R传单包产生空白(灰色)图[Ubuntu 14.04] [英] R leaflet package produces blank (grey) map [Ubuntu 14.04]

问题描述

我尝试了leaflet包doc中的示例代码:

I tried out the examplecode from the leaflet package doc:

devtools::install_github("rstudio/leaflet");library(leaflet)
m <- leaflet() %>%
  addTiles() %>%  # Add default OpenStreetMap map tiles
  addMarkers(lng=174.768, lat=-36.852,
             popup="The birthplace of R")
m  # Print the map

，但是在RStudio Viewer和我的Firefox 38.0中，它仅生成了灰色空白地图.也许这与Ubuntu有关?

but it only produced a grey, blank map in the RStudio Viewer, as well as in my Firefox 38.0. Maybe this has something to do with Ubuntu?

这是我的sessionInfo:

Here my sessionInfo:

> sessionInfo()
R version 3.2.1 (2015-06-18)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 14.04.2 LTS

locale:
[1] LC_CTYPE=de_DE.UTF-8 LC_NUMERIC=C  C_TIME=de_DE.UTF-8   
    C_COLLATE=de_DE.UTF-8     LC_MONETARY=de_DE.UTF-8   
[6] LC_MESSAGES=de_DE.UTF-8    LC_PAPER=de_DE.UTF-8 
 LC_NAME=C  LC_ADDRESS=C     LC_TELEPHONE=C           
[11] LC_MEASUREMENT=de_DE.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] leaflet_1.0.0.9999 rgdal_0.9-2        sp_1.0-17         

loaded via a namespace (and not attached):
[1] Rcpp_0.11.5        magrittr_1.5       devtools_1.7.0
MASS_7.3-41        munsell_0.4.2      colorspace_1.2-6   
lattice_0.20-31   
[8] stringr_0.6.2      httr_0.6.1         plyr_1.8.1  
tools_3.2.1        grid_3.2.1         gtable_0.1.2       
tmltools_0.2.6   [15] yaml_2.1.13        digest_0.6.8        
JSONIO_1.3-0      RColorBrewer_1.1-2 reshape2_1.4.1     
gplot2_1.0.1      htmlwidgets_0.3.2 
[22] bitops_1.0-6       RCurl_1.95-4.5     scales_0.2.5   
proto_0.3-10      

推荐答案

我遇到了同样的问题.

通过在addTiles()中指定urlTemplate参数来为我解决:

Resolved for me by specifying urlTemplate parameter in addTiles():

library(leaflet)
leaflet() %>% 
  addTiles(urlTemplate = 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png')

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