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# random09983492

##### Last seen: 3 months ago
27 total contributions since 2011

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Question

Can an amplifier in Simulink receive its input from a workspace variable?
I am trying to model an amplifier using the Amplifier block in Simulink. I am familiar with driving the amplifier using a signal...

4 years ago | 0 answers | 0

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Question

Problem with 64 bit WAV file using audiowrite
I am using a script to generate test wav files at different sampling rates and bit depths. So far everything has worked fine up ...

4 years ago | 0 answers | 0

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Solved

Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

5 years ago

array length is not what I've set...
The first time the loop executes it sets Hopt_new(90). The second time it sets Hopt_new(91). If you want to start at the f...

5 years ago | 0

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Why is 'cp_2-feb-2016_1' invalid string in MATLAB?
Strings in Matlab must be surrounded by single quotes. For example: >> 'cp_2-feb-2016_1' ans = cp_2-feb-2016...

5 years ago | 0

Solved

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

5 years ago

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

5 years ago

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

5 years ago

Import columns from a CSV by header name
The csvread function is capable of doing what you want to do.

5 years ago | 0

| accepted

Solved

Given a and b, return the sum a+b in c.

5 years ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

5 years ago

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...

5 years ago

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

5 years ago

Matlab is making small errors during computations
Check here: <http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F link> If you need...

8 years ago | 0

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Passing Variable Number of Arrays to a function with varargin
Hi Doug, varargin starts at index 1, not index 2. That should fix it up.

8 years ago | 0

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How to find x,y matrix using for sintax
Hi, Here is my implementation. Let me know if there is something you do not understand. [r,c] = size(a); % Starts...

8 years ago | 0

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How to find percentages of red, yellow, orange and green in an image?
Hi Siddharth, I would take a look at the imread function build into Matlab. For an RGB image of size M-by-N, it will import t...

8 years ago | 0

How do I even open the Instrument Control Toolbox?
Hi Z, By default, toolboxes are not listed in your Win7 start menu (I'm not sure you can make them appear there). You can ope...

8 years ago | 0

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Is it possible to combine strings and variables in a matrix?
Hi Z, Here are 2 solutions: 1. Change: disp [rate, duration] to: disp([rate, duration]) 2. Use fprintf state...

8 years ago | 2

Optimization of a simple IF-FOR loop
Hi Mohsen, A few things I will recommend: 1. Take advantage of Matlab's Profiler. Type profview in the Command Window to a...

8 years ago | 0

Subscripted assignment dimension mismatch.
Hi Jonathan, Your problem is that the findpeaks function can return an empty array, [ ], or an array with multiple entries [p...

8 years ago | 0

Question

Indexing error using ezplot
Hi, I'm writing a code that uses symbolic variables and ezplot. My equation contains 17 variables, and I am trying to find the d...

8 years ago | 0 answers | 0

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Question

Minute error in array causes == to be ineffective
Hi, I am trying to use an if statement using the == comparator to search an array of numbers. Something like this: for i = ...

8 years ago | 2 answers | 0

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While Loop Help
I assume you will add items to the ship based solely on value/weight ratio? If so, this is quite simple. A while loop is writ...

10 years ago | 0

| accepted

Question

Using EOF flag to change multimedia block parameters
Hi, I am wondering if it is possible to use the EOF flag on Simulink's 'From Multimedia File' block to trigger block parameter ...

10 years ago | 1 answer | 0