Sample Programs
Use the following Sample Programs to become familiar with methods from the Reference section. These samples also contain several TI-Innovator™ Hub and
TI-Innovator Rover™ programs to help you get started with TI-Python.
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COLORLIN
import ti_plotlib as plt
plt.cls()
plt.window(-10,10,-10,10)
plt.axes("on")
plt.grid(1,1,"dot")
plt.title("TITLE")
plt.pen("medium","solid")
plt.color(28,242,221)
plt.pen("medium","dash")
plt.line(-5,5,5,-5,"")
plt.color(224,54,243)
plt.line(-5,-5,5,5,"")
plt.show_plot()
Press ‘ to display the Shell prompt
REGEQ1
First, enter two lists in the CE OS. Then, for example, calculate [stat] CALC 4:LinReg(ax+b) for your lists. This stores the regression equation to RegEQ in the OS. Here is a program to recall RegEQ to the Python experience.
# Example of recall_RegEQ()
from ti_system import *
reg=recall_RegEQ()
print(reg)
x=float(input("Input x = "))
print("RegEQ(x) = ",eval(reg))
LINREGR (Provided in CE Bundle)
import ti_plotlib as plt
# current intensity
I = [0.0, 0.9, 2.1, 3.1, 3.9, 5.0, 6.0, 7.1, 8.0, 9.2, 9.9, 11.0,11.9]
# voltage
for n in range (len(I)):
I[n] /= 1000
# la tension
U = [0, 1, 2, 3.2, 4, 4.9, 5.8, 7, 8.1, 9.1, 10, 11.2, 12]
plt.cls()
plt.auto_window(I,U)
plt.pen("thin","solid")
plt.axes("on")
plt.grid(.002,2,"dot")
plt.title("Ohm's Law")
plt.color (0,0,255)
plt.labels("I","U",11,2)
plt.scatter(I,U,"x")
plt.color (255,0,0)
plt.pen("thin","dash")
plt.lin_reg(I,U,"center",2)
plt.show_plot()
plt.cls()
a=plt.a
b=plt.b
print ("a =",round(plt.a,2))
print ("b =",round(plt.b,2))
Press ‘ to display the Shell prompt
GRAPH (Provided in CE Bundle)
import ti_plotlib as plt
#After running the program, press [clear] to clear plot and return to Shell.
def f(x):
••return 3*x**2-.4
def g(x):
••return -f(x)
def plot(res,xmin,xmax):
••#setup plotting area
••plt.window(xmin,xmax,xmin/1.5,xmax/1.5)
••plt.cls()
••gscale=5
••plt.grid((plt.xmax-plt.xmin)/gscale*(3/4),(plt.ymax-plt.ymin)/gscale,"dash")
••plt.pen("thin","solid")
••plt.color(0,0,0)
••plt.axes("on")
••plt.labels("abscisse"," ordonnee",6,1)
••plt.pen("medium","solid")
# plot f(x) and g(x)
dX=(plt.xmax -plt.xmin)/res
x=plt.xmin
x0=x
••for i in range(res):
••••plt.color(255,0,0)
••••plt.line(x0,f(x0),x,f(x),"")
••••plt.color(0,0,255)
••••plt.plot(x,g(x),"o")
••••x0=x
••••x+=dX
••plt.show_plot()
#plot(resolution,xmin,xmax)
plot(30,-1,1)
# Create a graph with parameters(resolution,xmin,xmax)
# After clearing the first graph, press the [var] key. The plot() function allows you to change the display settings (resolution,xmin,xmax).
Press ‘ to display the Shell prompt
DASH1 – Sample TI-Innovator™ Hub Program
See: [Fns…]>Modul: ti_hub module
from ti_system import *
import brightns
import ti_plotlib as plt
from time import *
plt.cls()
plt.color(0,0,255)
plt.text_at(2,"Monitoring Hub","center")
plt.text_at(3,"Brightness Sensor","center")
plt.color(255,0,0)
plt.text_at(12,"Press [clear] to quit ","right")
t0=monotonic()
plt.color(0,0,0)
while not escape():
••I=brightns.measurement()
••I=round(I,1)
••tf=monotonic()
••plt.color(0,0,0)
••tm=round(tf-t0,1)
••msg="Time = %.1f sec" % tm
••plt.text_at(6,msg,"center")
••msg="Brightness = %.1f %%" %I
••plt.text_at(7,msg,"center")
••sleep(1)
ROVER – Sample TI-Innovator™ Rover program
See: [Fns…]>Modul ti_rover module
from ti_system import *
import ti_rover as rv
disp_clr()
disp_cursor(0)
disp_at(6,"Press [clear] to stop","center")
rv.forward(20)
while not escape():
••a=rv.ranger_measurement()
••if a<0.2:
••••rv.color_rgb(255,0,0)
••••rv.stop()
••else:
••••rv.color_rgb(0,255,0)
••••rv.resume()
rv.stop()
disp_clr()
rv.color_rgb(0,0,255)
sleep(1)
rv.color_rgb(0,0,0)
BLNKSND - Sample TI-Innovator™ Hub Program
See: [Fns…]>Modul: ti_hub module
SQUARE - Sample TI-Innovator™ Rover Program
See: [Fns…]>Modul ti_rover module
STOP_GO - Sample ti_draw, ti_image, time Program
from ti_draw import *
from ti_image import *
from time import *
clear()
# Pixel screen upper left (0,0) to (319,209)
draw_text(100,20,"Traffic Light")
set_pen("medium","solid")
draw_rect(120,25,80,175)
set_color(192,192,192)
fill_rect(120,25,80,175)
set_color(128,128,128)
draw_circle(160,55,22)
draw_circle(160,110,22)
draw_circle(160,165,22)
def off(x,y):
••set_color(169,169,169)
••fill_circle(x,y,22)
••set_color(128,128,128)
••draw_circle(x,y,22)
for i in (1,20,1):
# Green
••set_color(51,165,50)
••fill_circle(160,165,22)
••sleep(3)
••off(160,165)
# Yellow
••set_color(247,239,10)
••fill_circle(160,110,22)
••sleep(2)
••off(160,110)
# Red
••set_color(255,0,0)
••fill_circle(160,55,22)
••sleep(3)
••off(160,55)
••show_draw()
