inst/examples/NorthAmerica.md

In COMHIS/estc: English Short Title Catalogue (ESTC) Metadata Toolkit

title: "Summaries on North America" author: "Leo Lahti" date: "2018-04-26" output: markdown_document

Read the preprocessed ESTC data table and load tools:

# Pick USA documents only
sel.country <- "USA"
df <- filter(df.preprocessed, country == sel.country)

## Error in filter_impl(.data, quo): Evaluation error: object 'country' not found.

df$unity <- rep(1, nrow(df))

We have 480208 documents from USA.

Most common authors from USA

p <- top_plot(df, "author", 20)
p <- p + ggtitle(paste("Most common authors from", sel.country))
p <- p + ylab("Documents") + xlab("")
print(p)

Top titles

p <- top_plot(df, "title", 20)
p <- p + ggtitle(paste("Most common titles from", sel.country))
p <- p + ylab("Documents") + xlab("")
print(p)

Historical publication volumes for top-5 publication places

Average annual output for each decade is shown by lines, the actual annual document counts are shown by points.

COMHIS/estc documentation built on April 7, 2022, 4:53 p.m.