Data-visualization Questions

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qqplot and qqline in loop

I am trying to make a loop for each columns in the database. i am getting this error: must use a vector in [, not an object of class
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Drawing a Square

I am trying to draw a square in r: ggplot() + geom_rect(aes(xmin = 1, xmax = sqrt(pi), ymin = 1, ymax = sqrt(pi)))
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Data visualization on map

I’m working on a vuejs project, i want to make some data visualisation on a map: display a map and show some percentages for each country. i
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