Drawing a data chart
Problem
You want to draw a chart from CallWeb data and insert it in a questionnaire.
Solution
Use the calc_graph function in a CALCUL question.
Discussion
CallWeb uses the Highcharts JavaScript system to produce data charts. The calc_graph function provides an easy way to build these charts.
calc_graph can be callwed in a CALCUL question or in an <execute></execute> substitution. The call works this way:
Here is the list of available options; only one is mandatory.