ggmap

问题 Created a choropleth using ggplot2. Here's the ggplot code okc <- ggplot() + geom_polygon(data = mapdata, aes(x = long, y = lat, group = group, fill = B19013_001), color = "black", size = 0.5)+ scale_fill_distiller(palette = "Reds", labels = comma, breaks = pretty_breaks(n = 10), values = c(1,0)) + guides(fill = guide_legend(reverse = TRUE)) + theme_nothing(legend = TRUE) + ggtitle('Map of 40109') Here's a sample of the data from mapdata: long lat order hole piece group id 1 -97.54285 35

问题 I am trying to use GGmap to create a plot of vehicle car crashes by state. The map will have dots which are sized based on the number of car crashes in the state. In particular I am trying to recreate the usa-plot shown in the visualizing clusters section of this blog post. However, whenever I try to create the map I get this error. Error in aperm.default(map, c(2, 1, 3)) : invalid first argument, must be an array I have setup the Google API and see that it is recieving hits. I have also

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . I'm currently using Rselenium to input doctors' names into Google Maps, and then collect the addresses associated with those names. For example, if I input "Susan Marra" my current program would return "11782 Sand Point Way NE, Seattle, WA 98125", the address of her practice. This worked fine originally, but the

问题 I am trying to place some plots on a map but nothing appears on the map. Here is a reproducible example. The first plot shows how each subplot should look. The second excludes the map but the subplot sizes are too large. The last is one attempt at the final product. I have tried many permutations but this has me stuck. Thanks in advance. library(ggplot2) library(ggmap) library(ggsubplot) pDat <- structure(list(Location = structure(c(13L, 12L, 14L, 14L, 15L, 15L, 16L, 16L, 17L, 17L, 18L, 19L,

问题 In my previous question, I presented that I have a table of "posts" with IPs, and that I wanted to geolocate them. Geolocating a large number of posts based on IP Addresses. (880,000 rows) The answer demonstrated how to use rgeolocate to achieve this, and after some effort in learning R I have managed to accomplish the same result: library(iptools) library(rgeolocate) library(tidyverse) library(readxl) library(rworldmap) library(ggmap) library(rworldxtra) post <- read_excel("filepath/post

问题 I have a map of the USA, ready to go: mygggmap <- get_map(location = "United States", zoom = 4) g <- ggmap(myggmap) The next step is to plot some major cities. I understand I can create a layer to plot my major cities by their longitude and latitude, something like: g <- g + geom_density2d(data = citydata, aes(x = lon, y = lat)) but I am wondering if there is a way to plot by the actual name, city and state? Since ggmap is layered over the Google Map API, this should be possible, correct? 回答1

问题 I have an app where the user can provide a specific address and the app returns the geocode which is later used to subset the data. The snippet of the code is as simple as: library(ggmap) geocode("2020 walnut street pa") This works perfectly when I run it on my local machine. I get the below output: Information from URL : http://maps.googleapis.com/maps/api/geocode/json?address=2020%20walnut%20street%20pa&sensor=false lon lat 1 -75.17508 39.95034 However when I run this same code on the shiny

问题 When I run the code from the accepted answer (Plot coordinates on map), I get the following error message on the first run after installing ggmap: # loading the required packages library(ggplot2) library(ggmap) # creating a sample data.frame with your lat/lon points lon <- c(-38.31,-35.5) lat <- c(40.96, 37.5) df <- as.data.frame(cbind(lon,lat)) # getting the map mapgilbert <- get_map(location = c(lon = mean(df$lon), lat = mean(df$lat)), zoom = 4, maptype = "satellite", scale = 2) # plotting

问题 I want to have a map presenting value distribution over the area with some scale. Here is my data frame: head(trip) TIP LON LAT 1 1.318878 -73.9932 40.7223 2 1.370667 -73.9932 40.7222 3 0.933232 -73.9772 40.7559 4 1.268699 -73.9932 40.7628 5 1.265304 -73.9932 40.7429 6 1.193437 -73.9852 40.7447 I have generated a map using following code: map <- ggmap::get_map("new york", zoom = 11) nyc_map <- ggmap::ggmap(map, legend="topleft") That map is properly displayed. I have also generated a layer

问题 I'm working with the ggmap package in R and I am relatively new to geospatial data visualizations. I have a data frame of eleven latitude and longitude pairs that I would like to plot on a map, each with a label. Here is the dummy data: lat<- c(47.597157,47.656322,47.685928,47.752365,47.689297,47.628128,47.627071,47.586349,47.512684,47.571232,47.562283) lon<-c(-122.312187,-122.318039,-122.31472,-122.345345,-122.377045,-122.370117,-122.368462,-122.331734,-122.294395,-122.33606,-122.379745)