No graph plotted in output using python

Question

I have a code and I want to see output using vpython. following is the code

#!/usr/local/bin/ python3
from vpython import *
Plot1 = gcurve ( color = color . white )
for x in arange(0., 8.1, 0.1):
        Plot1.plot( pos = (x, 5.*cos(2.*x)*exp(-0.4*x)) )

graph1 = gdisplay ( width =600, height =450 ,\
        title="Visual 2D Plot", xtitle="x", ytitle="f(x)",\
        foreground = color . black , background = color . white )
Plot2 = gdots ( color = color . black )

for x in arange( -5., +5, 0.1 ):
        Plot2.plot(pos = (x, cos(x)))

it is giving this error, however, it is showing a box of a white background with no plot in it. Error: name 'gdisplay' is not defined

how can I define g display?

Synthaze · Accepted Answer · 2021-04-08 19:16:18Z

1

You need to import the visual module of VPython:

from visual.graph import *

answered Apr 8, 2021 at 19:16

Synthaze

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2 Comments

ashice Over a year ago

it is not working from visual.graph import * ModuleNotFoundError: No module named 'visual'

user1114907 Over a year ago

visual was the name of the module many years ago but is now vpython, and as noted here before, the graphing machinery is now named "graph", not "gdisplay".

user1114907 · Accepted Answer · 2021-06-22 06:36:59Z

0

With VPython 7 the name is "graph", not gdisplay. And "from vpython import *" includes the graph object.

answered Jun 22, 2021 at 6:36

user1114907

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