# Density curve of histogram plot in R

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Ref: http://casoilresource.lawr.ucdavis.edu/drupal/book/export/html/23 |

To add density curve on a histogram, like the green curve above, use code below:

#plot the distribution

hist(slope, breaks=1000, freq=F, main=main, xlab=”Slope Value (percent)”, xlim=c(0,150), ylim=c(0,.05) )

lines(density(slope, bw=1), col=”green”)

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