# Andrew Reibold

### Purdue University

Professional Interests: Aerospace Engineering

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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...

presque 7 ans ago

Question

Matlab Home License - New Computer?

If I purchase a Matlab Home, it says I can use it forever. I want to get a copy but my laptop is getting old and in the next y...

presque 7 ans ago | 1 answer | 0

### 1

answerQuestion

fft - Documentation Question - What is "L"?

Referring to this documentation http://www.mathworks.com/help/matlab/ref/fft.html What is L? L = 1000; ...

presque 7 ans ago | 1 answer | 0

### 1

answerbreak loop when answer is same as last answer

The reason it is failing - Matlab does NOT accept ZERO indices. The very first value of x is x(1), not x(0). Your script calls f...

environ 7 ans ago | 0

creating new number from two numbers

Judging by your example, I believe you mean b *repeated* a times. Not a times b. Yes there is a command for that. repmat...

environ 7 ans ago | 0

| accepted

Count the time a toggle button is pressed down

I use *tic* and *toc* to start and stop timers >> help tic tic Start a stopwatch timer. tic and TOC functions wo...

environ 7 ans ago | 0

Question

Can you fold a highlighted selection of code?

I have enabled cell folding with the double percent signs, %%. I can click each individual +/- on the left hand side of my sc...

environ 7 ans ago | 1 answer | 3

### 1

answerQuestion

Is it possible to refresh a web page I opened with Matlab?

Example: I open a webpage using [stat,h] = web('www.cnn.com') and I need to refresh it every 10 seconds. Is there a comman...

environ 7 ans ago | 1 answer | 0

### 1

answer??? Undefined variable "handles" or class "handles.slider1". in Guide for a function

Notice in all the other functions you pass in *handles* which allows you to access the data inside slider1_Callback(hObject...

environ 7 ans ago | 0

| accepted

How to break with two conditions

Instead of *AND*, use *&&* if m(:,:,j) < 0 && m2m(:,:,j) < 0 'AND' will not work. Make that change and start debugging f...

environ 7 ans ago | 0

Looking to animate two lines with the angle between them changing?

Bro, If you are working with EMG signals you should really know how to do Highschool trig... haha :-) But anyway, here is an ...

environ 7 ans ago | 0

Replacing cells in a cell array/Dealing with AM and PM using datenum

I'm really confused as to why you have *Data{1,3}{i,1}* for the first assignment, and *Data{3,i}{i,1}* for the second one. Shou...

environ 7 ans ago | 0

Creating a table of values from for loops

_I apologize for posting this as a comment._ This will make a table of your values, without the labels on the sides. I guess ...

environ 7 ans ago | 0

Delete rows that have the first same value and keep one row in matrix with 2 colums?

This removes any rows where the value in the first column has already been used. [~,idx] = unique(x(:,1)); %which row...

environ 7 ans ago | 1

Modifying this code to make a cell array?

sizegroup=input('Enter number of students: '); for k = 1:sizegroup name=input('enter name: ', 's'); %read in name ...

environ 7 ans ago | 0

| accepted

overwriting certain lines in a matrix with previous lines that satisfy a condition.

This is not the most efficient memory-wise, but it is a working solution and I tried to use basic commands. I just made up a mat...

environ 7 ans ago | 0

Function outputs the top row of a matrix, need it to output whole matrix

You have a counter here, but its not actually in a loop. I'm guessing thats a mistake. Count only ever equals 1 during assig...

environ 7 ans ago | 0

quiver plot - need help to remove NaN

This solution removes the black dots! The reason it looked awful after removing NaNs is because instead of just taking the no...

environ 7 ans ago | 2

| accepted

How to skip lines when reading a text file that start with specific input?

Hi Marian, Maybe this can get you started. I made a textfile of the example you provided, and a sample code is attached to re...

environ 7 ans ago | 2

| accepted

Table header - possible to use special characters?

I don't know if it actually works: Try using sprintf to print what text you want

environ 7 ans ago | 0

How to have variables displayed in workspace after every while loop iteration?

Not sure if you are having issues with the worksplace, or if you are actually trying to say you are having trouble displaying va...

environ 7 ans ago | 0

How to output WHOLE vector in result?

You need to tell Matlab where to store both output arguments or it only gives the first one under the variable 'ans' by default ...

environ 7 ans ago | 3

Help with basic problem

steps_required = ceil(((B-.2)-A)/C) Explanation: Assuming you want to take the minimum amount of steps, the distance you MUS...

environ 7 ans ago | 0

Question

Is it possible to disable plot/figure generation in an entire script?

This is more of a trivial request, but it would be convenient for me if there was a setting I could change before running a scri...

environ 7 ans ago | 1 answer | 0

### 1

answerhow can i stop while loop immediately by a push button?

I think you need to make sure 'Interupt' is set to 'Enabled' or 'On' or something like that. Is it possible?

environ 7 ans ago | 0

Mathlab R2013a Student bug

Technical support from MathWorks is available for activation, installation, and bug-related issues http://www.mathworks.com/...

plus de 7 ans ago | 0

How to disable automaticlly showing new plot

I think it will not bring it to the foreground if you set the figure visibility to 'off'. However, then you can't see it until y...

plus de 7 ans ago | 0

mean of matrix elements

myMatrix = rand(5760,1) for jj = 1:576 moving_avg(jj,1) = mean(myMatrix(jj*10-9:jj*10)); end Will make a matri...

plus de 7 ans ago | 1

I save a cellarry ,but the result looks like strange

Read the documentation... Haha "csvwrite does not accept cell arrays for the input matrix. To export cell arrays to a text ...

plus de 7 ans ago | 0

how to find mean with nan

Use *nanmean* If you dont have it, I wrote this For an array, x n_nans = 0; temp = x; for i = 1:length(x...

plus de 7 ans ago | 0