Geom_dl

Please briefly describe your problem and what output you expect. If you have a question, please don't use this form, but instead ask on the community forum http://community.plot.ly/c/api/r or stackoverflow http://stackoverflow.com.

Please include a minimal reprex. The goal of a reprex is to make it as easy as possible for me to recreate your problem so that I can fix it. If you've never heard of a reprex before, start by reading https://github.com/tidyverse/reprex#readme, and follow the advice further down the page. Do NOT include session info unless it's explicitly asked for, or you've used reprex::reprex(..., si = TRUE) to hide it away.

Delete these instructions once you have read them.

Brief description of the problem

# insert reprex here

该 issue 仅包含 R issue 模板，没有问题描述、文件、测试或可复现示例。首先按照链接的 reprex 指南操作，并提供缺失的预期输出；在报告完成之前，无法确定入口点和完成检查。