Scale_colour_manual legend title

scale_fill_manual(legend_title,values=c("orange","red")). Source: stackoverflow.com. change color legend title ggplot2. how to set the name of legend in ggplot. scale_ colour_ manual( ) and scale_ fill_ manual( ) also have an optional aesthetics argument that can be used to define both colour and r ggplot add size in theme( ). the title of the legend can be easily changed, as it is the first argument of the scale_ color_ manual( ) function. example 1: create I know an identical question has been asked earlier. ggplot legend - scale_colour_manual not workingBut the question involves a somewhat complicated dataset than what I have here and the answer. The problem: when using scale_colour_manual in ggplot2, the legend is not showing. How to specify manual color scale in ggplot2 of R. Travel. Details: Your gradient is already set with #FF0000 as the minimum. ggplot2: multiple legends for the same aesthetic. Travel. Details: The title of the legend can be easily changed, as it is the first argument of the scale_color_manual() function. The functions scale_colour_manual(), scale_fill_manual(), scale_size_manual(), etc. work on the aesthetics specified in the scale name: colour, fill Details: We can also use the scale_fill_manual() function to simultaneously specify a legend title and a vector of color values to use: library (ggplot2) Figure 10.13: Manually specified legend labels with the default discrete scale (left); Manually specified labels with a different scale (right). If you are also changing the order of items in the legend, the labels are matched to the items by position. In this example we'll change the item order, and make In the sample on this page the Geo Chart shows the country colors to be using a scale based on popularity. Yet my own map shows all countries with same dark color regardless of the value of the popularity field. A legend is added to the chart automatically when the color , shape or size arguments One simple example is giving the legend a title . import altair as alt from vega_datasets import data. The Scale class passed to the scale argument provides a number of options for customizing the color scale; we What I want to do is manually adjust the legend text to reflect the names and the colors/geom for each layer (layer4&5 can be one reference). When I to do this the legend for the geom_lines all come back as red. The other issue is that I want to rename the gradient scale Change colors manually. A custom color palettes can be specified using the functions : scale_fill_manual() for box plot, bar plot, violin plot, etc. Note that, the argument breaks can be used to control the appearance of the legend. This holds true also for the other scale_xx() functions. my_ggplot + scale_color_discrete(name = "My Legend Title No. 1") # Manual legend title. Note: We used the function scale_color_discrete, because our legend is created based on the color specification of our graphic.