最近迷上了动态可视化，突然发现shiny真是个好东西，能够将我之前所学都完美的结合在一起，形成一个集成的动态仪表盘！
今天做一个小小的案例，算是shiny动态可视化的小开端……
这个案例是之前发过的中国人口结构动态金字塔图，这个图还是蛮不错，数据取自UN的官网，非常有现实意义的人口性别结构数据。
library(ggplot2)
library(animation)
library(dplyr)
library(tidyr)
library(xlsx)
library(ggthemes)
library(shiny)
library(shinythemes)
做简单的数据清洗工作，为shiny提供可用的数据源：
setwd("D:/R/File")
windowsFonts(myfont=windowsFont("微软雅黑"))
female
male
female%gather(Year,Poputation,-1)
male%gather(Year,Poputation,-1)
female$Poputation
male$sex
China_Population%mutate(abs_pop=abs(Poputation))
China_Population$agegroup
levels=c("0-4","5-9","10-14","15-19","20-24","25-29","30-34","35-39","40-44","45-49","50-54","55-59","60-64","65-69","70-74","75-79","80+") ,order=T)
China_Population_dd
定制shinyapp的ui：
ui
theme=shinytheme("cerulean"),
titlePanel("Population Structure Data"),
sidebarLayout(
sidebarPanel(
selectInput("var1", "x-axis",c("agegroup"="agegroup","Poputation"="Poputation","sex"="sex"),selected="agegroup"),
selectInput("var2", "y-axis",c("agegroup"="agegroup","Poputation"="Poputation","sex"="sex"),selected="Poputation"),
selectInput("var3", "Gender",c("agegroup"="agegroup","Poputation"="Poputation","sex"="sex"),selected="sex"),
selectInput("theme", "Choose a ShinyTheme:",choices ("cerulean","cosmo","cyborg","darkly","flatly","journal","lumen","paper",
"readable","sandstone","simplex","slate","spacelab","superhero","united","yeti")),
sliderInput("var4","Year",min=1950,max=2015,value=5,step=5)
),
mainPanel(h2('Dynamic pyramid of population structure in China'),plotOutput("distPlot"))
)
))
定制shiny的输出服务端：
server
output$distPlot
mydata=filter(China_Population,Year==input$var4)
argu1
argu2
argu3
ggplot(data=mydata,aes(x=argu1,y=argu2,fill=argu3))+
coord_fixed()+
coord_flip() +
geom_bar(stat="identity",width=1) +
scale_y_continuous(breaks = seq(-70000,70000,length=9),
labels = paste0(as.character(c(abs(seq(-70,70,length=9)))), "m"),
limits = c(-75000,75000)) +
theme_economist(base_size=14)+
scale_fill_manual(values=c('#D40225','#374F8F')) +
labs(title=paste0("Population structure of China:",input$var4),
caption="Data Source:United Nations Department of Economic and Docial Affairs
Population Division
World Population Prospects,the 2015 Revision"
,y="Population",x="Age") +
guides(fill=guide_legend(reverse=TRUE))+
theme(
text=element_text(family="myfont"),
legend.position =c(0.8,0.9),
legend.title = element_blank(),
plot.title = element_text(size=20),
plot.caption = element_text(size=12,hjust=0)
)
})
})
运行app：
shinyApp(ui=ui,server=server)
动态视频展示：
此外，shiny的两个组成部件：
ui.R和server.R我已经打包成文件夹了，里面有需要的数据集文件，有执行app的gobal文件，如需可在魔方学院群共享文件中下载：
在线查看可以点击这里:(使用PC端查看体验更佳)：
动态人口结构金字塔：
https://ljtyduyu.shinyapps.io/shinyapp/
欢迎关注魔方学院QQ群
