qheat: Quick Heatmap

In qdap: Bridging the Gap Between Qualitative Data and Quantitative Analysis

Quick Heatmap

Description

A quick heatmap function for visualizing typical qdap dataframe/matrix outputs.

Usage

qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

## Default S3 method:
qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

## S3 method for class 'diversity'
qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

## S3 method for class 'termco'
qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

## S3 method for class 'word_stats'
qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

## S3 method for class 'character_table'
qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

## S3 method for class 'question_type'
qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

## S3 method for class 'pos_by'
qheat(
  mat,
  low = "white",
  high = "darkblue",
  values = FALSE,
  digits = 1,
  text.size = 3,
  text.color = "grey40",
  xaxis.col = "black",
  yaxis.col = "black",
  order.by = NULL,
  grid = "white",
  by.column = TRUE,
  auto.size = FALSE,
  mat2 = NULL,
  plot = TRUE,
  facet.vars = NULL,
  facet.flip = FALSE,
  diag.na = FALSE,
  diag.values = "",
  ...
)

Arguments

mat	A matrix or dataframe produced by many qdap functions in which the first column is the grouping variable and the rest of the matrix is numeric. Also accepts objects directly from word_stats and question_type.
low	The color to be used for lower values.
high	The color to be used for higher values.
values	logical. If TRUE the cell values will be included on the heatmap.
digits	The number of digits displayed if values is TRUE.
text.size	A integer size to plot the text if values is TRUE.
text.color	A character vector to plot the text if values is TRUE.
xaxis.col	A single character vector color choice for the high values.
yaxis.col	A single character vector color choice for the low values.
order.by	An optional character vector of a variable name to order the columns by. To reverse use a negative (-) before the column name.
grid	The color of the grid (Use NULL to remove the grid).
by.column	logical. If TRUE applies scaling to the column. If FALSE applies scaling by row (use NULL to turn off scaling).
auto.size	logical. If TRUE the visual will be resized to create square cells.
mat2	A second matrix equal in dimensions to mat that will be used for cell labels if values is TRUE.
plot	logical. If TRUE the plot will automatically plot. The user may wish to set to FALSE for use in knitr, sweave, etc. to add additional plot layers.
facet.vars	A character vector of 1 or 2 column names to facet by.
facet.flip	logical If TRUE the direction of the faceting is reversed.
diag.na	logical. If TRUE and mat is a symmetrical matrix the diagonals are set to NA. This is useful with correlation matrices because the diagonal of ones do not affect the scaling of the heatmap.
diag.values	The string to be used for the diagonal labels (values) if diag.na is set to TRUE. Default is to not print a value.
...	Not currently used.

Details

qheat is useful for finding patterns and anomalies in large qdap generated dataframes and matrices.

Note

qheat is a fast way of working with data formats produced by qdap. The function isn't designed to be extended beyond exploratory qdap usage.

Examples

## Not run: 
dat <- sentSplit(DATA, "state")
ws.ob <- with(dat, word_stats(state, list(sex, adult), tot=tot))
qheat(ws.ob)
qheat(ws.ob) + coord_flip()
qheat(ws.ob, order.by = "sptot", 
    xaxis.col = c("red", "black", "green", "blue"))
qheat(ws.ob, order.by = "sptot")
qheat(ws.ob, order.by = "-sptot")
qheat(ws.ob, values = TRUE)
qheat(ws.ob, values = TRUE, text.color = "red")
qheat(ws.ob, "yellow", "red", grid = FALSE)
qheat(mtcars, facet.vars = "cyl")
qheat(mtcars, facet.vars = c("gear", "cyl"))
qheat(t(mtcars), by.column=FALSE)
qheat(cor(mtcars), diag.na=TRUE, diag.value="", by.column=NULL, values = TRUE)

dat1 <- data.frame(G=LETTERS[1:5], matrix(rnorm(20), ncol = 4))
dat2 <- data.frame(matrix(LETTERS[1:25], ncol=5))
qheat(dat1, values=TRUE)
qheat(dat1, values=TRUE, mat2=dat2)

## End(Not run)

qdap documentation built on May 31, 2023, 5:20 p.m.