将layerId添加到addPolygons（）时，多边形不会显示

Question

我有一个多边形，我可以使用addPolygons完美地添加到传单，但我试图给它一个layerId，所以我可以在以后删除它。我不能使用clearShape（）因为我有超过1层。所以我想使用removeShape（layerId）。但是当我将layerId添加到addPolygon时，它不再显示多边形。我的脚本的相关部分是：

 colorData <- region2@data[, "contP"]
 colorData[colorData == 0] <- NA
 pal <- colorNumeric(c("lightblue1", "steelblue3", "blue", "green","green3","green4",
                    "yellow","gold","darkorange","red","red2","red4","magenta","purple1"), c(0,30),
                  na.color = "transparent")
 leafletProxy("map") %>%
 # removeImage("colorRaster") %>%
 #  removeShape("colorLegend") %>%
  addPolygons(data=region2, weight = 1, color = "black", fillColor = pal(colorData), fillOpacity = 0.5, layerId="colorLegend2") %>%
 addLegend("bottomleft", pal=pal, values=c(0,30), title="Mean P", layerId="colorLegend")

有关为何会发生这种情况的任何提示？