Answered
Good day how many sms can i use per day or per year using thingspeak for free?
From the FAQ page: 1. Can I use ThingSpeak™ for free? Commercial users may sign up once for a time-limited free evaluation. Al...

5 years ago | 1

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Standalone Desktop Apps in App Designer
I am able to reproduce what you are seeing. In the process, I've learned a couple things. First, the answer. Symbolic function...

5 years ago | 0

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how to detect and remove outliers?
You can interactively explore many of the options using the Clean Outlier Data task in a live script. Another option is to appl...

5 years ago | 0

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Standalone Desktop Apps in App Designer
It is possible to create an app that can run on a system that does not even have MATLAB installed, so the errors you report seem...

5 years ago | 0

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Index exceeds the number of array elements (1).
Follow the steps provided in this answer to determine the issue.

5 years ago | 0

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Answered
Unable to load mat file data in Matlab App
The variables in your mat file are getting loaded into a structure. You have named this structure tempX. In order to access the ...

5 years ago | 0

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Why do I get the error Dimensions of arrays being concatenated are not consistent?
I'm going to guess it's because you are trying to combine 2+ arrays that have a different number of columns. Specifically, when ...

5 years ago | 0

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Interpolating data from the graph
Ok, since you have all the data used to create the plot, you will just use the X and Y values as inputs to the interp1 function....

5 years ago | 0

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Why it gives error if we set lb=[0 0 0 0], ub=[10 10 pi pi] instead of lb=0 and ub=pi?
From the description of SPBO % variable = number of your variables ... % mini=[mini1,mini2,...,minin] where mini is the lower...

5 years ago | 0

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import with Excel problem
Your code is trying to load an xls file, but your file is 'xlsx'. [IndRefr,IndRefr_names]=xlsread('Index_of_Refraction_library2...

5 years ago | 0

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Answered
Selecting an option in the drop down menu that displays different edit fields
Yes. I would first create all 4 edit boxes, but set their 'Visible' property to 'off'. Then, in the callback of your dropdown me...

5 years ago | 0

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Answered
Plotting a periodic signal
You define T_1, but never use it in your code. I don't know what your result should look like, but the most obvious place to inc...

5 years ago | 0

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RKF array indices error
y_RKF(0) = 1 creates an error because MATLAB does not use 0-based indexing. All indexing must use positive integers (1, 2, 3...)...

5 years ago | 1

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How to convert a .ptn EEG file to .mat?
See this answer in the post "How to read a .PTN file". The solution was found at this link: https://www.researchgate.net/post/H...

5 years ago | 0

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How to perform integration over a complex path in Matlab?
I would probably determine the area of the square (lxw), then figure out what percentage of the square is white (white pixels/al...

5 years ago | 1

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Answered
Make marker dots in plot be two semi-circles each filled with different color
This is not built in functionality, at least not that I'm aware of. You can find a list of supported markers here. You could cr...

5 years ago | 3

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How to generating surface without plotting?
If I look at the first example on the surf documentation page, it first creates X, Y and Z, then uses surf to plot/create the su...

5 years ago | 0

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csv file import with exponential notation
Here's how I would do it. %%read txt file with force measurement, save datevec opts = detectImportOptions("CSV-file.csv","Num...

5 years ago | 1

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incorrect number of input arguments
You have too many inputs to title, just like the error message says. You are likely trying to create a title and subtitle, but...

5 years ago | 0

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TicTacToe printing new move - error handling
My suggestion would be to put the user input inside a while loop that continues executing until the user selects a open spot. Th...

5 years ago | 0

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Calling function in the same script to plot graph
You would need to first call the function and capture its output in a variable named z. in = ???; z = Fun(in); plot(N_iter,z)...

5 years ago | 0

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Answered
Develop a GUI: from uploading data to save an output
It's absolutely possible. The best place to get started is the Getting Started with App Designer page. Once you have watched tha...

5 years ago | 0

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Any way to subset data from a single Channel (Eg. using thingspeakread) in a MATLAB Visualisation?
If you have all the data in a single matrix, then the plot function will treat each column as a separate series. Does this get y...

5 years ago | 0

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Matlab in finance (log returns)
There are a couple examples in the documentation you could try to follow. Here's the first one I found: Estimate Models Using a...

5 years ago | 1

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How to create matrices from a table and extract specific data from it to make plots?
As Adam told you in your previous post, you can just work with the data in the table. No need to extract it somewhere else. See ...

5 years ago | 0

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I trying to get a 3D plot of my Objective function obj_CMSAFghana and variables H and tilt but I am getting this error Error: using surf (line 71) Z must be a matrix, not a scalar or vector. Error in MY_PLOT (line 48) surf(H,tilt,z)
The error mesage says it all. To create a surface, Z must be a matrix. It is currently a vector. As a hint, you are only captur...

5 years ago | 0

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How to import a specific column from a matrix that is looping through a directory?
Use indexing to tell MATLAB where to store the results. You can find an example in the for loop documentation. When importing t...

5 years ago | 0

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List dialog - Prompt text overlapp
From the documentation, "If you specify the prompt as a character vector that is longer than the width of the dialog box, the ...

5 years ago | 0

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Answered
Surface plot positive output and corresponding combination of variables only
What about setting the F values that are <=0 to NaN? length_L = 0.0001:0.0001:0.005; length_R = 0.0001:0.0001:0.005; [X, Y] =...

5 years ago | 0

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Answered
Change TITLE font size of the message box.
I'm pretty sure you cannot format the text in the title bar. The formatting here is set by the operating system. You can set the...

5 years ago | 0

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