Compare feature expression correlation across two data sets.

plotCountsCorrelationHeatmap(x, y, ...)
# S4 method for matrix,matrix
plotCountsCorrelationHeatmap(x, y, i = NULL, j = NULL, method = "pearson", ...)

## Arguments

x |
Object. |

y |
Object. |

i |
indices specifying elements to extract or replace. Indices are
`numeric` or `character` vectors or empty (missing) or
`NULL` . Numeric values are coerced to integer as by
`as.integer` (and hence truncated towards zero).
Character vectors will be matched to the `names` of the
object (or for matrices/arrays, the `dimnames` ):
see ‘Character indices’ below for further details.
For `[` -indexing only: `i` , `j` , `...` can be
logical vectors, indicating elements/slices to select. Such vectors
are recycled if necessary to match the corresponding extent.
`i` , `j` , `...` can also be negative integers,
indicating elements/slices to leave out of the selection.
When indexing arrays by `[` a single argument `i` can be a
matrix with as many columns as there are dimensions of `x` ; the
result is then a vector with elements corresponding to the sets of
indices in each row of `i` .
An index value of `NULL` is treated as if it were `integer(0)` . |

j |
indices specifying elements to extract or replace. Indices are
`numeric` or `character` vectors or empty (missing) or
`NULL` . Numeric values are coerced to integer as by
`as.integer` (and hence truncated towards zero).
Character vectors will be matched to the `names` of the
object (or for matrices/arrays, the `dimnames` ):
see ‘Character indices’ below for further details.
For `[` -indexing only: `i` , `j` , `...` can be
logical vectors, indicating elements/slices to select. Such vectors
are recycled if necessary to match the corresponding extent.
`i` , `j` , `...` can also be negative integers,
indicating elements/slices to leave out of the selection.
When indexing arrays by `[` a single argument `i` can be a
matrix with as many columns as there are dimensions of `x` ; the
result is then a vector with elements corresponding to the sets of
indices in each row of `i` .
An index value of `NULL` is treated as if it were `integer(0)` . |

method |
a character string indicating which correlation
coefficient (or covariance) is to be computed. One of
`"pearson"` (default), `"kendall"` , or `"spearman"` :
can be abbreviated. |

... |
Passthrough arguments to
`plotHeatmap()` . |

## Value

Graphical output.

## Note

Updated 2019-07-29.

## Examples