Usage
trans.cloud(text.var = NULL, grouping.var = NULL,
word.list = NULL, stem = FALSE, target.words = NULL,
expand.target = TRUE, target.exclude = NULL,
stopwords = NULL, min.freq = 1, caps = TRUE,
caps.list = NULL, random.order = FALSE, rot.per = 0,
cloud.colors = NULL, title = TRUE, cloud.font = NULL,
title.font = NULL, title.color = "black",
title.padj = -4.5, title.location = 3,
title.cex = NULL, title.names = NULL,
proportional = FALSE, max.word.size = NULL,
min.word.size = 0.5, legend = NULL, legend.cex = 0.8,
legend.location = c(-0.03, 1.03), char.keep = "~~",
char2space = NULL)Arguments
text.var
The text variable.
grouping.var
The grouping variables. Default NULL
generates one output for all text. Also takes a single
grouping variable or a list of 1 or more grouping
variables.
stem
logical. If TRUE the text.var will be
stemmed.
target.words
A named list of vectors of words
whose length corresponds to cloud.colors (+1
length in cloud colors for non matched terms).
expand.target
logical. If TRUE agrep will be used
to expand the target.words.
target.exclude
A vector of words to exclude from
the target.words.
stopwords
Words to exclude from the cloud.
min.freq
An integer value indicating the minimum
frequency a word must appear to be included.
caps
logical. If TRUE selected words will be
capitalized.
caps.list
A vector of words to capitalize
(caps must be TRUE).
random.order
Plot words in random order. If false,
they will be plotted in decreasing frequency.
rot.per
Proportion words with 90 degree rotation.
cloud.colors
A vector of colors equal to the
length of target words +1.
title
logical. IF TRUE adds a title corresponding
to the grouping.var.
cloud.font
The font family of the cloud text.
title.font
The font family of the cloud title.
title.color
A character vector of length one
corresponding to the color of the title.
title.padj
Adjustment for the title. For strings
parallel to the axes, padj = 0 means right or top
alignment, and padj = 1 means left or bottom alignment.
title.location
On which side of the plot
(1=bottom, 2=left, 3=top, 4=right).
title.cex
Character expansion factor for the
title. NULL and NA are equivalent to 1.0.
title.names
Optional vector of title names equal
in length to the grouping.var that will override the
default use of the grouping.var names.
proportional
logical. If TRUE scales the word
clouds across grouping.var to allow cloud to cloud
comparisons.
max.word.size
A size argument to control the
minimum size of the words.
min.word.size
A size argument to control the
maximum size of the words.
legend
A character vector of names corresponding
to the number of vectors in target.words.
legend.cex
Character expansion factor for the
legend. NULL and NA are equivalent to 1.0.
legend.location
The x and y co-ordinates to be
used to position the legend.
char.keep
A character vector of symbol character
(i.e. punctuation) that strip should keep. The default
is to strip everything except apostrophes. This enables
the use of special characters to be turned into spaces or
for characters to be retained.
char2space
A vector of characters to be turned
into spaces. If char.keep is NULL,
char2space will activate this argument.