Fennica in Finna
In finna: Access the 'Finna' API

Fennica

To search Fennica data in Finna

N.B In the search_finna() default limit of 100 records is being used. Specify 'limit' argument for more records.

library(finna)
fennica <- search_finna("*",filters=c('collection:"FEN"'))
print(fennica)

Bulk data

In order to download the whole data we can add the parameter limit = Inf as search_finna("*",filters=c('collection:"FEN"'), limit = Inf)

19th century fennica data

search the whole data and it total search of counts in the the interval between some years for example between the years 1809-1917 as follows:

library(finna)
fennica <- search_finna("*",filters = c('collection:"FEN"', 'search_daterange_mv:"[1808 TO 1918]"'))
print(fennica)

we can check the whole data count

library(finna)
fennica <- search_finna("*",filters = c('collection:"FEN"', 'search_daterange_mv:"[1809 TO 1918]"'))
result_count <- attr(fennica, "result_count")
print(result_count)

Visualization for fennica

We can use any of the functions provided to visualize the data

library(finna)
fennica <- search_finna("*",filters = c('collection:"FEN"', 'search_daterange_mv:"[1809 TO 1918]"'))
refined_data <- refine_metadata(fennica)

library(finna)
library(ggplot2)
fennica <- search_finna("*",filters = c('collection:"FEN"', 'search_daterange_mv:"[1809 TO 1918]"'))
refined_data <- refine_metadata(fennica)
top_plot(refined_data, field = "Year") +
  xlab("Publication Year") +  # Custom X-axis label
  ylab("Number of Publications")  # Custom Y-axis label

Notes:

Filters: The filters need to match the exact field names used in Finna's API. You can find these field names in the API documentation or by looking at the response from the API here.
Call Number Search: Ensure that the call numbers are correctly formatted according to the library's classification system (e.g., YKL in Finland).

This way, you can extract specific metadata like authors, publication years, and call numbers using the search_finna function.