Selective Raster Graphics

This report explores ways to render specific components of an R plot in raster format, when the overall format of the plot is vector. For example, we demonstrate ways to draw raster data symbols within a PDF scatter plot. A general solution is provided by the grid.rasterize function from the R package ‘rasterize’.本报告探讨了在绘图整体采用矢量格式的前提下，将R语言绘图中的特定组件以栅格格式渲染的方法。例如，本报告演示了如何在PDF格式散点图中绘制栅格数据符号。R包‘rasterize’中的grid.rasterize函数提供了一种通用解决方案。