (useful for the detecting the frequencies of oscillations in functional data). `vars` A numeric specifying the variable number (can be used in plotting MFSSA `"lheats"` or `"lcurves"`). `ylab` The character vector of name of variables. `...` Arguments to be passed to methods, such as graphical parameters.

## Note

See `fssa` examples.

`fssa`, `plot.fts`