Create a line graph with trends

Source: R/trends.R

a line plot

trends(df, x = NULL, y = NULL, start = NULL, end = NULL,
  weight = NULL)

Arguments

df

a data.frame as input
x

the column for the x axis
y

the value for the y axis (use n if count is generated by the function)
start

start year (numeric)
end

end year (numeric)
weight

The column to use as the weight (e.g. organisation, country etc)

Value

plot

Examples

# NOT RUN {
trends(lens, x = "publication_year", y = n, start = 1990, end = 2016)
# }