{#- vim: set ft=htmldjango : -#} {% from 'docs/vis-documentation-macros.html' import full_documentation_link with context %} {% if show_figures %}
The confidence view. Aspects of confidence are listed as columns, and confidence levels ordered into rows. Checkboxes control which confidence levels should be shown for each aspect, and the number of pieces of evidence for each confidence level and aspect are given.
{% endif %}

This view shows the different levels of confidence attributed to the different elements of a piece of evidence (i.e., place, religious group, time span, etc.).

Contents

The view consists of a table, in which each row represents one level of confidence and each column an aspect of confidence.

For each cell in the table, a checkbox for filtering (cf. {{ full_documentation_link('confidence-filtering', 'further below', true) }}) is displayed as well as the number of pieces of evidence with the respective confidence and aspect. The rows are sorted by descending level of confidence.

Levels of Confidence

Generally, the confidence of any given information was categorized according to these 5 degrees:

In addition, a confidence can have no value at all (green).

Note: The attribution with no value is used while data is still being collected and usually does not appear in a published instance of this visualization. A notable exception are places, especially regions, with no geographical coordinates. In that case, no attribution of confidence except no value is suitable.

Aspects of Confidence

Confidence is attributed to different aspects of the data:

Timespan confidence
signifies the confidence in the veracity of the timespan stored in a piece of evidence. Pieces of evidence without a time attribute are assigned the confidence no value.
Confidence of location
signifies the confidence in the geographical location of a place. Some places, especially regions, have no value (cf. {{ full_documentation_link('confidence-note-no-place-confidence-value', 'above', 'true') }}).
Confidence of place attribution
signifies the confidence in assigning a location from the database to a toponym from a source.
Confidence regarding the source
signifies the confidence in the veracity and objectivity of the source itself regarding a piece of evidence.
Confidence of interpretation
signifies the confidence in the correct interpretation and recording of the source when entering a piece of evidence into the database.
Confidence regarding religion
signifies the confidence in the veracity of the presence of a particular religious group at a given time and place.

Interaction

Filtering

For each aspect of confidence and each confidence level, a checkbox is shown in the respective cell. Unchecking a checkbox will filter out pieces of evidence with this confidence level for that aspect of confidence. This allows for a very fine-grained control over what data to visualize.

Note that the selection is not applied until the Apply button is clicked. This button is disabled if the selected filters are matching the data currently visualized.

The filters work in logical conjunction across different aspects of confidence; that is, having filters in place for multiple aspects of confidence will only show pieces of evidence that match all filters.

Four additional buttons in the top left corner make filtering more convenient:

Uncheck all
Uncheck all checkboxes.
Invert
Invert all checkboxes. Checked boxes are unchecked, unchecked boxes are checked.
Check all
Check all checkboxes.
Default
Revert the selection of checkboxes to the default. By default, all confidence levels are selected for confidence of location, and only certain and probable for the other confidence aspects.

In addition, entire rows or columns of checkboxes can be set to either checked or unchecked by clicking the row header (the confidence levels) or the column header (the aspects of confidence). Here, the new value for the new row (or column) is the inverse of what the majority of values (3 or more) was before; for example, if 4 checkboxes were checked and 2 unchecked for the uncertain row, clicking on the row header would uncheck all checkboxes in the row.

Visualized Aspect of Confidence

By clicking on the eye in the bottom row of each column, the aspect of confidence that is visualized in Confidence mode (cf. {{ full_documentation_link('settings-display-mode', 'Display mode') }} in the settings pane) can be selected. The currently selected aspect is indicated by a colored eye. By default, confidence regarding religion is used.