I would like to add the legend for these 3 portfolios, but it doesn't work. A bubblechart is a scatterplot with a third variable. It can be used to compare one continuous and one categorical variable, or two categorical variables, but a variation like geomjitter(), geomcount(), or geombin2d() is usually more appropriate. The scatterplot is most useful for displaying the relationship between two continuous variables. That is, I have a scatter plot of many stocks portfolios in the Volatility - Return chart, with the 3 optimized portfolios highlighted. The point geom is used to create scatterplots. Legend("bottom",c(Portfolio_1,Portfolio_2,Portfolio_3),cex=.8,col=c("red","blue","green"),pch=c(1,2,3))Ĭhart + expand_limits(x=0, y=0) + scale_y_continuous(labels = percent) + scale_x_continuous(labels = percent) If we want to add a legend to our ggplot2 plot, we need to specify the colors within the aes function (i.e. Geom_point(data=Portfolio_3, aes(x = Portfolio_Volatility, y = Portfolio_Yield ), color = 'green',size=2) + Example 1: Create Legend in ggplot2 Plot. Geom_point(data=Portfolio_2, aes(x = Portfolio_Volatility, y = Portfolio_Yield ), color = 'blue',size=2) + Duplicated legends in ggplot2 for colour and point shape. I have the following plot: The code I used to generate this plot was: ggplot(df, aes(x instance, y totalhits))+ geompoint(size 1)+ geomline()+ geomline(aes(xdfinstance, y line1), co. How to add new legends to complicated scatter plot using ggplot2. Since you havent provided reproducible example, I had to make it up. The solution is to tidy your data before plotting it. This confuses ggplot which uses all shapes at once in legend. Have a look at the following R syntax: ggplot ( data, aes ( x, y, col group)) + ggplot with legend geompoint () Figure 2: ggplot2 Plot with Legend. Geom_point(data=Portfolio_1, aes(x = Portfolio_Volatility, y = Portfolio_Yield ), color = 'red',size=2) + Scatter plot in ggplot2 with triple legend. Apparently, the problem is that you are putting three geompoint layers on top of each other. Example 1: Create Legend in ggplot2 Plot If we want to add a legend to our ggplot2 plot, we need to specify the colors within the aes function (i.e. The following example shows how to use this syntax in practice. I have tried with the following code but it is not working: # built scatter plotĬhart = ggplot( Combination_of_certificates, aes( x = Portfolio_Volatility, y = Portfolio_Yield ) ) + By creating a separate data frame that only contains the value for the y-intercept of the horizontal line, we’re able to add the horizontal line to the plot and automatically add it to the legend as well. I would like to add the legend to a scatter plot of mine.
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