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Can a software company use the thingspeak API to setup a user's channel for them.
If you're asking from a technical standpoint, I haven't tried this myself but I believe you should be able to create channels us...

4 years ago | 0

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Plotting image and data changes y-axis direction. Why and how to fix this?
From the "More About" section on the documentation page for the image function: "The image function has two versions, the high-...

4 years ago | 0

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how to make symbolic variable by loop as we want
so, can i assume that in matlab there is no method for creating symbolic variable by only known is no of variables. Sure there ...

4 years ago | 0

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Saving to .mat without additional struct.
When you save the struct array, specify the '-struct' option. This will save each of the struct fields separately in the MAT-fil...

4 years ago | 1

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This supposed solver does not work. What am I missing?
From the fact that the error is being thrown on line 1 of your file, I'm guessing you haven't defined the variable x. The messag...

4 years ago | 0

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Problem with splitapply (bin averaging)
If I'm correct, if you called histcounts without ignoring the first output argument that output argument would contain a 0, indi...

4 years ago | 1

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I want to integrate this function but I keep getting errors
yy = @(aa) integral(cos(aa)/sqrt(cos(o)-cos(aa)),aa, pi/2); When you call this function handle it will attempt to evaluate the ...

4 years ago | 0

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Unrecognized function using PDE toolbox
According to the addCell documentation page, the input arguments you pass into addCell must be a "3-D geometry, specified as a D...

4 years ago | 0

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How to understand and apply arrayfun - getting intuition beyond the documentation.
Here's your original code: X = [1, 12; 1, 13; 1, 12; 2, 4; 2, 4; 2, 4; 3, 9; 3, 9; 3, 9]; L = X(:,1); U = unique(L); % Define...

4 years ago | 1

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I want to Access value by using its key , the login should to be like if user enter key1 it should match with key1 keyword from excel sheet and give value_1 as output.
Take a look at the containers.Map function.

4 years ago | 0

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Generate an 8-day datetime array between 2010 and 2021 which resets the 8-day count at the beginning of each year
Let's start with a row vector of January 1sts. Jan1st = datetime(2010:2021, 1, 1); We want to compute a vector of days for eac...

4 years ago | 0

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Answered
extract data from one day from a timetable
Use a timerange. First generate some sample data with datetime values representing random hours in July 2022. rng default % for...

4 years ago | 1

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Matrix formulation with matrix multiplication and raising to N-power
If your B is in fact a 2-by-1 vector: B = [0.005; 0.1] then you cannot concatenate it horizontally with 0 as they don't have t...

4 years ago | 0

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How to make assert() debug break?
Based on Jan's description (I have not read the code) you'd also want to think about what this does if you call assert1 at the M...

4 years ago | 1

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100% CPU usage on Windows 7 for R2022a
The System Requirements page lists the supported Windows operating systems for release R2022a as Windows 11, Windows 10 (version...

4 years ago | 0

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How to create a surface from node coordinates and face indexes?
Does the trimesh function do what you want? Alternately take a look at the griddata function and then the isosurface or contour...

4 years ago | 0

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How to return empty vector of figures
Preallocate the array using gobjects. F = gobjects(1, 3) F(2) = figure; F To check if an element has been filled in, ask if ...

4 years ago | 0

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Data splitting and saving to different variables
Can you dynamically create variables with numbered names like x1, x2, x3, etc.? Yes. Should you do this? The general consensus ...

4 years ago | 0

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sometimes datastore read() function reads number of lines different than 'readsize' parameter
If you look at the description of the ReadSize property of the tabularTextDatastore class, the sentence describing the behavior ...

4 years ago | 0

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Install Matlab engine for Python on MacBook M1
If you are using the MATLAB R2022a Native Apple Silicon Platform Open Beta, one of the limitations listed on that page is "MATLA...

4 years ago | 0

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When using ind2rgb, how do you use map as output argument?
The map input to ind2rgb is the colormap for the image. The first input to ind2rgb represents indices into that colormap. So for...

4 years ago | 1

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Using graph theory inside Simulink
Some of the "Graph and Network Algorithms" functions in MATLAB support the C/C++ Code Generation extended capability, as you can...

4 years ago | 0

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Why 'NaT' (class: datetime) does not work with find function?
The reason why isnat works and your == call did not is because NaT is like NaN -- it is not equal to anything, not even another ...

4 years ago | 2

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Create array of results for summation where limits are not the same
I don't have your data so I can't run the code, but something along these lines should work. I use groupsummary to summarize (in...

4 years ago | 1

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What is a handle?
What's the context in which you see that term? There are at least three different meanings for that term, though two of them are...

4 years ago | 3

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Error creating structure field names with a for loop
The first character of a struct field name must be a letter. Later characters can be digits, but not the first one. You could s...

4 years ago | 1

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Index exceeds the number of array elements - Error message
x = 1:10 y = reshape(x, 2, []) m = mean(y, 1) % mean of each column; "collapse" dimension 1 to size 1 by taking the mean m2 =...

4 years ago | 0

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create index to graph and find isomorphism
Can you dynamically create variables with numbered names like G1, G2, G3, etc.? Yes. Should you do this? The general consensus ...

4 years ago | 0

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Answered
Create Structure from cell array with dot separation in string
s = 'em1500.eta_t.x'; f = split(s, '.') At this point you may want to use matlab.lang.makeValidName to ensure the field names ...

4 years ago | 0

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Create a time array
val=['17-10-58_086' '17-11-09_923']; val = string(val); Convert the string array val into a format the duration function ...

4 years ago | 1

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