CODEWITHSUNDEEP
rggplot2
mauricio santos
mauricio santos

Reputation: 21

add condition geom_point ggplot2 R

I want to make a chart that matches average temperatures with precipitation, just like what is in this link https://www.r-bloggers.com/part-3a-plotting-with-ggplot2/. Average temperatures are made with geom_violin and precipitation with geom_point. I used my data and I did that chart. The problem is that I do not want the values with 0.0 of precipitation to appear on the chart. Basically what I did was put a condition in the part that refers to the size of the points representing the precipitation, but didn't work. I've tried it in other ways but nothing works.

ggplot(weather,aes(x = month, y = temp)) +
geom_violin(fill = "orange") +
geom_point(aes(size = precipitation >0), colour = "blue", 
position="jitter")+
ggtitle ("Temperature by month") +
xlab("Month") +  ylab ("temperature ( ºC )")

Any help will be appreciated, Thanks

Upvotes: 0

Views: 2670

Answers (1)

kfurlong
kfurlong

Reputation: 323

Without seeing your data and assuming that precipitation is a variable in your data set weather, you could subset your data before plotting it which would remove values under 0 from the plot. 

ggplot(weather, aes(x = month, y = temp)) +
geom_violin(fill = "orange") +
geom_point(data = weather[which(weather$precipitation>0),], 
            aes(size = precipitation >0), colour = "blue", 
position="jitter") +
ggtitle ("Temperature by month") +
xlab("Month") +  
ylab ("temperature ( ºC )")

Upvotes: 1

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