Dashboard Configuration: Rendering channels
From MoodleDocs
The Dashboard Block provides several channels for plotting output. Each Channel is enabled independantly:
Show data : Shows a raw or transformed data grid with results data. Show graph : Shows the plotted representation of data, if properly configured. Show summarizers : If summarizers have been configured, add them tou output. Show query : Show the processed query just before submission to database (for debug) Show filtering query : Shows the query that is processed to get filtering values.