Numworks: Python Graphics

[Eddie W. Shore]

Numworks Python Scripts: Basic Graphics

Script: atari.py



Draws the basic-eight color palette of the classic 1977 Atari 2600.

Code:

from math import *
from kandinsky import *
# 2020-05-28 atari 2600 colors
# kandinsky module

fill_rect(0,0,320,240,color(245,245,245))

fill_rect(15,15,55,55,color(0,0,0))
fill_rect(85,15,55,55,color(255,0,0))
fill_rect(155,15,55,55,color(255,255,0))
fill_rect(15,85,55,55,color(255,0,255))
fill_rect(155,85,55,55,color(0,255,0))
fill_rect(15,155,55,55,color(0,255,255))
fill_rect(85,155,55,55,color(0,0,255))
fill_rect(155,155,55,55,color(255,255,255))

draw_string("8",107,107)

Script: firstdigit.py



The tenths digit from n random numbers is extracted and a bar chart is generated based on the results. I recommend a sample size of at least 20.

Code:

from math import *
from random import *
from matplotlib.pyplot import *

# set up lists
x=[0,1,2,3,4,5,6,7,8,9]
y=[0,0,0,0,0,0,0,0,0,0]

# user iput
print("EWS 2020-05-29")
print("Bar Chart: First Digit")
print("Recommended at least 20")
n=int(input("n? "))

# generate list
for i in range(n):
  s=int(random()*10)
  y[s]=y[s]+1

# bar plot
h=int(n/2)
d=-int(h/4)
axis([-0.5,9.5,d,h])
bar(x,y)

# turn axis off
axis("off")

# labels at the bottom
# results at top
m=max(y)
for i in range(10):
  text(i-0.25,d+1,str(i))
  text(i-0.25,m+2,str(y[i]))
  
show()

Script: colorfulrings.py



The script cycles through a set of nine colors, four times. The Kandinsky module is used to generate the flowery circles as well as cycle through the colors. This module works with integer pixels.

Code:

from math import *
from kandinsky import *
from time import *

# color lists
r=[255,255,255,0,0,0,51,128,255]
g=[0,102,255,128,255,0,102,128,255]
b=[0,0,0,0,0,255,255,128,255]

# angles
a=list(range(128))
for i in range(128):
  a[i]=i/128*2*pi

# draw circles
for k in range(36):
  n=int(fmod(k,9))
  for j in range(50):
    for i in range(128):
      x=int(160+(20+j)*cos(a[i]))
      y=int(120+(20+j)*sin(a[i]))
      set_pixel(x,y,color(r[n],g[n],b[n]))
  sleep(0.1)

Script: modulusplot.py



Generate a pixel plot of the equation (x^n + y^n) mod m

Code:

from math import *
from kandinsky import *
print("EWS 2020-05-28")
print("x**n + y**n mod m")
n=float(input("power? "))
m=float(input("modulus? "))

for x in range(320):
  for y in range(240):
    t=fmod(pow(x,n)+pow(y,n),m)  
    c=floor(t/m*255)
    set_pixel(x+1,y+1,color(c,c,c))

Blog link: http://edspi31415.blogspot.com/2020/06/n...phics.html