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How to save file on chosen path in app designer?
can you just simplify and use uiputfile()?

4 years ago | 0

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Implicit Boundary Value Problem
Ok, so looks like what you are after is solving a DAE that has BCs at more than one boundary. Docs say it is ode15s and ode23t ...

4 years ago | 0

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Answered
Select mxm matrix from mxn matrix and solve systems of linear equations
Does this help with first problem: https://www.mathworks.com/help/matlab/ref/nchoosek.html Second problem, maybe make tolerance...

4 years ago | 1

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Answered
Reduce time execution in a real time serial data reading
If instead of a loop, you use a timer (https://www.mathworks.com/help/matlab/matlab_prog/use-a-matlab-timer-object.html), you mi...

4 years ago | 0

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how to generate text file from generated output
fprintf() accepts as 1st argument a file identifier for a file opened with fopen(). fid = fopen("somefile","w") fprintf(fid,...

4 years ago | 0

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App designer: Enable mouse scroll to change value on slider
Take a look at the UIFigure's following properties: WindowScrollWheelFcn WindowKeyPressFcn WindowKeyReleasedFcn If you need ...

4 years ago | 0

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Answered
Trying to identify directions of overlapping lines in images, at my wit's end
Have you looked into radon transforms? You might get some "signal" at the 45 and 135 directions for the right image... If these...

4 years ago | 1

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Answered
Comparing terms in a character array
If it is truly a "character array" and you want exact matches only, you can use the findstr() command, which will return empty i...

4 years ago | 0

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Answered
Web app system command
To the question: Also, an other question just came to my mind: what's the best practice to store permanent data and access them...

4 years ago | 0

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Getting data from the figure in appdesigner
Here's an example where I used the data cursor's update function itself to collect the coordinates and feed directly into your a...

4 years ago | 2

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reshaping multi dimensional array and central difference method
Based on your example lines, you seem to have the further simplification that your delta x and delta y are uniform (in your exam...

4 years ago | 1

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Answered
Filter a table based on date (Error using tabular/dotParenReference (line 95) Unrecognized row name '01/00/0000'.)
The second way is almost right, but when you use () on testtable, you are extracting a subtable, rather than the datetime array ...

4 years ago | 1

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Answered
Using a image variable from one GUI function to another in AppDesigner
Create a property for your app class to hold the image. You appear to be using appdsigner. In appdesigner's code view, on the l...

4 years ago | 1

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Answered
Plot a curve with its derivatives
As far as I know, matlab's plot function will draw a straight line (linear interpolation) between adjacent points. For your cas...

4 years ago | 0

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Generate matrix of precise length and in ascending order
This seems to work, and is less wasteful RowSum = 10; NCols = 4; NRows = 70000; A = randi(floor((RowSum-2)/(NCols-2)),[NRo...

4 years ago | 0

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How do i create a multi-colour histogram using excel data?
I suspect your yA, yB, yC are column vectors, which you are trying to horizontally concatenate with scalars. You can probably fi...

4 years ago | 0

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How plot a figure like this attached figure?
It's because mesh expects z-data to be actual coordinates in z, but mesh (and surf) will accept a 4th argument for color N = 50...

4 years ago | 0

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Using trapz doesn't work
F is of size 1x1, not 1x24000

4 years ago | 0

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Painters renderer results in jagged edges
What happens if you set "FaceColor" to "interp" (default is "flat") on the surf object? It fixes the jagge edge for me (2017a or...

4 years ago | 1

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Answered
Solve system of boundary value problem (a singular Jacobian encountered)
If you know the problem is solvable (HW, e.g.,), then singular Jacobian usually means something is wrong with your equations or ...

4 years ago | 0

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determining order of accuracy
This is not a matlab question but a numerical analysis problem. Since someone already generated the results for you, it's a matt...

4 years ago | 0

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Answered
Branching a WindowButtonDown function
If you don't mind using undocumented features, I have had success using the standard axes() object instead of uiaxes(), because ...

4 years ago | 0

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Proper reading of .txt
Just use readtable()? Looks like every station will have already-aggregated results (hourly vs daily for the same station, same ...

4 years ago | 0

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Answered
ODE solver: how to integrate a system with a vector of parameters?
Are you just looking for solving the ODE as many times as you have different values of V? t = [0 400]; y = [0.004 0 0]; alpha...

4 years ago | 0

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Answered
Limiting mouseclick event to current Axes in App Designer
Cameron's idea of calculating the axes position within the figure position should work, and it is the only way with currently do...

4 years ago | 0

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How to access left bottom pixel in image using (0,0)?
If you just want to translate the unflipped image's row index to be translated into a different index as if you were indexing th...

4 years ago | 0

Answered
How to access left bottom pixel in image using (0,0)?
Since you seem to want to "index" by (0,0), perhaps what you are looking for is assigning real (x,y) coordinates to the image an...

4 years ago | 0

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How to access left bottom pixel in image using (0,0)?
How about if you flip the image? % if the image is in I I = flipud(I)

4 years ago | 0

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how make the plot continuous ?
If I understand correctly, you want the "plot" command to produce a vertical "line" at x=6. To do this, you could duplicate the ...

4 years ago | 0

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Answered
this code is taking a lot of time to run,
If all the files have the same format, I have seen big improvements using detectImportOptions() on the first file re-use those o...

4 years ago | 0

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