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] ...

circa 2 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...

circa 2 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)

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

circa 2 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...

2 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?...

2 mesi fa | 0

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

2 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...

2 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...

2 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= ...

2 mesi fa | 1

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Risposto
Curve fitting confidence intervals - discrepancy in manual CI plot and predint plot
Also, what is predint and how is this different from manually plotting the CIs as I did? predint predicts an uncertainty inter...

2 mesi fa | 0

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Risposto
How to preserve the 3d plot box, when changing patch visibility.
Here's something a little fancier, and maybe more robust. It captures (and reasserts) all relevant properties of the plot perspe...

2 mesi fa | 1

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Risposto
How can I quickly find the eigenvalues and eigenvectors of a matrix with a special structure using high-precision calculations?
@Torsten has hinted, based on your earlier posts, that the eigenvalues of M may occur in distinct and purely imaginary conjugate...

2 mesi fa | 0

Domanda

Indexing behavior of table properties
Suppose we have a table such as, T=table(rand(3,1,'single'), randi(5,3,1)) What is it that allows the VariableTypes to be in...

2 mesi fa | 1 risposta | 1

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risposta

Risposto
How to preserve the 3d plot box, when changing patch visibility.
Using axis() twice, we can both capture and reassert the axis limits, axis(axis) This also then converts all X,Y,ZLimModes to ...

2 mesi fa | 0

Risposto
How can I force a .txt export
Instead of, if length(file) < 4 || ~strcmpi(file(max(1,end-3):end), '.txt') file = [file '.txt']; end use ...

2 mesi fa | 0

Risposto
Extracting from cell arrays using a nested loop
Do not use a nested loop: clear Data for k=250:-1:1 Data(:,k,:) = Matrix(zapTime(k)-12000:zapTime(k)+75000, 2:end) ); end...

3 mesi fa | 0

Risposto
How to draw the axis in the origin of the coordinate system?
Use export_fig instead, https://www.mathworks.com/matlabcentral/fileexchange/23629-export_fig

3 mesi fa | 1

Risposto
Restore data format from SCB to SSCB after patch embedding
One way is to use a functionLayer.

3 mesi fa | 0

Risposto
Error forming mini-batch for network input
This is not enough to reproduce the error. You haven't provided input images. My guess, however, is that there are some files in...

3 mesi fa | 2

Risposto
Having 'imdilate' function only proceed when there are not a bunch of zero values
Don't use a loop. Use imreconstruct instead

3 mesi fa | 0