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# Peter

### Automotive Industry

161 total contributions since 2011

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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...

19 days 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...

1 month ago

Solved

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

1 month 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 ...

1 month ago

Solved

Create a vector
Create a vector from 0 to n by intervals of 2.

1 month ago

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

1 month ago

Solved

Find max
Find the maximum value of a given vector or matrix.

1 month 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 ...

1 month ago

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) ...

1 month ago | 0

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 ...

1 month ago | 0

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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 ...

1 month ago | 1

| accepted

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...

1 month ago | 1

| accepted

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

1 month ago | 0

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...

2 months ago | 0

| accepted

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...

2 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...

2 months ago

Solved

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

2 months ago

Solved

Inner product of two vectors
Find the inner product of two vectors.

2 months ago

Solved

Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

2 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.

2 months ago

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 ...

2 months ago | 1

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 ...

2 months ago | 1

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...

2 months ago | 0

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...

2 months ago | 0

| accepted

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...

2 months ago | 0

2 months ago | 1

| accepted

Passing variables in GUI vs. assignin then evalin
Nested Functions are your favorite friend when working with GUIs. Place the callbacks within the main UI, and they'll be able to...

2 months ago | 0

Trouble creating function out of variable in terms of x
Is there any particular reason it needs to be using symbolic math? MATLAB has a built-in polynomial evaluation function called ...

2 months ago | 0

How to make Ellipse rotates around focus
Haoang, Are you looking to have the ellipse rotate in a plot? You might be interested in applying a rotation matrix. See: ht...

2 months ago | 0

Matlab Plotting with out legend
Check out the textbox() or annotation() commands. Text objects are placed inside the plot, while annotations are placed on the f...

5 months ago | 0