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Update 图11-10-1 点状地图.R
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第11章 地理空间型图表/图11-10-1 点状地图.R

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#EasyCharts团队出品,
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#如需使用与深入学习,请联系微信:EasyCharts
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#EasyShu团队出品,更多文章请关注微信公众号【EasyShu】
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#如有问题修正与深入学习,可联系微信:EasyCharts
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library(rgdal) #提供readOGR()函数
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library(rgdal) #提供readOGR()函数
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library(ggplot2)
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library(dplyr)
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library(RColorBrewer)
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df_freq<-rbind(df_freq,cbind(mypolys[[i]]@coords,mypolys[[i]]@data))
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}
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#(a) 离散点状地图
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#(a) 离散点状地图
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ggplot() +
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#geom_circle(data=df_freq,aes(x0=long,y0=lat,fill=value,r=bins/2),size=0.1)+
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#geom_polygon(data=df_map, aes(x=long, y=lat, group=group),fill='white',alpha=0.9,color=NA,size=1)+
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geom_point(data=df_freq,aes(x=long,y=lat),fill='black',size=2,shape=21,stroke=0.1)+
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geom_path(data=df_map, aes(x=long, y=lat, group=group),colour="black",size=1)
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#(b) 统计直方的点状地图
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#(b) 统计直方的点状地图
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ggplot() +
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#geom_circle(data=df_freq,aes(x0=long,y0=lat,fill=value,r=bins/2),size=0.1)+
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geom_point(data=df_freq,aes(x=long,y=lat,fill=value),size=3,shape=21,stroke=0.1)+
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scale_fill_gradientn(colours=colormap)#+
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#coord_fixed()
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#geom_path(data=df_map, aes(x=long, y=lat, group=group),colour="black",size=0.25)+
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#geom_path(data=df_map, aes(x=long, y=lat, group=group),colour="black",size=0.25)+

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