# Choose a chart type There are 17 JFreeChart chart types built into Report Designer, with some of them changing significantly based on which data collector you choose. If you want to show the strength of a trend for a single value over time, the best chart types are: * Line * Area * XY StepArea * XY Step * XY Line If you are directly comparing two or more related values, the best chart types to choose are: * Pie * Ring * Bar * Line * Area * Radar If you want to show how one set of values directly affects another, the best chart types are: * Bar line combination * Waterfall If you are comparing a large number of data points, the best chart types are: * XY Difference * XY Dot (Scatter plot) * Bubble * Pie Grid (Multi-Pie) If you need to show a trend among a small number of related numerical data points, a sparkline chart may be appropriate. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.pentaho.com/pba-report-designer/10.2-report-designer/add-a-chart/choose-a-chart-type.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.