readme.md

Add graphics with renderer

Change the style of all graphics in a graphics overlay by referencing a single symbol style.

Use case

A renderer allows you to change the style of all graphics in an overlay by only changing one copy of the symbol. For example, a user may wish to display a number of graphics on a map of parkland which represent trees, all sharing a common symbol.

How it works

1. Create a GraphicsOverlay and add it to the MapView.
2. Create a Graphic, specifying only a Geometry.
3. Create a single Symbol such as a SimpleMarkerSymbol.
4. Create a renderer with the Symbol such as new SimpleRenderer(symbol).
5. Set the renderer on the GraphicsOverlay with graphicsOverlay.Renderer = renderer.

Relevant API

• Geometry
• Graphic
• GraphicsOverlay
• SimpleFillSymbol
• SimpleLineSymbol
• SimpleMarkerSymbol
• SimpleRenderer

Additional information

A renderer will only effect graphics that do not specify their own symbol style.

To set unique symbols across a number of graphics (e.g. showing graphics of individual landmarks) see "Add graphics with symbols" sample.

Tags

GraphicsOverlay, SimpleMarkerSymbol, SimpleRenderer