Hello, We’re receiving reports of extremely slow rendering by users who are using the new geom_sf() feature in ggplot2. Importantly, this seems to be a graphics device issue, because the exact same plot takes vastly different amounts of time to render under different devices. We’re talking about 2 seconds vs. 100 seconds here, so not a small effect.
In particular, the quartz device on OS X seems to be particularly slow. It appears to be the case that geom_sf() (which draws complex polygons for maps) hits a code-path in quartz that hasn’t been well optimized for performance. Importantly, on the same machine where rendering a specific map with quartz takes 100 seconds, I can render the map to pdf *and* open the pdf in Preview in about 2 seconds, so there is no fundamental reason why it should take that long with quartz. For discussion and reproducible examples, please see here: https://github.com/tidyverse/ggplot2/issues/2655 https://community.rstudio.com/t/ggplot2-geom-sf-performance/3251 Best wishes, Claus -- Claus Wilke Professor and Department Chair, Integrative Biology The University of Texas at Austin 2500 Speedway, C0930 Austin, Texas 78712 512 232 2459 [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
