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Integrate the sine of function using dblquad in Python
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I want to integrate Int sin(f(x,y,a,b)) dx dy using dblquad, where a and b are two parameters.
An example is shown below where x and y both go from 0 to 10, and a = 0,b=1.
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
However, this results in the output
Traceback (most recent call last):
File "./update.py", line 60, in <module>
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
AttributeError: 'function' object has no attribute 'sin'
Why does this happen? Is there a problem with applying np.sin to f (np.log gives the same result) when attempting an integral like this?
What is the correct way of doing this using dblquad?
Thanks!
python-3.x numpy
edited Jan 3 at 14:56
Aaron_ab
1,28021224
asked Jan 3 at 14:49
big albig al
212
add a comment |
I want to integrate Int sin(f(x,y,a,b)) dx dy using dblquad, where a and b are two parameters.
An example is shown below where x and y both go from 0 to 10, and a = 0,b=1.
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
However, this results in the output
Traceback (most recent call last):
File "./update.py", line 60, in <module>
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
AttributeError: 'function' object has no attribute 'sin'
Why does this happen? Is there a problem with applying np.sin to f (np.log gives the same result) when attempting an integral like this?
What is the correct way of doing this using dblquad?
Thanks!
python-3.x numpy
edited Jan 3 at 14:56
Aaron_ab
1,28021224
asked Jan 3 at 14:49
big albig al
212
add a comment |
I want to integrate Int sin(f(x,y,a,b)) dx dy using dblquad, where a and b are two parameters.
An example is shown below where x and y both go from 0 to 10, and a = 0,b=1.
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
However, this results in the output
Traceback (most recent call last):
File "./update.py", line 60, in <module>
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
AttributeError: 'function' object has no attribute 'sin'
Why does this happen? Is there a problem with applying np.sin to f (np.log gives the same result) when attempting an integral like this?
What is the correct way of doing this using dblquad?
Thanks!
python-3.x numpy
edited Jan 3 at 14:56
Aaron_ab
1,28021224
asked Jan 3 at 14:49
big albig al
212
I want to integrate Int sin(f(x,y,a,b)) dx dy using dblquad, where a and b are two parameters.
An example is shown below where x and y both go from 0 to 10, and a = 0,b=1.
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
However, this results in the output
Traceback (most recent call last):
File "./update.py", line 60, in <module>
dblquad(f*np.sin(f),0,10,0,10,args=(0,1))
AttributeError: 'function' object has no attribute 'sin'
Why does this happen? Is there a problem with applying np.sin to f (np.log gives the same result) when attempting an integral like this?
What is the correct way of doing this using dblquad?
Thanks!
python-3.x numpy
python-3.x numpy
edited Jan 3 at 14:56
Aaron_ab
1,28021224
asked Jan 3 at 14:49
big albig al
212
edited Jan 3 at 14:56
Aaron_ab
1,28021224
asked Jan 3 at 14:49
big albig al
212
edited Jan 3 at 14:56
Aaron_ab
1,28021224
edited Jan 3 at 14:56
Aaron_ab
1,28021224
edited Jan 3 at 14:56
Aaron_ab
1,28021224
1,28021224
asked Jan 3 at 14:49
big albig al
212
asked Jan 3 at 14:49
big albig al
212
asked Jan 3 at 14:49
big albig al
212
212
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
There are two issues with your code:
The first is that python cannot calculate the sine of a function, it needs to calculate the sine of a number (which of course can be a result of another function): that is your AttributeError.
The second is a syntax error in your dblquad. The y limits are set as a function of x, as per dblquad documentation
Working example:
import numpy as np
from scipy.integrate import dblquad
def f(x, y, a, b):
return a + b + x + y
def integrand(x, y, a, b):
return f(x, y, a, b) * np.sin(f(x, y, a, b))
dblquad(integrand,0,10,lambda x: 0, lambda y: 10,args=(0,1))
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
There are two issues with your code:
The first is that python cannot calculate the sine of a function, it needs to calculate the sine of a number (which of course can be a result of another function): that is your AttributeError.
The second is a syntax error in your dblquad. The y limits are set as a function of x, as per dblquad documentation
Working example:
import numpy as np
from scipy.integrate import dblquad
def f(x, y, a, b):
return a + b + x + y
def integrand(x, y, a, b):
return f(x, y, a, b) * np.sin(f(x, y, a, b))
dblquad(integrand,0,10,lambda x: 0, lambda y: 10,args=(0,1))
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
add a comment |
There are two issues with your code:
The first is that python cannot calculate the sine of a function, it needs to calculate the sine of a number (which of course can be a result of another function): that is your AttributeError.
The second is a syntax error in your dblquad. The y limits are set as a function of x, as per dblquad documentation
Working example:
import numpy as np
from scipy.integrate import dblquad
def f(x, y, a, b):
return a + b + x + y
def integrand(x, y, a, b):
return f(x, y, a, b) * np.sin(f(x, y, a, b))
dblquad(integrand,0,10,lambda x: 0, lambda y: 10,args=(0,1))
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
add a comment |
There are two issues with your code:
The first is that python cannot calculate the sine of a function, it needs to calculate the sine of a number (which of course can be a result of another function): that is your AttributeError.
The second is a syntax error in your dblquad. The y limits are set as a function of x, as per dblquad documentation
Working example:
import numpy as np
from scipy.integrate import dblquad
def f(x, y, a, b):
return a + b + x + y
def integrand(x, y, a, b):
return f(x, y, a, b) * np.sin(f(x, y, a, b))
dblquad(integrand,0,10,lambda x: 0, lambda y: 10,args=(0,1))
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
There are two issues with your code:
The first is that python cannot calculate the sine of a function, it needs to calculate the sine of a number (which of course can be a result of another function): that is your AttributeError.
The second is a syntax error in your dblquad. The y limits are set as a function of x, as per dblquad documentation
Working example:
import numpy as np
from scipy.integrate import dblquad
def f(x, y, a, b):
return a + b + x + y
def integrand(x, y, a, b):
return f(x, y, a, b) * np.sin(f(x, y, a, b))
dblquad(integrand,0,10,lambda x: 0, lambda y: 10,args=(0,1))
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
answered Jan 3 at 15:13
MstainoMstaino
2,1471413
2,1471413
add a comment |
add a comment |
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