The related texts may also be viewed as a histogram sorted by the number of shared lines.
This map shows how many lines from a specified script appear in other plays, and can help investigations into the relationships between them.
The specified primary text is show in red on the map as are others of the same date. The texts marked in yellow are of earlier date, and are therefore potential sources of textual material in the primary script, whether direct or indirect. The blue markers are for more recent plays, which potentially could have derived some or all of their lines from the primary script - again either directly or indirectly.
Because they are mostly in verse, it is easy to split folk play texts into lines. Each line type in the database has been given a unique numeric Standard Identifier (Std.ID) to aid comparison, allowing for minor variations in wording. Sometimes significant wording variations are consistent, in which case they are assigned variant Std.IDs. For instance: "If you don't believe in what I say" is Std.ID 1450, whereas the variant "If you don't believe the words I say" is 1452. One variant will probably have evolved from the other, although it may not be possible to determine the direction of flow.
Markers are sized according to the number of lines a given text shares with the primary script.
- Marker sizes represent the number of matching lines at each location [default].
The closer the size of a marker is to that of the primary script, the closer the relationship.
- Marker sizes represent the number of matching lines as a percentage of the primary script.
This option is the same as the previous option, but the caption ties in with the options for marker labels.
- Marker sizes represent the number of matching lines as a percentage of the local script.
This option allows for the primary script and the matched text being of different sizes. With the other size options, all the lines of a matched text could be present in the primary script, but if it is smaller, the size of the marker may underplay the relationship. However, the significance of the connection becomes more obvious if the marker sizes represent the percentage of the local script matched.
Omitting Texts with Fewer Line Matches than a Specified Threshold
Some lines are so common, formulaic or generic (e.g. 'We wish you a merry Christmas') that they muddy the water when trying to pin down relationships between texts. Setting a minimum threshold of matched lines for play to appear on the map helps suppress this 'noise'. Such a threshold would typically be an odd number less than 10.
Omitting Known Composite Scripts Prepared by Literary Authors
Composite texts are by their nature atypical, often combining textual matter from widely separated geographical regions. Composite texts are usually placed on the map at the compiler's home, which in effect being random can distort the apparent distribution of text relatives. It can therefore be appropriate to omit composite scripts, unless they are the subject of your investigation.
Omitting Chapbooks, Broadsides & Commercial Texts
Commercially published texts are located at the place of publication, which may or may not be where the play was actually performed. It can sometimes therefore be appropriate to omit such texts from the map.
Select a different primary text: