Initial Sunburst Chart Visualization Operator

[dgeyfman]

Purpose:

This PR introduces a new visualization operator: Sunburst Chart. The Sunburst Chart visualizes hierarchical data, where each segment's size corresponds to a specific value attribute, allowing users to explore data hierarchically.

Changes:

• Implemented the Sunburst Chart operator under operators/visualization.
• Registered the Sunburst Chart in the LogicalOp array (located in edu.uci.ics.texera.workflow.common.operators).
• Added a Sunburst Chart icon under the operator images.

Testing Instructions:

Open Texera workflow editor.
Use the following operators:

• Use the CSV File Scan operator to load the CountrySalesData.csv file (available on the Getting Started Wiki).
• Use the Sunburst Chart operator with the hierarchy: Region → Country, and set the value to Units Sold.
• Use the HTML Visualizer to point at the HTML content produced by the Sunburst Chart operator.
• Use the View Results operator to display the output.

Expected Result:

[aglinxinyuan]

LGTM!

[kunwp1]

The sunburst chart is already in the codebase as a hierarchychart operator. Can you revert this change??

[aglinxinyuan]

The sunburst chart is already in the codebase as a hierarchychart operator. Can you revert this change??

That's a good point. We may want to keep list of exciting charts in wiki otherwise it's very hard to figure out the chart is already existing.

[kunwp1]

The sunburst chart is already in the codebase as a hierarchychart operator. Can you revert this change??

That's a good point. We may want to keep list of exciting charts in wiki otherwise it's very hard to figure out the chart is already existing.

I do agree that we need to have a list somewhere. I noticed this link has a list in the description but it is outdated.

[dgeyfman]

Definitely, I will change the operator to another one we need.