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Techniques of common subexpression elimination, disorganization in MATLAB, etc..
If you want to evaluate simple expressions like a^2+2*a*b+b^2 then the optimal CSE is to first evaluate t1=a+b and then t2=t1^2...

2 years ago | 0

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How can I get an outline (window) of my script?
With the Live Script open in the Live Editor, open the Live Editor tab in the Toolstrip. If you click on the downward pointing t...

2 years ago | 1

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find similar numbers within a matrix
If you want to find a row of numbers that's close to (but perhaps not exactly equal to, due to roundoff error) another row of nu...

2 years ago | 0

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How to create N-tuples in Matlab?
If you're using release R2023a or later of MATLAB you could use the combinations function to do this. v = [0 1]; c = combinati...

2 years ago | 1

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retime timetable based on custom definition of year
Based on your description I suspect you're calling retime with the second input being 'yearly'. As far as I'm aware there's no o...

2 years ago | 0

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I need help with a morphing program.
My code keeps giving me errors The full and exact text of those messages (all the text displayed in orange and/or red in the Co...

2 years ago | 0

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Use variable to find column in table
Note that as shown on the documentation page linked to by @Stephen23, you can access data in a table using variable names, logic...

2 years ago | 0

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My gradient function wont update in my for loop
Changing the value of a variable included in an anonymous function when it was created does not change the value the anonymous f...

2 years ago | 0

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How i can solve this quadratic eigenvalues problem
Just to check, what do you know and what are you trying to find? I assume you know H, J, and R (which I assume is the "constant"...

2 years ago | 0

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Automatically change the input arguments of function handles
So you want to fix some of the input arguments while leaving others alone? Let's take a simple example function handle. f = @(x...

2 years ago | 0

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R2024a Prerelease will not start due to OpenGL Startup Plugin Fatal Error
Please contact Technical Support directly using this link and work with Support to determine the cause of this error.

2 years ago | 2

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Is there a method to combine some functions into a single .m file?
As the title shows, I wonder in Matlab, is there a method to combine several useful functions into one single .m file so the tot...

2 years ago | 1

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How can i use ltpda startup nowadays? I think in old version of matlab work but in 2023 it shows , it cant recognize, is there any solutions or options?
LTPDA Toolbox isn't a MathWorks product. If you have not installed it, you should use the instructions available from the page t...

2 years ago | 1

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Finding strings with common character
Read the data into MATLAB, split it into separate words if necessary, then use startsWith to determine which words start with yo...

2 years ago | 1

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Add variable names to figure legends
So do you have variables named beats_Local_var1_W1, beats_Local_var1_W2, beats_Local_var1_W3, etc.? If so can you dynamically c...

2 years ago | 0

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can we apply ode45 on .mat file
Okay, so based on the keywords in the comment a quick Google search found this page. So is this your x matrix or your matrix, u...

2 years ago | 0

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Generating Phase Portrait of ODE system
I would specify an OutputFcn in your call to the ODE solver, as described on this documentation page for the odeset function. Th...

2 years ago | 0

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When calling a class (say, to convert types), are we calling a function?
For example, what is the behind-the-scenes difference between calling sin as a function, and calling logical as a function? N...

2 years ago | 3

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The function is debugging too long...
if(xold-(xold-1)<=tolx), break, end%&(abs(y)<=toly Assuming that xold is "nice" (no infinities, not large enough for xold-1 to ...

2 years ago | 1

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Point array to generate meshgrid
I don't believe pcolor allows you to create elements with more or fewer than 4 sides. What I think you want to do is either crea...

2 years ago | 0

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How to perform elementwise multiplication between two matrices with different size or summation between two matrices with the same size
Let's look at the sizes of the arrays in question. f = 1:10; x = -22:1:22; y = -22:1:22; [u,v] = meshgrid(x,y); whos f x y ...

2 years ago | 1

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why can't I reproduce my random numbers
I suspect you think these two lines of code do something different than what they actually do. therng1 = rng(1); therng2 =...

2 years ago | 2

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Upgraded Matlab from 2022b to 2023b and I've noticed a floating point error
As others have said it's impossible to give a firm answer with the limited amount of information you provided. Some possibilitie...

2 years ago | 1

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Is there anyway to increase the calculation speed of this sqrt integral2 without loosing accuracy?
Let's look at what the surface you're trying to integrate looks like. g = @(xx,yy)sqrt((xx.*1.103872343207215e+1-yy.*3.60554487...

2 years ago | 1

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Why does argmin index of NaN array have a value of 1 and not NaN?
If the second output from min in the case where the input is all NaN values were NaN, every single call to min that wanted to us...

2 years ago | 0

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How Can I Calculate Displacement Of An Object (it can be a point on object) Out Of A Video Record
So you want to track an object through the video? I believe several of the examples found by this search may be relevant, partic...

2 years ago | 0

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what does A/b mean when solving matrix Ax=b
The \ operator (mldivide function) solves for x in A*x = b. The / operator (mrdivide function) solves for x in x*A = b.

2 years ago | 1

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How to find leaves in minimal spanning tree
It has been a while since this question was asked, and this answer wouldn't have worked at the time it was first asked, but you ...

2 years ago | 0

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Access property of class object found by "whos"
So when you use an instance of this class, you want that instance to check if it was last updated too long ago? Why not just sto...

2 years ago | 0

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Unit/integration tests that involve closing/re-opening handles to objects
What you're describing sounds like you could easily fall into Interacting Tests, a category of Erratic Tests. If you had some w...

2 years ago | 1