How to Map Text Analysis

This article describes how to create a 2-dimensional map visualizing the tokens in a Text Analysis output based on their frequency patterns. The area of the markers is proportional to the number of respondents who used the token, whereas the position is determined by the selected dimension-reduction method (e.g., t-SNE, PCA, MDS).

Requirements

A Displayr document containing a setup text analysis object.

Please note these steps require a Displayr license.

Method

From the toolbar, go to Anything > Visualization > Text Analysis > Advanced > Map.
Under Data > Data Source > Text analysis output select an existing Setup Text Analysis object.
Ensure the Calculate automatically box is checked, or click Calculate.

OPTIONAL: The following settings can be adjusted to modify the map output:

From Data Source:

Minimum frequency - Threshold number of times a token must occur before being included in the analysis.

From Algorithm:

Algorithm - The dimension reduction method used to group and position the tokens. Details about parameters controlling the algorithm can be found in t-SNE, Principal Component Analysis, and Multidimensional Scaling.

From the Chart tab of the object inspector:

Label font family - Font family of labels in the scatterplot.
Label font size - Font size of labels in the scatterplot.
Maximum number of labels - Specify the number of points showing labels. To avoid too many labels making the chart unreadable, the rest of the labels can be seen by hovering over the points.
Marker opacity - Opacity of the markers ranging from 0 (transparent) to 1 (opaque).
Maximum marker diameter - This controls how the size of the markers will be scaled.