# River Rock

I don't want my name to be associated with Mathworks in any possible way.

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Question

save gui handles between uiwait/uiresume calls

Hi, I'd like to implement the following behaviour in my gui app: - start iterating through a for loop and compute an array ...

ungefär 7 år ago | 1 answer | 1

### 1

answerSolved

Swap the first and last columns

Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

mer än 7 år ago

Question

large differences between continuous and discrete tf

Hello, While working on an assignment, I noticed some differences between continuous and discrete tf and I cannot figure out ...

nästan 8 år ago | 0 answers | 0

### 0

answersQuestion

Code completion for toolbox functions

Hi I installed the Symbolic Math Toolbox over an existing Matlab 2012a installation and I noticed there is no auto-completion...

ungefär 8 år ago | 0 answers | 0

### 0

answersReading a 5.0 mat file in c++

The example found in /extern/examples/eng_mat/matdgns.c also generate errors, as I fail to link the static library Using ...

nästan 9 år ago | 0

Question

Reading a 5.0 mat file in c++

Hi :) How would you recommend me to read the contents of a 5.0 mat-file in c++? I've found a mat.h file in matlabroot/exte...

nästan 9 år ago | 1 answer | 0

### 1

answerQuestion

Modal realization in Matlab

Hi Given the following transfer matrix : T = From input 1 to output: s - 1 ------------- s^2 + 3 s + ...

mer än 9 år ago | 1 answer | 0

### 1

answerQuestion

Find a PID Controller

Hi I want to find a PID Controller for the following process: Hp(s) = 1 / (s^2 + 1) or Hp = tf (1, [1 0 1] ); Pe...

mer än 9 år ago | 1 answer | 0

### 1

answerRepresent Simulink Integrator block as Matlab Function

My main goal is to implement the differential equations of a physical system using a single Matlab Function. As the sums and gai...

mer än 9 år ago | 0

Represent Simulink Integrator block as Matlab Function

Can anybody suggest a better way of implementing the numerical integration ? The code has to be written inside the Matlab Functi...

mer än 9 år ago | 0

Question

Represent Simulink Integrator block as Matlab Function

Hi. I need to implement the following behavior : <<http://i.imgur.com/a6SsM.png>> The Integrator and my_Integrator bloc...

mer än 9 år ago | 5 answers | 1

### 5

answersSolved

Make a checkerboard matrix

Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

mer än 9 år ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

mer än 9 år ago

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...

mer än 9 år ago

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 ...

mer än 9 år 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...

mer än 9 år ago

Simulink transfer function with sinusoidal parameters

Thanks for your great response I had to adapt the diagram for the denominator [1 K 0], as you use [1 K 1] in your example. ...

mer än 9 år ago | 0

Question

Simulink transfer function with sinusoidal parameters

Hi I need to design a transfer function in the following form: 1 / (s^2 + K*s) where K is scalar and varies sinusoidal; the d...

mer än 9 år ago | 2 answers | 1

### 2

answersSimulink transfer function with sinusoidal parameter

Your answer does solve the initial problem. Now how about modifying the parameters of the denominator?

mer än 9 år ago | 0

Question

Simulink transfer function with sinusoidal parameter

Hi I need to design a transfer function in the following form: K/ (Ts + 1) where the numerator K is scalar and varies sinuso...

mer än 9 år ago | 2 answers | 0

### 2

answersSolved

Determine if input is odd

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

nästan 10 år 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 ...

nästan 10 år 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...

nästan 10 år 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:...

nästan 10 år ago

Question

Simulink constant parameter read inside Matlab Function block

Hi. I defined some Simulink parameters to the Model Workspace of a Simulink model. When used in a Constant block, the code com...

nästan 10 år ago | 2 answers | 0

### 2

answersReading a wire value from Simulink into the Command Window or GUIDE

Thanks for your answer; I was able to get the data from the filter's output data=get_param('main/level/level_filter','Runtime...

nästan 10 år ago | 0

Question

Reading a wire value from Simulink into the Command Window or GUIDE

I want to read the values that passes through a wire in my Simulink model. This value should be displayed in a text field on ...

nästan 10 år ago | 2 answers | 0