Community Profile # Vira Roy

Last seen: 11 days ago Active since 2019

Research Scholar at IIT Kharagpur.

Programming Languages:
Python

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Question

Plotting the content of huge matrix.
Problem: I have a huge 449x10001 dimension matrix and want to make a scatter plot from that. While for loop works good enough fo...

5 months ago | 1 answer | 0

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Question

Manipulating a multidimensional array.
PROBLEM: I have managed to create a multidimensional array storing eigenvectors of a hamiltonian. Now I want to manipulate the a...

6 months ago | 1 answer | 0

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Question

Energy eigenvalues plot of a Hamiltonian(Weyl)
Question: I have a Hamiltonian which I have to construct in a meshgrid and then plot the energy eigenvalues to get a surf plot. ...

9 months ago | 1 answer | 0

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Question

Matrix form for a square lattice arrangement.
Question: I want to have a matrix form for hopping between nearest points on a square lattice. My Attempt: To start and explai...

1 year ago | 2 answers | 0

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Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

1 year ago

Solved

The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

1 year ago

Question

Matrix form for creation and annihilation operator with spins.
This might be little geared towards physics but if anyone can help, it would so much helpful for me. So basically I want the mat...

1 year ago | 1 answer | 0

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Comparing the entries of matrix in pairs
Problem: I have a matrix A (of n by m dimension) which for this example is 10 by 3. Now I want to compare the entries of the ma...

1 year ago | 1 answer | 0

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Question

Generation of a basis vector following a constraint.
Problem: I Want to generate a set of basis vectors which follows the constraint . While I can do that as seen from the below wo...

1 year ago | 1 answer | 0

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Question

Solving a system of differential equations using ODE45 by switching between two functions depending upon the solution obtained in last iteration.
Problem: I have a system of two coupled differential equations but i want to put an conditional statement so that depending upon...

2 years ago | 1 answer | 0

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Question

3 dimensional plotting by varying the initial conditions
I have a set of four differential equations(DE) and I want to see how one of them varies with the other two. I can solve the equ...

2 years ago | 1 answer | 0

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Question

3D Phase portrait for a set of differential equations
I have a set of three differential equations and I want to make a phase portrait of them. I have some idea of using quiver or pl...

2 years ago | 1 answer | 0

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Question

Solving system of Non-linear Equations graphically
Problem Statement: I want to solve a set of equations graphically by plotting their graphs and looking at the interesection. I k...

2 years ago | 1 answer | 0

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Question

Eigenvalues of a Matrix for a mesh of values and 3D plot.
Problem: Here is what i want to do. I need to construct an Hamiltonian matrix of dimension 2 by 2, then diagonalise it and find ...

3 years ago | 1 answer | 0

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Question

Plotting of null surfaces and Warning: Matrix is singular to working precision.
Problem: I have the following three sets of equation which i need to plot as planes in 3D system. ...

3 years ago | 0 answers | 0

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Question

Numerical Integration from -Inf to Inf
Problem: I have the following integral which i need to evaluate numerically. ...

3 years ago | 1 answer | 0

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Question

Executing a function in iterations
Problem Statement: I have a system of differential equations in which i need to run a particular function for n iterations using...

3 years ago | 1 answer | 0

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Question

Adding a piecewise time dependent term in system of differential equation
Problem Statement: I have a system of differential equation and out of which few has time dependent coefficients and in my case ...

3 years ago | 2 answers | 1