R中toGeoJSON函数中的“未使用参数”错误

我试图运行这个使用传单包的基本示例，该示例取自传单包文档：

# load example data (Fiji Earthquakes)
data(quakes)

# store data in GeoJSON file (just a subset here)
q.dat <- toGeoJSON(data=quakes[1:99,], dest=tempdir(), name="quakes")

这是我的会话信息：

> sessionInfo()
R version 3.0.2 (2013-09-25)
Platform: i386-w64-mingw32/i386 (32-bit)

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

other attached packages:
 [1] plyr_1.8.1      rMaps_0.1.1     rCharts_0.4.2   base64enc_0.1-2 RCurl_1.95-4.1  bitops_1.0-6    whisker_0.3-2  
 [8] RJSONIO_1.2-0.2 yaml_2.1.13     leafletR_0.2-1  maps_2.3-7      shiny_0.10.0    devtools_1.5   

loaded via a namespace (and not attached):
 [1] caTools_1.17       digest_0.6.4       evaluate_0.5.1     grid_3.0.2         htmltools_0.2.4    httpuv_1.3.0      
 [7] httr_0.3           lattice_0.20-23    memoise_0.2.1      parallel_3.0.2     RColorBrewer_1.0-5 Rcpp_0.11.2       
[13] stringr_0.6.2      tools_3.0.2        xtable_1.7-3      
> args(leafletR::toGeoJSON)
function (data, name, dest, lat.lon, overwrite = TRUE) 
NULL

有人能给我解释一下我的错误在哪里吗

---

谢谢

请发布您的sessionInfo，它对我很有用。如果您发布了argsleafletR:：toGeoJSONI，也会有帮助，谢谢。您可能无意中创建了另一个名为toGeoJSON的对象，请尝试传单r:：toGeoJSONdata=quakes[1:99，]，dest=tempdir，name=quakes。如果这样做行得通，那么rmtoGeoJSON应该去掉这个假的。

> sessionInfo()
R version 3.0.2 (2013-09-25)
Platform: i386-w64-mingw32/i386 (32-bit)

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

other attached packages:
 [1] plyr_1.8.1      rMaps_0.1.1     rCharts_0.4.2   base64enc_0.1-2 RCurl_1.95-4.1  bitops_1.0-6    whisker_0.3-2  
 [8] RJSONIO_1.2-0.2 yaml_2.1.13     leafletR_0.2-1  maps_2.3-7      shiny_0.10.0    devtools_1.5   

loaded via a namespace (and not attached):
 [1] caTools_1.17       digest_0.6.4       evaluate_0.5.1     grid_3.0.2         htmltools_0.2.4    httpuv_1.3.0      
 [7] httr_0.3           lattice_0.20-23    memoise_0.2.1      parallel_3.0.2     RColorBrewer_1.0-5 Rcpp_0.11.2       
[13] stringr_0.6.2      tools_3.0.2        xtable_1.7-3      
> args(leafletR::toGeoJSON)
function (data, name, dest, lat.lon, overwrite = TRUE) 
NULL