Answered

I need help with step function

Hi Anna, The (unit) step function is basically a function that goes from 0 to 1, generally at time 0, scaled by whatever magnit...

I need help with step function

Hi Anna, The (unit) step function is basically a function that goes from 0 to 1, generally at time 0, scaled by whatever magnit...

2 months ago | 0

Answered

Problems With Function Error

Up until recently, MATLAB had a requirement to separate scripts from functions. A file could hold one but not both types. Now, i...

Problems With Function Error

Up until recently, MATLAB had a requirement to separate scripts from functions. A file could hold one but not both types. Now, i...

2 months ago | 0

Answered

Assigning or replacing elements of another array into an array based on indices

Ali, I suggest you use logical indexing for this instead of FIND. It's faster and a little cleaner. Hope this helps! b = [0 ...

Assigning or replacing elements of another array into an array based on indices

Ali, I suggest you use logical indexing for this instead of FIND. It's faster and a little cleaner. Hope this helps! b = [0 ...

2 months ago | 0

Answered

Error using figure First argument must be a figure object or a positive Integer

Figure is a function. Try: figure(4) This should activate a figure with ID number 4.

Error using figure First argument must be a figure object or a positive Integer

Figure is a function. Try: figure(4) This should activate a figure with ID number 4.

2 months ago | 0

Answered

Run Simulink Model as a Function

Hi Sze, To clarify, you're hoping to run a simulink model from within a call to ODE45? While possible, I'm afraid this is goi...

Run Simulink Model as a Function

Hi Sze, To clarify, you're hoping to run a simulink model from within a call to ODE45? While possible, I'm afraid this is goi...

2 months ago | 0

| accepted

Answered

find max value of structure

If I'm understanding correctly, you have a struct array, s, of size 1x30, with a single field (let's call it x). Something like...

find max value of structure

If I'm understanding correctly, you have a struct array, s, of size 1x30, with a single field (let's call it x). Something like...

3 months ago | 0

Solved

Word Counting and Indexing

You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

4 months ago

Solved

Test for balanced parentheses

Given the input inStr, give the boolean output out indicating whether all the parentheses are balanced. Examples: * If ...

4 months ago

Solved

Flip the vector from right to left

Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

4 months ago

Solved

Whether the input is vector?

Given the input x, return 1 if x is vector or else 0.

4 months ago

Solved

Doubling elements in a vector

Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

4 months ago

Answered

Derivative from ode45

Generally I send the result of ode45 back through my function as a post-processing step. [t,x] = ode45(@myDerivFcn,tspan,x0) ...

Derivative from ode45

Generally I send the result of ode45 back through my function as a post-processing step. [t,x] = ode45(@myDerivFcn,tspan,x0) ...

4 months ago | 0

Answered

How to solve two differential equations simultaneously with one having a matrix form of initial condition?

Hi Adham, Just to be clear, it's an ordinary differential equation, is /? If so, and each matrix term is separable, then you ...

How to solve two differential equations simultaneously with one having a matrix form of initial condition?

Hi Adham, Just to be clear, it's an ordinary differential equation, is /? If so, and each matrix term is separable, then you ...

4 months ago | 0

| accepted

Answered

Problem with xlim when having date

Hi Behzad, xlim sets the absolute max and min of the graph that you're looking at. To set the interval for grid lines, use the ...

Problem with xlim when having date

Hi Behzad, xlim sets the absolute max and min of the graph that you're looking at. To set the interval for grid lines, use the ...

4 months ago | 1

| accepted

Answered

Running ode45 from problem statement

Hi Daniel, For your problem, you were very close and had the solutions to each equation worked out correctly. The function sign...

Running ode45 from problem statement

Hi Daniel, For your problem, you were very close and had the solutions to each equation worked out correctly. The function sign...

4 months ago | 1

| accepted

Answered

please help me, how do I make the code for the equation in the following picture?

You can't code an infinite sum exactly, but fortunately, this one is bounded (x^2 on the denominator and the numerator is bounde...

please help me, how do I make the code for the equation in the following picture?

You can't code an infinite sum exactly, but fortunately, this one is bounded (x^2 on the denominator and the numerator is bounde...

4 months ago | 0

Answered

Sort data based on different column

Try using the sortrows command in conjunction with a transpose. Apply it once to exploit column sorts (e.g. Column 1 is Row 1 ab...

Sort data based on different column

Try using the sortrows command in conjunction with a transpose. Apply it once to exploit column sorts (e.g. Column 1 is Row 1 ab...

4 months ago | 0

| accepted

Answered

Mimicking the font that title() uses when calling it with latex interpreter

Try using the Tex interpreter with the \bf switch? title('\bf\nabla TITLE','Interpreter','tex') seems to get the bold you're lo...

Mimicking the font that title() uses when calling it with latex interpreter

Try using the Tex interpreter with the \bf switch? title('\bf\nabla TITLE','Interpreter','tex') seems to get the bold you're lo...

4 months ago | 0

Solved

Renaming a field in a structure array

MATLAB has a <http://www.mathworks.com/help/techdoc/ref/setfield.html setfield> and a <http://www.mathworks.com/help/techdoc/ref...

4 months ago

Solved

Get the length of a given vector

Given a vector x, the output y should equal the length of x.

5 months ago

Solved

Vector creation

Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

5 months ago

Answered

How can I find correlation between two variables X & Y which I have obtained experimentally?

Three points will give you a line, but I'd be hesitant to call it a trend. In general, linear regression of X and Y gives you a ...

How can I find correlation between two variables X & Y which I have obtained experimentally?

Three points will give you a line, but I'd be hesitant to call it a trend. In general, linear regression of X and Y gives you a ...

5 months ago | 1

Answered

Evaluating function handle with array input arguments

Are you specifically looking at a binomial expansion? If so, there's a trick for composing that. For a generalized "raise this ...

Evaluating function handle with array input arguments

Are you specifically looking at a binomial expansion? If so, there's a trick for composing that. For a generalized "raise this ...

5 months ago | 1

Answered

Combine graphs from different script (directory)

Like you thought, the cleanest process is to write a 5th script which will do as you've written above. If the code is easily con...

Combine graphs from different script (directory)

Like you thought, the cleanest process is to write a 5th script which will do as you've written above. If the code is easily con...

5 months ago | 0

Answered

Running/testing scripts on multiple Matlab/Simulink versions?

MATLAB can run in a headless mode from the command line, where it can take a script to execute. It's been a while since I've don...

Running/testing scripts on multiple Matlab/Simulink versions?

MATLAB can run in a headless mode from the command line, where it can take a script to execute. It's been a while since I've don...

5 months ago | 0

| accepted

Answered

How to read and arrange certain data in multiple text file?

This seems like a good opportunity to leverage MATLAB's table datatype: https://www.mathworks.com/help/matlab/ref/table.html U...

How to read and arrange certain data in multiple text file?

This seems like a good opportunity to leverage MATLAB's table datatype: https://www.mathworks.com/help/matlab/ref/table.html U...

5 months ago | 0