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POHow to use R to build bubble charts with gradient fills
 

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  1. POHow to use R to build bubble charts with gradient fills
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    <p>I use R code below to build bubble chart.</p> <pre><code>pdf(file='myfigure.pdf',height=10,width=13) y&lt;-c(123,92,104,23,17,89,13) x&lt;-c(11,45,24,50,18,7,2) size&lt;-c(1236,1067,1176,610,539,864,1026) radius&lt;-sqrt(size/pi) col&lt;-c(2,2,3,4,5,5,6) name&lt;-c("Acura", "Alfa Romeo","AM General","Aston Martin Lagonda","Audi","BMW","Bugatti") symbols(x,y, circles=radius,fg="white",bg=col,ylim=c(-20,140)) text(x, y, name, cex=1.5,font=4) dev.off() </code></pre> <p><img src="https://i.stack.imgur.com/x9OLf.png" alt="enter image description here"> But I want the bubbles with 3d surface, say gradient fills and shadow. like the chart below. <img src="https://i.stack.imgur.com/Gs9YB.png" alt="enter image description here"></p> <p>Anyone knows how to use R to release it? Thanks!</p> <p>Thanks for all the suggestions.While finally I tried a silly way by drawing multiple circles from dark to light to make it gradient filled. Any suggestions to make it better? Thanks! <img src="https://i.stack.imgur.com/qRPjK.png" alt="enter image description here"></p> <pre><code>makeTransparent&lt;-function(someColor, alpha) { newColor&lt;-col2rgb(someColor) apply(newColor, 2, function(curcoldata){rgb(red=curcoldata[1], green=curcoldata[2], blue=curcoldata[3],alpha=alpha,maxColorValue=255)}) } pdf(file='myfigure.pdf',height=10,width=13) y&lt;-c(123,92,104,23,17,89,13) x&lt;-c(11,45,24,50,18,7,2) size&lt;-c(1236,1067,1176,610,539,864,1026) radius&lt;-sqrt(size/pi) col&lt;-c(2,2,3,4,5,5,6) name&lt;-c("Acura", "Alfa Romeo","AM General","Aston Martin Lagonda","Audi","BMW","Bugatti") x2&lt;-c() y2&lt;-c() circles&lt;-c() bg&lt;-c() fg&lt;-c() num&lt;-30 radius_min&lt;-0.3 alpha_min&lt;-40 alpha_max&lt;-180 for (i in 1:num){ x2&lt;-c(x2,x) y2&lt;-c(y2,y) circles&lt;-c(circles,radius*(radius_min+(i-1)*(1-radius_min)/num)) bg&lt;-c(bg,makeTransparent(col,alpha=alpha_max-(i-1)*(alpha_max-alpha_min)/num)) if(i!=num){fg&lt;-c(fg,makeTransparent(col,alpha=alpha_max-(i-1)*(alpha_max-alpha_min)/num))}else{fg&lt;-c(fg,rep('white',length(x)))} } symbols(x2,y2,circles=circles,fg=fg,bg=bg) text(x, y, name, cex=1.5,font=4) dev.off() </code></pre>
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    1. COIf you like that kind of effect, R might not be the right tool for you. The graphics capabilities in R were designed + built by people who really dislike that sort of thing, so while it may be possible, I suspect it won't be convenient.
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    2. CO@Joran your point is well taken but it is an interesting query, and though I may never use it would still be interesting to see a solution (for impressing some corporate boss who does like this sort of thing).
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    3. CO@TylerRinker Interesting-ness is a matter of opinion, but I certainly didn't mean to suggest it's a bad question. Just trying the save the OP some time in case a different tool would be more appropriate.
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