Along with issues that concern expressions or object properties, we also tend to discover issues related to the data, load script, or model at the moment we create visualizations. Let's review the common issues based on their source in the following sections.
We always have to be prepared to review previous steps in the development process when we are diagnosing and fixing a data visualization issue.
The following screenshot is an example of what happens when the field that we use as a dimension has no relationship with the field(s) that we use in an expression:
This issue is especially common when we are making quick adjustments to a data model and delete a key field or rename it in only one table, thus breaking an existing link. Another reason may also be that we mistakenly add a field from a legitimate island table to a chart.
When we notice the issue illustrated in the previous...