麻煩在R的ggmap軟件包中繪制數據

Question

我是New R用戶，所以不太熟悉該語言。 試圖在英格蘭曼徹斯特地圖上繪制鳥類記錄的位置。 設法用以下代碼創建了地圖

MyMap中<-get_map（C（LON = 53.46388，LAT = -2.294037），變焦= 3，列= “BW”）

已通過gdata從Excel中將電子表格讀取為xlsx文件，其中包含分配給Lon＆Lat的long和lat列。

似乎能夠qplot lon＆lat，但不能作為地圖上的圖層，當我嘗試執行此操作時，出現以下錯誤

錯誤：ggplot2不知道如何處理類列表的數據

我現在已經嘗試了太多的代碼組合，以至於我無法就如何將數據附加到地圖上提供說明性的路線，也無法在線跟隨教程，這是我的xlsx問題嗎文件？

編輯：示例代碼：

 #Here is what Jamie Dunning tried:
require(ggmap)
origin<-c("Worsley,Salford","Elton reservoir","Etherow country park","Blackleach country park","Low Hall,LNR, Wigan","Cheadle royal","Rhodes lodges,Middleton","Persons flash,Wigan","Sale water park","Plattfields","Higher Boarshaw","Clifton country park","Horrocks flash")  

ringing.origins<-geocode(origin) 

map<-c(get_map("Greater Manchester") 

swans.coor<-cbind(ringing.origins$lon,ringing.origins$lat)

我還沒有一個成功繪制它們的例子。

Answer 1

使用plotGoogleMaps的另一種選擇

1-獲取坐標

require(ggmap)

#List places to find GPS coordinates for:
    origin<-c("Worsley,Salford","Elton reservoir","Etherow country park","Elton reservoir","Blackleach country park","Low Hall,LNR, Wigan","Cheadle royal","Rhodes lodges,Middleton","Persons flash,Wigan","Sale water park","Plattfields","Higher Boarshaw","Clifton country park","Horrocks flash")

#Get coordinates via geocode function    
    ringing.origins<-geocode(origin)

#Put these coordinates in a data frame for creating an SP object later 
    df <- as.data.frame(origin)
    row.names(df) <- 1:nrow(df)

2-創建空間對象

require(sp)
#Coordinates must be numeric and binded together as one element and rows numbered:
    ringing.origins$lon <- as.numeric(ringing.origins$lon)
    ringing.origins$lat <- as.numeric(ringing.origins$lat)
    coord <- cbind(ringing.origins$lon,ringing.origins$lat)
    row.names(coord) <- 1:nrow(coord)
#Define a mapping projection
    AACRS <- CRS("+proj=longlat +ellps=WGS84")
#Creating a spatial object of "df" using the binded coordinates "coord":
    Map2 <- SpatialPointsDataFrame(coord, df, proj4string = AACRS, match.ID = TRUE) 

3-創建一個交互式的html googlemap：

 require(plotGoogleMaps)
    #Simple Map
    plotGoogleMaps(Map2)
    #Map with some options, filename creates a file in the working directory.
    plotGoogleMaps(Map2, mapTypeId="ROADMAP", colPalette="red", legend=FALSE, filename="Swan_Map.htm")

Answer 2

使用ggmap繪圖

require(ggmap)
#Get your coordinates
origin<-c("Worsley,Salford","Elton reservoir","Etherow country park","Elton reservoir","Blackleach country park","Low Hall,LNR, Wigan","Cheadle royal","Rhodes lodges,Middleton","Persons flash,Wigan","Sale water park","Plattfields","Higher Boarshaw","Clifton country park","Horrocks flash") 
ringing.origins<-geocode(origin) 

#Map of Greater Manchester
map<-get_map("Greater Manchester")
ggmap(map, extent = 'normal') +
  geom_point(aes(x = lon, y = lat), data = ringing.origins)
#Box is too small...

#Bounding box with All points
mymap<-get_map(c(lon=-2.294037,lat=53.46388),zoom=10)
ggmap(mymap, extent = 'device') +
  geom_point(aes(x = lon, y = lat), data = ringing.origins, alpha = 1)