如何使用此代码在我的小册子中显示弹出窗口？
leaflet(df) %>%
addTiles() %>%
setView(-119.09, 43.70, zoom = 5) %>%
addCircles(~long, ~lat, popup=df$hrus, color="#ffa500") %>%
addLegend("bottomright", colors= "#ffa500", labels="HRUs", title="P")
我可以看到这些点，但弹出窗口（Inside RStudio视图窗格）中没有显示任何内容。我尝试将其保存为HTML，但保存的页面既没有底图也没有弹出
我该怎么做？
dput（df）
structure(list(lat = structure(c(41.26124, 41.45247, 41.50923,
41.57602, 41.62999, 41.60664, 41.63508, 41.83411, 41.84721, 41.84382,
41.83294, 41.85096, 41.60179, 41.8572, 41.64224, 41.85058, 41.14342,
41.77109, 41.35783, 41.39253, 41.78496, 41.5982, 41.66492, 41.70302,
41.56481, 41.55544, 41.59929, 41.71257, 41.85876, 41.42739, 41.39722,
41.76483, 41.49387, 41.46879, 41.50355, 41.95393, 41.8932, 41.96956,
41.76675, 41.93061, 41.93767, 41.53439, 41.51667, 41.50472, 41.5053,
41.67506, 41.68689, 41.78533, 41.79546, 41.87722), .Dim = 50L),
long = structure(c(-116.21489, -114.91972, -114.74541, -114.72553,
-114.83965, -114.81267, -114.84702, -113.49586, -113.48851,
-113.46151, -113.45017, -113.38449, -114.91356, -113.41496,
-114.85369, -113.50472, -116.21671, -114.25468, -116.32436,
-116.18391, -114.23875, -115.05154, -114.95098, -114.99438,
-115.75044, -115.89944, -115.84581, -114.9099, -114.19781,
-116.59131, -116.53819, -114.07782, -116.38066, -116.4347,
-116.33524, -113.51231, -113.51787, -113.55034, -114.96587,
-113.34303, -113.24616, -116.28699, -116.60549, -116.63497,
-116.55531, -115.19046, -114.72527, -114.64668, -114.54489,
-113.59969), .Dim = 50L), hrus = structure(1:50, .Label = c("1",
"2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
"13", "14", "15", "16", "17", "18", "19", "20", "21", "22",
"23", "24", "25", "26", "27", "28", "29", "30", "31", "32",
"33", "34", "35", "36", "37", "38", "39", "40", "41", "42",
"43", "44", "45", "46", "47", "48", "49", "50"), class = "factor")), .Names = c("lat",
"long", "hrus"), row.names = c(NA, 50L), class = "data.frame")