Plot correlation matrix as ellipses or tiles.

```
sjp.corr(
data,
title = NULL,
axis.labels = NULL,
sort.corr = TRUE,
decimals = 3,
na.deletion = c("listwise", "pairwise"),
corr.method = c("pearson", "spearman", "kendall"),
geom.colors = "RdBu",
wrap.title = 50,
wrap.labels = 20,
show.legend = FALSE,
legend.title = NULL,
show.values = TRUE,
show.p = TRUE,
p.numeric = FALSE
)
```

- data
Matrix with correlation coefficients as returned by the

`cor`

-function, or a`data.frame`

of variables where correlations between columns should be computed.- title
character vector, used as plot title. Depending on plot type and function, will be set automatically. If

`title = ""`

, no title is printed. For effect-plots, may also be a character vector of length > 1, to define titles for each sub-plot or facet.- axis.labels
character vector with labels used as axis labels. Optional argument, since in most cases, axis labels are set automatically.

- sort.corr
Logical, if

`TRUE`

(default), the axis labels are sorted according to the correlation strength. If`FALSE`

, axis labels appear in order of how variables were included in the cor-computation or data frame.- decimals
Indicates how many decimal values after comma are printed when the values labels are shown. Default is 3. Only applies when

`show.values = TRUE`

.- na.deletion
Indicates how missing values are treated. May be either

`"listwise"`

(default) or`"pairwise"`

. May be abbreviated.- corr.method
Indicates the correlation computation method. May be one of

`"pearson"`

(default),`"spearman"`

or`"kendall"`

. May be abbreviated.- geom.colors
user defined color for geoms. See 'Details' in

`plot_grpfrq`

.- wrap.title
numeric, determines how many chars of the plot title are displayed in one line and when a line break is inserted.

- wrap.labels
numeric, determines how many chars of the value, variable or axis labels are displayed in one line and when a line break is inserted.

- show.legend
logical, if

`TRUE`

, and depending on plot type and function, a legend is added to the plot.- legend.title
character vector, used as title for the plot legend.

- show.values
Logical, whether values should be plotted or not.

- show.p
Logical, adds significance levels to values, or value and variable labels.

- p.numeric
Logical, if

`TRUE`

, the p-values are printed as numbers. If`FALSE`

(default), asterisks are used.

(Insisibily) returns the ggplot-object with the complete plot (`plot`

) as well as the data frame that
was used for setting up the ggplot-object (`df`

) and the original correlation matrix
(`corr.matrix`

).

Required argument is either a `data.frame`

or a matrix with correlation coefficients
as returned by the `cor`

-function. In case of ellipses, the
ellipses size indicates the strength of the correlation. Furthermore,
blue and red colors indicate positive or negative correlations, where
stronger correlations are darker.

If `data`

is a matrix with correlation coefficients as returned by
the `cor`

-function, p-values can't be computed.
Thus, `show.p`

and `p.numeric`

only have an effect if `data`

is a `data.frame`

.