我能够正确地显示热图
// Create a heat map tile provider, passing it the latlngs of the police stations.
mProvider = new HeatmapTileProvider.Builder()
.data(list)
.build();
// Add a tile overlay to the map, using the heat map tile provider.
mOverlay = mMap.addTileOverlay(new TileOve
给定一个有两列的csv文件,我想绘制条形图,以显示使用iPhone,mac,ipad和android发布的推文数量,按降序使用R。设备名称嵌入文本问题删除文本和绘制条形图。
data <- structure(list(Device = structure(c(1L, 1L, 2L,
3L, 4L, 5L), .Label = c("Twitter for iphone", "Twitter for android", "Twitter for mac", "Twitter for android",