# Shae Morgan

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**Content Feed**

How to remove units from a plot?

You can try to save and re-plot the output of the graph, then use xlabel to solve your problem. [z,x,y]=lsim(G,sq_wave,t) plot...

bijna 2 jaar ago | 1

| accepted

Question

Sendmail not working in a standalone App Designer application on MAC only

Hello, I've made an app designer app where users can save some information (generated in the app) and then e-mail an excel spre...

bijna 2 jaar ago | 0 answers | 0

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answersQuestion

App Designer packaging standalone desktop app - MAC

Let me start out by restating that I'm on MATLAB 2020a on a MAC computer. I have an app that I've designed in MATLAB saved in ...

bijna 2 jaar ago | 0 answers | 0

### 0

answersSolved

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:...

bijna 2 jaar ago

Question

Change focus after tab selection in app designer

I'm workin in app designer, and have an app that has a tabgroup component with a corresponding selectionchanged callback functio...

ongeveer 2 jaar ago | 0 answers | 0

### 0

answersQuestion

sendmail works when I run my app but not when another user uses it in a packaged app

Hello, I made an app in app designer and part of the app asks the user to input their e-mail address and then the app sends the...

ongeveer 2 jaar ago | 1 answer | 0

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answerQuestion

locked output files students can turn in

Hello, I'm wondering if I can get some input on a problem. I'm trying to save data generated in an app (made with AppDesigner)...

ongeveer 2 jaar ago | 1 answer | 0

### 1

answerHow do I control the xticks if x is a long imported excel column (Time Format: HH:MM:SS)?

Try this out: Since I didn't have your variable class, I had to assume you're dealing with time-stamps here. This works for th...

ongeveer 2 jaar ago | 1

| accepted

How to select certain columns of a matrix only when the values in certain rows showing the the double of the value in a particular row of a column?

do this in two steps: 1) find the indices where the values > 2 and then 2) sum the columns - if all rows 1-3 and 5 are less than...

ongeveer 2 jaar ago | 0

How do i multiply 2 increasing variables

Is this more whasdfat you were looking for? v0 = (10:1:20); theta = (30:1:40); for i= 1:length(v0) for j = 1:length(thet...

ongeveer 2 jaar ago | 0

| accepted

Plotting the average line of a graph of a column imported from an excel

Wha about this: t1 = datetime(2020,8,12,13,11,24); %start time t2 = datetime(2020,8,12,13,18,36); %end time time5 = t1:second...

ongeveer 2 jaar ago | 1

Problem while plotting twice in a figure

Try this out: Since I didn't have your variable class, I had to assume you're dealing with time-stamps here. This works for th...

ongeveer 2 jaar ago | 0

| accepted

How to run a code several times using a for loop

Something like this? Datay=rand(1,24) Noutput=rand(1,24) %Noutput: Matrix: 1X24 % The following produce must be performed f...

ongeveer 2 jaar ago | 0

The scale of the x-axis (Format: HH:MM:SS)

try looking into the 'xtick' property to specify which x-ticks you want to show. it'll suppress the rest of them x=1:10; %demo ...

ongeveer 2 jaar ago | 0

| accepted

Save data from for-loop and their use

You just need to index your output and then reference the appropraite index for i=1:4 [C1(i,:),L1(i,:)]=wavedec(SatTrDatax_Nor...

ongeveer 2 jaar ago | 0

| accepted

Bandstop starts at 2.7 dB instead of 0 dB. Why? Demo Code from a Matlab Book

If a filter is a perfect rectangular filter, then filtering begins at the cutoff frequency and goes to the desired attenuation/g...

ongeveer 2 jaar ago | 0

How to make a new matrix out of the combination of 12 matrix

try concatenating them? Or do you want to add them across? You say "combination" do you mean an average or a sum? We need more i...

ongeveer 2 jaar ago | 0

| accepted

simultaneous noise and pure tone

How your sounds currently are set up, they are concatenated to be added one onto the other. If you change your concatenation to ...

ongeveer 2 jaar ago | 1

| accepted

Equation for Amplitude difference between two tones

The equation for dB is 10*log10(Incident_intensity/reference_intensity). When dealing with pressures (as we usually are in soun...

ongeveer 2 jaar ago | 1

| accepted

generate signals with different SNR

Here's a solution! Hope it's helpful %setup fs=100000; noise_dur=3; sine_freq=10000; sine_dur=.1; t=0:1/fs:sine_dur-1/fs; ...

ongeveer 2 jaar ago | 1

| accepted

Generating pure tone and noise

See here for an excellent solution to generating your noise from one of your previous questions: Generate noise You can use th...

ongeveer 2 jaar ago | 1

| accepted

How to fix the upper asymptote in sigmoid?

Your call to mysigmoid has 6 input arguments (b,c,x,xon,xrated,a; the last of which is your "a"), but your defined function onl...

ongeveer 2 jaar ago | 1

| accepted

What is missing from MATLAB #2 - the next decade edition

facet_wrap or facet_grid (or general ggplot2 functionality) version of subplots, or some altered, simpler customizability for su...

ongeveer 2 jaar ago | 2

Harmonics of Fourier series

Question asked/answered elsewhere https://www.mathworks.com/matlabcentral/answers/491350-harmonics-of-fourier-series?s_tid=answ...

ongeveer 2 jaar ago | 1

FOR LOOP NOT WORKING

EXANGLES = -34:1:184; EYANGLES = deg2rad(EXANGLES); EVSUB1 = 90; FT126 = 126; for i = 1:length(EXANGLES) if EXANGLES(...

ongeveer 2 jaar ago | 1

rise/fall time

%set-up parameters fs=44100; %CD quality - also conveniently divisible by 30 and 25 stim_dur=.025; %duration in seconds ISI_d...

ongeveer 2 jaar ago | 1

| accepted

Question

add audio to a static image

I have an audio signal and a picture. I'm trying to output a video of the static image for the duration of the audio that's play...

meer dan 2 jaar ago | 1 answer | 0

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answerQuestion

MATLAB 2019a ginput spectrogram issue

I recently updated to 2019a from 2018a and my code no longer works. I get the error below from the following code: y = randn(10...

meer dan 3 jaar ago | 1 answer | 0

### 1

answerQuestion

Why are there minor differences in the creation of two time series for signal generation?

I'm making a 1000 Hz tone for presentation. MATLAB recommends creating the time series (t) this way: amp=.01; %amplitude f...

ongeveer 4 jaar ago | 1 answer | 0