How do I draw a rectangle in matplotlib?

How do I draw a rectangle in matplotlib?

patches module in matplotlib allows us add shapes like rectangle on top of a plot. Let us load patches as mpatches. We can add rectangle by using Rectangle() function in patches module. The Rectangle function takes the location/size of the rectangle you need, left position, bottom location, and width & height.

How do you draw a rectangle in Python?

How to draw a rectangle on an image in Python

1. img = matplotlib. image. imread(“./kite_logo.png”)
2. figure, ax = pyplot. subplots(1)
3. rect = patches. Rectangle((125,100),50,25, edgecolor=’r’, facecolor=”none”)
4. ax. imshow(img) Displays an image.
5. ax. add_patch(rect) Add rectangle to image.

How do you draw a rectangle in cv2?

Python OpenCV | cv2. rectangle() method

1. Parameters:
2. image: It is the image on which rectangle is to be drawn.
3. start_point: It is the starting coordinates of rectangle.
4. end_point: It is the ending coordinates of rectangle.
5. color: It is the color of border line of rectangle to be drawn.

How do I draw a line in matplotlib?

pyplot. vlines() method or matplotlib. pyplot. hlines() method and matplotlib.

How do you draw rectangle?

Steps

1. Draw a straight, horizontal line using a ruler.
2. Make a shorter vertical line coming down from one end of the first line.
3. Draw a horizontal line coming off the bottom end of the vertical line.
4. Draw a vertical line between the ends of the two horizontal lines.
5. Color in your rectangle to make it pop.

How do you draw a rectangle in tkinter?

Tkinter colours The create_rectangle creates a rectangle item on the canvas. The first four parameters are the x and y coordinates of the two bounding points: the top-left and bottom-right points. With the outline parameter we control the colour of the outline of the rectangle.

How do you draw a rectangle on an OpenCV?

1. Drawing Rectangle. To draw a rectangle, you need top-left corner and bottom-right corner of rectangle.
2. Drawing Circle. To draw a circle, you need its center coordinates and radius.
3. Drawing Ellipse. To draw the ellipse, we need to pass several arguments.

Which OpenCV function helps to draw rectangles around detected faces?

We will be using the detectMultiScale function to detect the faces seen in the canvas. And accordingly, when faces are detected, we will draw a colored rectangle around the face.

How do I draw a horizontal line in matplotlib?

Use plt. plot() to plot a horizontal line Call plt. plot(x, y) with x as a sequence of differing x-coordinates and y as a sequence of equal y-coordinates to draw a horizontal line.