Adding labels and legends

Introduction to Data Science in Python

Hillary Green-Lerman

Lead Data Scientist, Looker

What did we just plot?

from matplotlib import pyplot as plt

plt.plot(ransom.letter,
         ransom.frequency)

plt.show()

Axes and title labels

plt.xlabel("Letter")

plt.ylabel("Frequency")

plt.title("Ransom Note Letters")

Labels anywhere before plt.show()

Legends

plt.plot(aditya.days,
         aditya.cases,
         label="Aditya")
plt.plot(deshaun.days,
         deshaun.cases,
         label="Deshaun")
plt.plot(mengfei.days,
         mengfei.cases,
         label="Mengfei")

plt.legend()

Arbitrary text

plt.text(xcoord,
    ycoord,
    "Text Message")

plt.text(5,
    9,
    "Unusually low H frequency!")

Modifying text

Change font size
```
plt.title("Plot title", fontsize=20)
```
Change font color
```
plt.legend(color="green")
```

https://en.wikipedia.org/wiki/Web_colors

Let's practice!

Introduction to Data Science in Python