This little gem is often overlooked by newbies but can save you hours of headache when working with maps and geographic data.
So, what does this function do? Well, it sets the coordinates for your turtle screen to a specific range on the x-axis and y-axis. This means that instead of having your map start in the top left corner (which is boring), you can set it up so that when your astronauts reach out from Earth they appear again from another edge!
Here’s how to use it:
1. First, import the turtle module and create a new window for your map.
# Import the turtle module
import turtle
# Create a new window for the map
screen = turtle.Screen() # Create a new screen object using the Screen() function from the turtle module
# Set the starting position of the turtle to the center of the screen
screen.setworldcoordinates(-180,-90,180,90) # Use the setworldcoordinates() function to set the starting position of the turtle to the center of the screen, with the x-axis ranging from -180 to 180 and the y-axis ranging from -90 to 90
# Create a new turtle object
astronaut = turtle.Turtle() # Create a new turtle object using the Turtle() function from the turtle module and assign it to the variable "astronaut"
# Set the shape of the turtle to a circle
astronaut.shape("circle") # Use the shape() function to set the shape of the turtle to a circle
# Set the color of the turtle to blue
astronaut.color("blue") # Use the color() function to set the color of the turtle to blue
# Set the pen size of the turtle to 3
astronaut.pensize(3) # Use the pensize() function to set the pen size of the turtle to 3
# Move the turtle to the starting position
astronaut.penup() # Use the penup() function to lift the pen up, so the turtle can move without drawing
astronaut.goto(0,0) # Use the goto() function to move the turtle to the starting position at (0,0)
# Set the pen back down to start drawing
astronaut.pendown() # Use the pendown() function to put the pen back down, so the turtle can start drawing
# Draw a square with the turtle
for i in range(4): # Use a for loop to repeat the following code 4 times
astronaut.forward(50) # Use the forward() function to move the turtle forward by 50 units
astronaut.left(90) # Use the left() function to turn the turtle left by 90 degrees
# Close the turtle window when clicked
screen.exitonclick() # Use the exitonclick() function to close the turtle window when clicked by the user
2. Next, set up the size of your screen using the setup() function. This will determine how big your map is on the x-axis and y-axis.
# Set up the size of the screen using the setup() function
# This will determine the width and height of the map on the x-axis and y-axis
screen.setup(width=1000, height=600) # The setup() function takes in two arguments, width and height, and sets the size of the screen accordingly. In this case, the width is set to 1000 pixels and the height is set to 600 pixels.
3. Now it’s time to set up the world coordinates using the setworldcoordinates() function. This will determine where your map starts on the x-axis and y-axis. For example:
# Setting up the world coordinates using the setworldcoordinates() function
# This function determines where the map starts on the x-axis and y-axis
# Import the necessary library
import turtle
# Create a screen object
screen = turtle.Screen()
# Set the world coordinates using the setworldcoordinates() function
# The first two parameters (-54, -90) represent the bottom left corner of the map
# The last two parameters (54, 90) represent the top right corner of the map
screen.setworldcoordinates(-54, -90, 54, 90)
This sets up a world coordinate system with (-54, -90) as the bottom left corner (which is in Antarctica), and (54, 90) as the top right corner (which is near Greenland). This means that when your astronauts reach out from Earth they will appear again on the opposite side of the map!
And there you have it a simple but powerful function that can save you hours of headache. So go ahead, embrace the power of setworldcoordinates() and level up your coding game!
Until next time, happy mapping and stay tech-savvy, my friends!