18 Questions
What happens when you set arrowEnd to True in a Line function?
Draws an arrow head at the end of the line
What is the purpose of the arrowStart property in a Line function?
Draws a line with an arrow head at the start
What is the difference between the lines drawn by Line(100, 175, 300, 175, arrowStart=True) and Line(100, 175, 300, 175, arrowEnd=True)?
The position of the arrow head
What is the effect of setting both arrowStart and arrowEnd to True in a Line function?
Draws a line with arrow heads at both ends
What is the purpose of the Line function?
To draw a line with optional arrow heads
Which of the following code snippets will draw a line with an arrow head at the start?
Line(100, 175, 300, 175, arrowStart=True)
What is an arc in the context of shapes?
A part of an oval shape
What determines the direction of an arc in a shape?
The startAngle and sweepAngle
What is the unit of measurement for angles in this course?
Degrees
What is the direction of 90 degrees?
To the right
What is the purpose of the first 4 values in the Arc function?
To specify the centerX, centerY, width, and height of the oval
What is the relationship between an arc and an oval?
An arc is part of an oval
What is the most common use of arcs?
To draw a part of a circle
What determines the size of an arc?
The width and height of the arc
What is the purpose of the arrowStart property?
To draw an arrow head at the start of a line
What is the difference between an arc and an arrow?
An arc is a part of a circle, while an arrow is a line with a triangular head
What will draw an arc that looks the same as the arc in the example?
Arc(200, 200, 250, 250, 0, 90, fill='navy')
What do we use to draw an arrow?
A line shape with a triangular head
Study Notes
Arcs and Arrows
Arcs
- An arc is a part of an oval.
- To draw an arc, we specify the oval it is part of, then the start angle and sweep angle.
- The first 4 values in the Arc function specify the centerX, centerY, width, and height of the oval.
- The two additional values specify the startAngle and sweepAngle of the arc.
- Angles are measured in degrees, with 0 degrees heading straight up, and increasing clockwise.
- To make an arc that is part of a circle, we set both its width and height to the diameter of the circle (twice its radius).
Arrows
- An arrow is a line with a triangular arrow head at one or both ends.
- We use a line and set the arrowStart property to True to draw an arrow head at the start of the line.
- We set arrowEnd to True to draw an arrow head at the end of the line.
- We can set both arrowStart and arrowEnd to True to draw an arrow head at both ends of the line.
Examples
- The code
Line(100, 175, 300, 175, arrowStart=True)draws a line with an arrow head at the start. - The code
Line(100, 175, 300, 175, arrowEnd=True)draws a line with an arrow head at the end. - The code
Arc(200, 200, 400, 150, 0, 90, fill='navy')draws an arc that is part of an oval.
Learn how to draw lines with arrows in Matplotlib. This quiz covers the usage of arrowStart and arrowEnd parameters to customize line plots. Test your understanding of Matplotlib's line drawing features.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
