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library(ggplot2)library(RColorBrewer)
Looking at the data, I’ll make my graph with magnitude and temperature.
head(stars)
star magnitude temp type
1 Sun 4.8 5840 G
2 SiriusA 1.4 9620 A
3 Canopus -3.1 7400 F
4 Arcturus -0.4 4590 K
5 AlphaCentauriA 4.3 5840 G
6 Vega 0.5 9900 A
GGPlot Graph
I made the ggplot graph for the stars data frame.
stars_chart <-ggplot(stars, aes(x = magnitude, y = temp, color = type)) +geom_point(size =2.5, alpha =0.6) +labs(x ="Magnitude",y ="Temperature (in Kelvins)",title="Comparison of Magnitude and Temperature by Star Type",caption ="Source: dslabs",color ="Star Type") +theme_bw() +scale_color_brewer(palette ="Spectral") stars_chart
I decided to use the stars dataset from dslabs to create my ggplot graph. I created my ggplot graph with geom_point to show the relationship with magnitude and temperature well, then I made sure to color the points based on star type to show what types have higher magnitude or temperature. Something I noticed in my graph is that stars that are type M have higher magnitude, but lower temperature, however stars type B have high higher temperatures but lower magnitude. The star type with the highest temperature is type O with above 30,000 kelvins, the lowest is type M with less than 5,000 kelvins.
