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Basically, the value of accessibility_round can be from >0 to Inf hence i wanna color the point based a on the follow rule.

>0 to 20 - Color1
>20 to 100 - Color2   
>100 to 1000 - Color3   
>1000 to 10000 - Color4 (assume no value larger than 10000 except Inf)
Inf - Color5

I'm kinda new to R new to the usage of tmap and i'm not sure how to go about setting the custom intervals. But this is what I've tried so far.

 tm_shape(schools)+
      tm_symbols(title.col = "Accessibility", style = "fixed",breaks = c(0,20,100,1000,10000,Inf), col="accessibility_round",size = 0.3,
                 palette = "Accent", auto.palette.mapping = FALSE,interval.closure = "right") +
      tm_layout(legend.outside = TRUE, legend.outside.position = "bottom", legend.stack = "horizontal")
root
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1 Answers1

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What exactly doesn't work? This does the job, if I understand you correctly:

data(World)
World$pop_est[World$pop_est>1e9] <- Inf 

tm_shape(World) +
    tm_symbols(col="pop_est",size = 0.3, 
        title.col = "Population", 
        style = "fixed",
        breaks = c(0,1e6,1e7,1e8,1e9,Inf), 
        palette = "Accent",
        auto.palette.mapping = FALSE,
        interval.closure = "right",
        labels = c("0 to 1e6", "1e6 to 1e7", "1e7 to 1e8", "1e8 to 1e9", "Inf")) +
tm_shape(World[which(World$pop_est==Inf),]) +
    tm_text("name") +
tm_layout(legend.outside = TRUE, legend.outside.position = "bottom", legend.stack = "horizontal")
Martijn Tennekes
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