These functions create a heatmap showing the frequencies with which specific possible entity values occur for the intersection of two entities - or they create the underlying frequency table for the set of sources or just one source. You usually only use heatMap_from_rxs, which takes the object with Rxs trees and creates a heatmap.

heatMap_from_freqTab(
freqTab,
rowOrder = rownames(freqTab),
colOrder = colnames(freqTab),
rowLab = "Row",
colLab = "Column",
freqLab = "Frequency",
plotTitle = paste0("Frequency Table for ", rowLab, " and ", colLab),
xLabelRotationAngle = 45,
legend.position = "right",
fillScale = ggplot2::scale_fill_viridis_c(),
theme = ggplot2::theme_minimal()
)

heatMap_from_rxsProject(
x,
rowRegex,
colRegex,
freqTabArgs = NULL,
rowOrder = NULL,
colOrder = NULL,
rowLab = "Row",
colLab = "Column",
freqLab = "Frequency",
plotTitle = paste0("Frequency Table for ", rowLab, " and ", colLab),
xLabelRotationAngle = 45,
legend.position = "right",
flattenValues = TRUE,
fillScale = ggplot2::scale_fill_viridis_c(),
theme = ggplot2::theme_minimal()
)

rxsProject_to_freqTab(
x,
rowRegex,
colRegex,
rowTargetValue = NULL,
colTargetValue = NULL,
fillValue = 0,
rowColMultiplicationFunction = *,
rowTargetFunction = ==,
colTargetFunction = ==,
aggregationFunction = +,
rowLabels = NULL,
colLabels = NULL,
rowOrder = NULL,
colOrder = NULL,
sortRowsAlphabetically = TRUE,
sortColsAlphabetically = TRUE,
includeValueListsOfMatch = TRUE,
flattenValues = TRUE,
excludeParentWhenValueListReturned = TRUE,
silent = metabefor::opts$get("silent") ) rxsTreeList_to_freqTab( x, rowRegex, colRegex, rowTargetValue = NULL, colTargetValue = NULL, fillValue = 0, rowColMultiplicationFunction = *, rowTargetFunction = ==, colTargetFunction = ==, aggregationFunction = +, rowLabels = NULL, colLabels = NULL, rowOrder = NULL, colOrder = NULL, sortRowsAlphabetically = TRUE, sortColsAlphabetically = TRUE, includeValueListsOfMatch = TRUE, flattenValues = TRUE, excludeParentWhenValueListReturned = TRUE, silent = metabefor::opts$get("silent")
)

rxsTree_to_freqTab(
x,
rowRegex,
colRegex,
rowTargetValue = NULL,
colTargetValue = NULL,
valuePreprocessingFunction = vectorValue_to_valueList,
rowColMultiplicationFunction = *,
rowTargetFunction = ==,
colTargetFunction = ==,
rowLabels = NULL,
colLabels = NULL,
rowOrder = NULL,
colOrder = NULL,
sortRowsAlphabetically = TRUE,
sortColsAlphabetically = TRUE,
includeValueListsOfMatch = TRUE,
flattenValues = TRUE,
excludeParentWhenValueListReturned = TRUE,
silent = metabefor::opts\$get("silent")
)

## Arguments

freqTab

The frequency table (as produced by rxsTreeList_to_freqTab).

rowOrder, colOrder

The order of the row and column entities/values.

rowLab, colLab, freqLab, plotTitle

The labels to use for the rows (y axis), columns (x axis), frequencies (fill), and the plot title to use.

xLabelRotationAngle

The angel to rotate the labels on the X axis.

legend.position

The position of the legend.

fillScale

The fill scale to use.

theme

The ggplot2 theme to use.

x

The Rxs object or the Rxs tree for which to produce the frequency table.

rowRegex, colRegex

Regular expressions used to find the entities that will form the rows or columns

freqTabArgs

Arguments to pass to the frequency table functions.

flattenValues

Whether to flatten values that are vectors into single string values that represents those values, or not (in which case they remain vectors, and so single sources occur multiple times in the frequency table).

rowTargetValue, colTargetValue

Value to consider a 'hit' for the row and column entities

fillValue

The value to insert in rows or columns that have to be added because of inconsistencies between extraction scripts

rowColMultiplicationFunction

The function to use to multiply the rows and columns into the matrix

rowTargetFunction, colTargetFunction

Functions to use to compare, the entity values found for the rows and columns to the target values (e.g. ==, >, <, etc).

aggregationFunction

The function to use to aggregate matrices

rowLabels, colLabels

A names vector used to replace row and column labels; the indices (element names) should be the entity identifiers and the values the labels to use.

sortRowsAlphabetically, sortColsAlphabetically

Whether to sort columns or rows alphabetically.

includeValueListsOfMatch

Whether to also include the value lists inside matching entities (useful for quickly selecting e.g. all results)

excludeParentWhenValueListReturned

Whether, if an entity matches, has a value list as value, and those value lists are returns (i.e. includeValueListsOfMatch is TRUE), the parent entity (that matched the regular expression) should be excluded.

silent

Whether to be silent or chatty.

valuePreprocessingFunction

The function to use to preprocess values - only for advanced use.

## Value

A ggplot or a frequency table

## Details

The underlying frequency table is produced in a number of steps. First, the values of the entities matching the regular expressions are obtained. Second, the row and column target functions are applied to these values (as first argument) and to the specified row and column target values (as second argument). Then, the rowColMultiplicationFunction is applied to the result to obtain the value for the cell. Finally, if rxs_to_freqTab is called, aggregationFunction is called on the frequency tables of the separate sources.