# Cameron B

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**Content Feed**

How to work with observed dates in the format 'dd/mm/yyyy' imported from Excel into MATLAB.

%simulate your data input. i assume it is a string. if not just change your %input to make it a string. b = strings(20,1); fo...

6 months ago | 0

| accepted

function who seems slow

Not sure, but maybe one of these is faster load('filename.mat') exist('my_variable') or load('filename.mat','my_variable')

6 months ago | 0

How can i get value from field that created by uideditfiled command ?

Are you just trying to get the value of the input from the user? If so then it's YourNum = app.NumEditField.Value

6 months ago | 0

Question

Adding Second Callback to UIAxes Toolbar in App Designer

I'm trying to find out how to add a second callback to the existing toolbar function(s) in App Designer so that one may, for exa...

6 months ago | 1 answer | 1

### 1

answerHow do i select a point on matlab UIaxes and then get data for it?

Looks like there's something easier to do in 2020a. May want to try it out in 2019a or 2019b as I did not see it in the current ...

1 year ago | 0

App Designer: Calling variables created in other functions

This is what I came up with. I'm not sure if it's what you're after, but it looks like it could be. The first thing to learn abo...

1 year ago | 0

How to properly import excel data, insert values through "EDIT FIELD" and run a function using App Designer in Matlab?

What is this output = thorntwMater() You have nothing as the input arguements so that's the error it's going to throw.

1 year ago | 0

Adding Custom Data Tip to 3D UIAxes slice() plot

Not sure if this is what you’re looking for, but this may help. https://www.mathworks.com/matlabcentral/answers/497552-hi-when...

1 year ago | 0

How can I plot in specific intervals?

hold on for ii = 1:100:size(YourArray,1)-100 plot(YourArray(ii+19,1), YourArray(ii+19,2) end hold...

1 year ago | 0

How to record result in a for loop nested in a for loop?

Not sure what the point of alpha is, but here’s something to save your data. clc clear for i = 1:5 for j = 1:1...

1 year ago | 0

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Legend when plotting with while

This may work. clc clear all T = readtable('Book1.xlsx'); Time=T.DateTime; ColumnYouNeed = input('Which varia...

1 year ago | 0

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Problem with sliders and plot (App Designer)

I think this is what you mean but let me know if I’m wrong. % Callbacks that handle component events ...

1 year ago | 0

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My program isn't plotting anything

I’m assuming your variables a and b are actual values. If not, it will obviously give an error that a and b are undefined. I thi...

1 year ago | 0

I get the error "Undefined function 'symsum' for input arguments of type 'double'. while solving the equation given below.Please help me.

I ran the script below and got a very large answer. You should check my code/output as there may be a mistake (using matlab mobi...

1 year ago | 0

| accepted

Copy parameters from UIAxes to other Axes in external figure app designer

Check Adam Danz’s answer in the link below to get started https://www.mathworks.com/matlabcentral/answers/281318-how-can-i-save-...

1 year ago | 0

| accepted

How to use savefig in app-designer?

I’d use the function created by Adam Danz found on https://www.mathworks.com/matlabcentral/answers/281318-how-can-i-save-a-figur...

1 year ago | 1

| accepted

Graphing multiple graphs in one figure

%Use hold on and hold off clear clc xx=transpose(1:10); hold on for hh = 1:6 randvec...

1 year ago | 0

How to generate and plot a 3D structured mesh in MATLAB?

I’m not sure what all you wanted to do. Is this what you were looking for? clear clc W=8; % Width ...

1 year ago | 0

How can I create a 3D plot by using the surf?

You could get better resolution if you had more points in your var_disp and ave_disp vectors. I suppose you could interpolate, b...

1 year ago | 0

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Invalid syntax at num2str. A'(' might be missing a closing ')'

disp([' (a) tanh(e)=',num2str(tanh(exp(1)))])

1 year ago | 0

2D plots : Hovering and index information

https://www.mathworks.com/matlabcentral/answers/497552-hi-when-you-create-a-plot-and-hover-over-a-data-point-without-pressing-an...

1 year ago | 1

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How to move y-axis number on the left side ?

ax = gca; ax.YAxisLocation = "left";

1 year ago | 0

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how to add a new entry for legend while running a multiple plot

x=1:10; hold on for ii=1:3 y=ii.*x; fig1 = plot(x,y); legvec{ii} = sprintf('plot for run %d',ii); end legend(...

1 year ago | 0

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Not enough input arguments

Is this what you mean? y = 2*cos(2*pi*((f1+f2)/2)*t)*cos(2*pi*((f1-f2)/2)*t);

1 year ago | 0

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How to combine two variables in a table

You should rename your value called mean as something that is not already a function name. meanval = {1,2,3,4,5,6,7,...

1 year ago | 0

how do I write variance in percentage?

You would probably use the coefficient of variation. Coefficient of variation is the standard deviation divided by the mean and ...

1 year ago | 0

x greater than y by some value

if x - y > 10 disp(’greater than 10’) else disp(‘less than or equal to 10’) end

1 year ago | 0

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Limiting mouseclick event to current Axes in App Designer

Find the pixel locations where you want the function to activate. If it’s a rectangle, then that’s easier. You’ll have four poin...

1 year ago | 0

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How to merge several 2D plots and make a single 3D plot if vector lengths are not same.

Can you provide some of your data? That way, we could get a better idea of the min/max values for x and y and determine if inter...

1 year ago | 0