R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

Including Plots

You can also embed plots, for example:

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.

library(leaflet) library(dplyr)

#############실력 향상 문제###############

1. 데이터 생성 (

travel_data <- data.frame( city = c(“베를린”, “암스테르담”, “브뤼셀”, “파리”, “취리히”), lat = c(52.5200, 52.3676, 50.8503, 48.8566, 47.3769), lon = c(13.4050, 4.9041, 4.3517, 2.3522, 8.5417), day = c(1, 3, 2, 15, 10) )

2. 지도 생성 및 시각화

map <- leaflet(travel_data) %>% addProviderTiles(providers$CartoDB.DarkMatter) %>% setView(lng = 8.5, lat = 50.0, zoom = 4) %>% addCircles(lng = ~lon, lat = ~lat, radius = ~day * 3000, color = “yellow”, fillOpacity = 0.5) %>% addPolylines(lng = ~lon, lat = ~lat, color = “yellow”, weight = 2) %>% addMiniMap(width = 150, height = 150)

지도 출력

map