# 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...

mer än 7 år 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...

nästan 8 år 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; ...

nästan 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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 ...

ungefär 8 år 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...

ungefär 8 år 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 ...

ungefär 8 år 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...

ungefär 8 år 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 ...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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

ungefär 8 år 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...

ungefär 8 år 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 ...

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år ago | 1 answer | 0

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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?

ungefär 8 år ago | 0

Mathlab R2013a Student bug

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

ungefär 8 år 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...

ungefär 8 år 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...

ungefär 8 år 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 ...

ungefär 8 år 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...

ungefär 8 år ago | 0