ggmap() usage returning an error and not a plot

[gavinsimpson]

In the code block

bc.map <- get_map(location = c(-120, 60), zoom = 4)

ggmap(bc.map) +
  geom_point(data = all.sites, aes(x = long, y = lat)) +
  geom_point(data = get_site(dataset = all.datasets), 
             aes(x = long, y = lat), 
             color = 2) +
  xlab('Longitude West') + ylab('Latitude North')

I am seeing the following behaviour:

> bc.map <- get_map(location = c(-120, 60), zoom = 4)
Map from URL : http://maps.googleapis.com/maps/api/staticmap?center=60,-120&zoom=4&size=%20640x640&scale=%202&maptype=terrain&sensor=false
Google Maps API Terms of Service : http://developers.google.com/maps/terms
> 
> ggmap(bc.map) +
+   geom_point(data = all.sites, aes(x = long, y = lat)) +
+   geom_point(data = get_site(dataset = all.datasets), 
+              aes(x = long, y = lat), 
+              color = 2) +
+   xlab('Longitude West') + ylab('Latitude North')
Error: Request-URI Too Long

This is with

> sessionInfo()
R version 3.1.0 Patched (2014-05-26 r65771)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=en_CA.utf8       LC_NUMERIC=C             
 [3] LC_TIME=en_CA.utf8        LC_COLLATE=en_CA.utf8    
 [5] LC_MONETARY=en_CA.utf8    LC_MESSAGES=en_CA.utf8   
 [7] LC_PAPER=en_CA.utf8       LC_NAME=C                
 [9] LC_ADDRESS=C              LC_TELEPHONE=C           
[11] LC_MEASUREMENT=en_CA.utf8 LC_IDENTIFICATION=C      

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

other attached packages:
 [1] mapproj_1.2-2   maps_2.3-7      gridExtra_0.9.1 Bchron_4.1.1   
 [5] inline_0.3.13   plyr_1.8.1      reshape2_1.4    ggmap_2.3      
 [9] ggplot2_1.0.0   neotoma_1.0-1   devtools_1.5   

loaded via a namespace (and not attached):
 [1] coda_0.16-1         colorspace_1.2-4    digest_0.6.4       
 [4] ellipse_0.3-8       evaluate_0.5.5      gtable_0.1.2       
 [7] hdrcde_3.1          httr_0.4            lattice_0.20-29    
[10] MASS_7.3-33         mclust_4.3          memoise_0.2.1      
[13] munsell_0.4.2       parallel_3.1.0      png_0.1-7          
[16] proto_0.3-10        Rcpp_0.11.2         RCurl_1.95-4.3     
[19] RgoogleMaps_1.2.0.6 rjson_0.2.14        RJSONIO_1.3-0      
[22] scales_0.2.4        stringr_0.6.2       tools_3.1.0        
[25] whisker_0.3-2

[SimonGoring]

Yes this is new behavior, since I last compiled it anyway. I've tried tracking down the error but don't seem to be coming up with anything. I think I'm just going to drop the maps anyway, since it's probably easier in publication to use free maps.

[SimonGoring]

The source of the problem wasn't in ggmap but in the get_site call. The function hadn't been fixed yet to pull sites out of dataset objects. This is fixed in https://github.com/ropensci/neotoma/commit/aa5a01dc36537c79d2c9bb4d07b63500ab45c4e8 but I changed to the ggmap world map anyway.