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

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

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

Answered

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...

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

| accepted

Answered

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...

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

Answered

Import columns from a CSV by header name

The csvread function is capable of doing what you want to do.

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

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

Answered

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...

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

| accepted

Answered

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.

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

| accepted

Answered

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...

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

| accepted

Answered

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...

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

Answered

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...

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

| accepted

Answered

how can I do time shifting of 0.001seconds in a dirac delta function and in a PN sequence. means i want p(n-.001) each time i try i get the following error :- Attempted to access PN1(1,0.999); index must be a positive integer or logical. my code is:

Hi Vaishali, Matlab array indices must be positive integers. PN1 is a matrix or array. PN1(x,y) specifies the array element a...

how can I do time shifting of 0.001seconds in a dirac delta function and in a PN sequence. means i want p(n-.001) each time i try i get the following error :- Attempted to access PN1(1,0.999); index must be a positive integer or logical. my code is:

Hi Vaishali, Matlab array indices must be positive integers. PN1 is a matrix or array. PN1(x,y) specifies the array element a...

8 years ago | 0

Answered

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...

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

Answered

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...

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

Answered

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...

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

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

Answered

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...

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

Question

fda tool not meeting frequency specifications

I'm developing an audio equalizer using MATLAB's fdatool, and I'm noticing some very strange things are happening. For low-frequ...

10 years ago | 0 answers | 0