Line colors and width in Matplotlib - Cheat Sheet & Quick Revision

Recall & Review

beginner

How do you change the color of a line in matplotlib?

You can change the line color by using the color parameter in the plot() function. For example, plt.plot(x, y, color='red') draws a red line.

beginner

What parameter controls the thickness of a line in matplotlib?

The linewidth (or lw) parameter controls the thickness of the line. For example, plt.plot(x, y, linewidth=3) makes the line thicker.

beginner

Can you use color names and hex codes to set line colors in matplotlib?

Yes! You can use named colors like 'blue', 'green', or hex color codes like '#FF5733' to set line colors.

beginner

What is the default line width in matplotlib if you don't specify it?

The default line width is 1.5, which is a thin line.

intermediate

How do you set multiple lines with different colors and widths in one plot?

Call plt.plot() multiple times with different color and linewidth values for each line. For example:<br>plt.plot(x, y1, color='red', linewidth=2)<br>plt.plot(x, y2, color='blue', linewidth=4)

Which parameter changes the line thickness in matplotlib?

A linewidth

B color

C linestyle

D marker

The linewidth parameter controls how thick the line appears.

How would you make a green line in matplotlib?

A plt.plot(x, y, linestyle='green')

B plt.plot(x, y, color='green')

C plt.plot(x, y, linewidth='green')

D plt.plot(x, y, marker='green')

The color parameter sets the line color.

What is the default line width if you don't specify it?

A 2.0

B 0.5

C 1.5

D 3.0

Matplotlib uses a default line width of 1.5.

Which of these is a valid way to specify a color in matplotlib?

A '#00FF00'

B 'thick'

C 'dashed'

D 'circle'

Hex color codes like '#00FF00' are valid color specifications.

How do you plot two lines with different colors and widths?

A Use plt.color() and plt.width() functions

B Use one plt.plot() with multiple colors in one string

C Set color and linewidth after plotting

D Call plt.plot() twice with different color and linewidth values

You plot each line separately with its own color and linewidth.

Explain how to change the color and thickness of a line in matplotlib.

Think about the parameters inside plt.plot()

Describe how to plot multiple lines with different colors and widths on the same graph.

Each line needs its own plot call with settings