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    <p>Here is a solution just using <code>plot()</code>, <code>text()</code>, and <code>arrows()</code>. The <code>for</code> loop is a bit cluttered, but will work for larger data sets and it should be easy to play with the plot and arrows:</p> <pre><code>plot(myd$X,myd$Y, col='white', type="p", main="", ylab="", xlab="", axes = FALSE, ylim = c(min(myd$Y)*.8, max(myd$Y)*1.2), xlim = c(min(myd$X)*.8, max(myd$X)*1.2)) child = data.frame() child = myd[!is.na(myd$Parent1),] DArrows = matrix(0,nrow(child),4); MArrows = matrix(0,nrow(child),4); for (n in 1:nrow(child)){ d&lt;-child[n,]; c1&lt;-myd$indvidual==as.character(d$Parent1); b1&lt;-myd[t(c1)]; c2&lt;-myd$indvidual==as.character(d$Parent2); b2&lt;-myd[t(c2)]; DArrows[n, 1]=as.double(d$X) DArrows[n, 2]=as.double(d$Y) DArrows[n, 3]=as.double(b1[4]) DArrows[n, 4]=as.double(b1[5]) MArrows[n, 1]=as.double(d$X) MArrows[n, 2]=as.double(d$Y) MArrows[n, 3]=as.double(b2[4]) MArrows[n, 4]=as.double(b2[5]) } arrows(DArrows[,3],DArrows[,4],DArrows[,1],DArrows[,2],lwd= 2, col = "blue",length=".1") arrows(MArrows[,3],MArrows[,4],MArrows[,1],MArrows[,2],lwd=2, col = "red",length=".1") par(new=TRUE) plot(myd$X,myd$Y,type = "p", main = "", ylab = "", xlab = "",cex = myd$pchsize, axes = FALSE, pch = 21, ylim = c(min(myd$Y)*.8, max(myd$Y)*1.2), xlim=c(min(myd$X)*.8, max(myd$X)*1.2), bg = myd$fillcol,fg = 'black') text(1.12*myd$X, .85*myd$Y, myd$indvidual) arrows((DArrows[,3]+DArrows[,1])/2, (DArrows[,4]+DArrows[,2])/2, DArrows[,1], DArrows[,2], lwd = 2, col = "blue", length = ".1") arrows((MArrows[,3]+MArrows[,1])/2, (MArrows[,4]+MArrows[,2])/2, MArrows[,1], MArrows[,2], lwd = 2, col = "red", length = ".1") </code></pre> <p><img src="https://i.imgur.com/ZupAW.png" alt="enter image description here"></p>
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    1. POconnecting line like tree in r
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    1. COThe arrow portion is not working for me..should i need some specific package loaded ....
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    2. COI don't think so: `arrows`, like `segments`, `lines`, etc. is in the graphics package, which should be a defailt package (check by `getOption("defaultPackages")` or just load the package. Otherwise you can use `arrows` from the shape library, which may be better because you can modify the arrow more.
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