Multiple plots on the same graph

Question

I want to plot on the same graph one function (data coming from an array) and the line between (xmin,ymin) to (xmax,ymax) of data

import numpy as np
import matplotlib.pyplot as plt

exo_data = np.loadtxt('./exoplanets.dat')

au2m        = 149597870700
day2seconds = 86400 
M_Jupiter   = 1.898e27
M_Sun       = 1.989e30
G           = 6.674e11

R=exo_data[:,0]*au2m
T=exo_data[:,1]*day2seconds 
Mp=exo_data[:,2]*M_Jupiter
Ms=exo_data[:,3]*M_Sun
Mstar=np.mean(Ms)
C=(mth.pi*4)/G*Mstar

x=R**3
y=T**2

xmin=np.min(R)
ymin=np.min(T)
xmax=np.max(R)
ymax=np.max(T)

plt.plot([xmin,ymin], [xmax,ymax], color='red')
plt.plot(x,y, 'ro', color='blue')
plt.show
plt.close

I have only the first plot in spyder console, not the second one

Expected this :

score 0 · Answer 1 · answered Oct 12 '19 at 09:33

0

I'm not sure if it's going to work for you, I suggest you to try the following

plt.plot([xmin,ymin], [xmax,ymax], x, y,'ro', color = 'red')
plt.show

answered Oct 12 '19 at 09:33

Rahul Sunny

11
3

It doesn't work. I have only the bullets but not the line, as im my first picture – Michel Chance Oct 12 '19 at 11:06
exo_data is an array [256,4], dimension 2 – Michel Chance Oct 12 '19 at 11:18

score 0 · Answer 2 · answered Oct 12 '19 at 09:34

0

Try to run the script not in the spider console, but in the editor to the left of it. The console processes command by command, therefore, it will process one plot at the time and print it in the same way.

Create a file code.py with your script, and then run it. You can do this with the play button in spyder, or by going to a console and typing python code.py.

Proof are doing everything right. As stated here. This should work:

from numpy import *
import math
import matplotlib.pyplot as plt

t = linspace(0, 2*math.pi, 400)
a = sin(t)
b = cos(t)
c = a + b

plt.plot(t, a, 'r') # plotting t, a separately 
plt.plot(t, b, 'b') # plotting t, b separately 
plt.plot(t, c, 'g') # plotting t, c separately 
plt.show()

And should produce this.

answered Oct 12 '19 at 09:34

Duarte O.C

11
4

I run the script from the editor on the left with the run button and I have the result in the console. I have only the bullets not the line.. – Michel Chance Oct 12 '19 at 11:03
exo_data is an array [256,4], dimension 2 – Michel Chance Oct 12 '19 at 11:18
Sorry the error is : only size-1 arrays can be converted to Python scalars – Michel Chance Oct 12 '19 at 13:08
Moreover, you do not define R and T anywhere, so not sure if your file will run – Duarte O.C Oct 12 '19 at 21:03
Link me the `dat` dataset so I can try and reproduce please. – Duarte O.C Oct 14 '19 at 06:27
Finally it works... It's my fault. I declared G with e11 and it must be e-11 – Michel Chance Oct 15 '19 at 07:17

score 0 · Answer 3 · answered Oct 15 '19 at 07:18

0

Finally it works... It's my fault. I declared G with e11 and it must be e-11

answered Oct 15 '19 at 07:18

Michel Chance

79
1
10

Multiple plots on the same graph

3 Answers3