sentometrics (version 0.7.5)

plot.sento_measures: Plot sentiment measures

Description

Plotting method that shows all sentiment measures from the provided sento_measures object in one plot, or the average along one of the lexicons, features and time weighting dimensions.

Usage

# S3 method for sento_measures
plot(x, group = "all", ...)

Arguments

x

a sento_measures object created using sento_measures.

group

a value from c("lexicons", "features", "time", "all"). The first three choices display the average of all measures from the same group, in a different color. The choice "all" displays every single sentiment measure in a separate color, but this may look visually overwhelming very fast, and can be quite slow.

...

not used.

Value

Returns a simple ggplot object, which can be added onto (or to alter its default elements) by using the + operator (see example). By default, a legend is positioned at the top if there are at maximum twelve line graphs plotted and group is different from "all".

Examples

# NOT RUN {
# construct a sento_measures object to start with
corpus <- sento_corpus(corpusdf = sentometrics::usnews)
corpusSample <- quanteda::corpus_sample(corpus, size = 500)
l <- sento_lexicons(sentometrics::list_lexicons[c("LM_en")],
                    sentometrics::list_valence_shifters[["en"]])
ctr <- ctr_agg(howTime = c("equal_weight", "linear"), by = "month", lag = 3)
sento_measures <- sento_measures(corpusSample, l, ctr)

# plot sentiment measures
plot(sento_measures, "features")

# }
# NOT RUN {
# adjust appearance of plot
library("ggplot2")
p <- plot(sento_measures)
p <- p +
  scale_x_date(name = "year", date_labels = "%Y") +
  scale_y_continuous(name = "newName")
p
# }
# NOT RUN {
# }