Risposto
Only version 2026a appears available for download as a trial. I want version 2025b
If you Contact Sales, you might be able to arrange a trial version of your choice with them directly.

6 mesi fa | 0

Risposto
How to use fft on the continuous time signal
Here is the proper way to set up the time and frequency sampling axes: tau = 1*10^-9; % tau %Set up frequency and time sampl...

6 mesi fa | 0

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Risposto
textscatter example, and behavior, is mysterious
Here's an alternative, whose behavior you might like better: rng("default") n = 11; x = rand(n,1); y = rand(n,1); str = str...

6 mesi fa | 0

Risposto
Can you get matlab to add a really small number to a big number and retain precision
Can you get matlab to add a really small number to a big number and retain precision You can, but it is better to just reorgani...

6 mesi fa | 1

Risposto
Why is Preallocating arrays important in MATLAB, and how does it improve performance compared to dynamically growing arrays?
When it is acceptable to avoid preallocation Looping backwards is an alternative to pre-allocating. You're not really "avoidin...

6 mesi fa | 0

Risposto
Does dicomreadVolume automatically rescale the image?
You should manually apply it.

6 mesi fa | 0

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Risposto
When plotting 3D graphs in MATLAB, can the x and y axis labels be made flush with the x-y plane, as shown in the figure below?
There are some File Exchange compositions that seem to be able to do it, e.g., https://www.mathworks.com/matlabcentral/fileexch...

6 mesi fa | 0

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Risposto
How to add a shared ylabel on the right hand-side of a figure, when combining tiledlayout and yyaxis?
One way. t = tiledlayout(4,1); for i = 1:4 nexttile title("Tile"+i) yyaxis left plot(rand(1,10)) ...

6 mesi fa | 1

Risposto
trainnet function - randomness and repeatability
In addition to random initialization of the Learnables, as mentioned by @Steven Lord, you are using the default Shuffle setting,...

6 mesi fa | 0

Risposto
Eigendecomposition not fully utilizing all cores on M1 pro, matlab 2025b
Perhaps bundle the jobs together using pageeig?

6 mesi fa | 0

Risposto
Use ginput in a datatip
There is imdistline, but it requires the Image Processing Toolbox.

6 mesi fa | 0

Risposto
Given an observer looking to the center of an ellipsoid, how can I determine the distance through the ellipsoid if none of the axes are aligned with this look angle?
Given an observer looking to the center of an ellipsoid After converting to ECEF coordinates, xc=[xc1;xc2;xc3] ...

6 mesi fa | 0

Risposto
How can I fit a curve with three independent variables in MATLAB R2024b?
lsqcurvefit from the Optimization Toolbox has no restriction on the number of independent variables (or on bounds), but you will...

6 mesi fa | 0

Risposto
Matrix 10x10 with same number in each row by column.
M=repelem(1:10,10,1) M = ceil( reshape(1:100,10,10) /10 ) M = fft(1:10,10,1)

6 mesi fa | 0

Risposto
How to use the nonlinear least square fitting to fit a transfer function？How to improve the fitting accuracy
Assuming the things @Catalytic pointed out above were mistakes, and also if Y is supposed to be the impulse response, then the f...

6 mesi fa | 0

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Risposto
How to use the nonlinear least square fitting to fit a transfer function？How to improve the fitting accuracy
Your initial point, T0 = ones(10,1); %% intial values looks very arbitrary. You should devise a smarter initial guess. Aside...

6 mesi fa | 0

Discussion


Shouldn't max([])=-inf ?
Matlab seems to follow a rule that iterative reduction operators give appropriate non-empty values to empty inputs. Examples inc...

6 mesi fa | 0

Risposto
Why Does polyval Return Zero When the Coefficients are Empty?
For non-empty A and B, we have the general relation, polyval([A,B],z)=polyval(A,z)*z^numel(B) + polyval(B,z) Extending this to...

6 mesi fa | 0

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Risposto
"Index exceeds 37" when 35 variables?
The root cause, as I commented above, is probably that you've attempted to construct a fit type with 3 independent variables, wh...

6 mesi fa | 2

Risposto
Dependency analyzer refuses to work
Do you really need all the features of the app environment for what you are doing? You can analyze dependencies programmatically...

6 mesi fa | 0

Risposto
Best way to relabel axis as pi for trig functions.
x = linspace(0,2*pi,200); y = sin(x); plot(x, y) ax=gca(); ax.XTick=0:pi/2:2*pi; ax.TickLabelInterpreter='latex'; ax.XTi...

6 mesi fa | 2

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Risposto
Efficient overlapping block processing with nested sub blocks (similar to im2col with stride)
If the reordering is something you want to repeat on multiple matrices of the same size and block structure, then you can use yo...

6 mesi fa | 1

Risposto
obtain an equation for the curve joining maximum points, using an appropriate interpolation or “curve fitting” process???
I think you are being asked to derive the equation for the maxima by hand -- an easy calculus exercise since the trajectories ar...

6 mesi fa | 0

Risposto
identifying shapes in image
See this FEX download, https://www.mathworks.com/matlabcentral/fileexchange/181422-fit-polyshape-to-objects-in-image?s_tid=prof...

6 mesi fa | 0

Risposto
SNR goes down as noise filtering is increased.
Depending on the data you provide, the theoretical assumptions of a Wiener filter (signal stationarity, white noise, etc...) ar...

7 mesi fa | 0

Risposto
Odd behavior of unstack in Matlab2025b
The change occurred in R2020a and was documented, https://www.mathworks.com/help/releases/R2024b/matlab/ref/table.unstack.html?...

7 mesi fa | 0

Risposto
Can I hade the Figure toolbar without hiding the Axes toolbar?
figure(Toolbar='none')

7 mesi fa | 0

Risposto
Nested tiledlayout: can parent tiles have different widths depending on number of child tiles?
It might be better to us e a grouped bar plot, e.g., Y = [5 3 7 0 0; 6 4 2 1 0; 4 8 5 1 6]; gradientGroupedBar...

7 mesi fa | 0

Risposto
How to change the arrangement of plots in a tiled layout even if the plots are not empty?
One way: tl=tiledlayout('vertical'); for i=1:3, nexttile; plot((1:5)+10*i); title(string(i)); axis square; end tl=transpos...

7 mesi fa | 0

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Risposto
How do I perform Image segmentation in an RGB image using pattern?
load Image [r,g,b]=imsplit(I); lev=multithresh(r,2); L=imquantize(r,lev); H=bwareafilt( imfill(L==2,'holes') ,1) ; BG= ...

7 mesi fa | 1

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