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Marco Riani


Last seen: 1 day ago |  Active since 2019

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Full Professor of Statistics (since 2006), University of Parma, Italy. Director of the interdepartmental center of robust statistics for big data (Ro.S.A.) of the University of Parma since 2016. He is author of more than 150 publications and two books published by Springer Verlag New York. His main research interests are robust statistics (regression, multivariate analysis and classification)

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Answered
Organization Sign-in portal not popping up
After spending one hour and trying different solutions I found that this is indeed a known issue Why do I get a blank SSO scree...

2 months ago | 11

Answered
Ranking vectors from highest to lowest including repeated ranks.
Hi William, I did it using a loop. Please let me know if the code below is what you wanted x=[0.4 0.1 0.1 0.2 0.1 0.05 0.05]; ...

1 year ago | 0

Answered
Find Optimal Number of Cluster using Silhoutte Criterion from Scratch In MATLAB
x =[ [0.1 0.2 0.15 0.2 0.21 ] 1+[0.1 0.2 0.15 0.2 0.21 ]]; y =[ [0.1 0.2 0.15 0.2 0.21 ] 1+[0.1 0.2 0.15 0.2 0.21 ]]; X = [x...

2 years ago | 1

| accepted

Question


Percentage of Parent Row Total or percentage of Parent Column Total in new function pivot
I wonder if it is possible in the new function pivot (MATLAB prerelease 2023A) to produce a pivot table which shows values in pe...

2 years ago | 1 answer | 0

1

answer

Answered
DBSCAN algorithm and Rand index
Function RandIndexFS of the FSDA toolbox does what you asked. For a preview of the documentation of this function please see h...

3 years ago | 0

Answered
Retime data aggregation for ID
I think in this example it is unnecessary to use retime. I would proceed as follows. Time1=char(Time); Time2=Time1(:,4:end); ...

3 years ago | 2

| accepted

Answered
To this code I want to add the property that every new turn renderes a new color in the plot
Hi Robert, The above is a preview (I hope this is what you asked) Here is the code (done for example for the case nturns=5)...

3 years ago | 0

Answered
How do I find which element of the matrix was used for this equation?
Hi, just call max with two output arguments Please let me know if rowWithMaximumDifference below is what you want Best wishes...

3 years ago | 1

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Answered
Nested for loop vectorization
% Hi, in your code p is not defined. I assume it is a scalar % If you want to avoid the loop the answer is % Mat=exp(-theta*...

3 years ago | 0

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Answered
Import arrays in a matrix
% Please let me know if the code below is what you are looking for a=[1;2;3;4;5]; b=[6;7;8]; c=[9;10;11;12;13;14]; maxLeng...

3 years ago | 0

Question


Set default documentation location programmatically in R2021A
Starting in R2021a, when you run MATLAB with an internet connection, the Help browser displays the web documentation by default....

3 years ago | 1 answer | 0

1

answer

Answered
Eigenvalues (eig) and singular values (svd)
Hello Gabri, the answer in short is: "the difference is due to numerical errors". For example in the normal case % Normal cas...

4 years ago | 0

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Answered
How can I plot with different markers, linestyles and colors in a loop?
Please let me know if the code below helps clear close all; clc; n = (1:6); F = rand(7,6); figure Markers={'o' '+' '*' '....

4 years ago | 1

Answered
Trying to solve linear system of equations into matrix form error
% eqns must be linear in vars. % Specify vars as follows (for example). vars=[m1, m2, w1, w2, w_dot0, w_dot1]; [A,B] = eq...

4 years ago | 0

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Answered
Define a name of the variable using the value of other variable
Please let me know if I understood correctly your question. Month={'January'; 'January'; 'February'; 'February'}; set_of_mon...

4 years ago | 0

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Answered
how to adjust the font size of RowLabels and ColumnLabels of HeatMap
h.FontSize changes the FontSize of all xlabels, ylabels and the numbers inside the heatmap. In order to change the FontSize ...

4 years ago | 0

Answered
I want to solve optimization problem but when run it notifide : Undefined function or variable optimvar, how to fix it ?
You need to install the Optimization toolbox

4 years ago | 0

Answered
Matlab plot ; How to plot figures like the file attached below
Using function heatmap Create heatmap chart - MATLAB heatmap (mathworks.com)

4 years ago | 0

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Answered
Behavior of "unique" with mixed complex numbers
Please let me know if I understood correctly your qestion Atest=[-12.9753 - 0.8003i; -12.9938 - 0.4003i; ...

4 years ago | 0

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Answered
FInd distance between surface coordinates without repetition
Thanks for the clarification. Please let me know if the code below is what you wanted % Define x and y x=1:4; y=2:5; lx=leng...

4 years ago | 0

Answered
FInd distance between surface coordinates without repetition
If x and y are x=[ -32.8778 -10.8573 11.3161 33.4895]; y=[ -32.8778 -10.8573 11.3161 33.4895]; the distance m...

4 years ago | 0

Answered
Having trouble with legend
Hi Carly in your code just replace legend('Data',strLegend(k)); with legend({strLegend{k},'StringYouLike'}) Best Marc...

4 years ago | 0

Answered
Empty sym: 0-by-1
First of all it is necessary to replace [ ] with ( ) in your equation. h1= .5 - (.25 - (1/4*(R^2))*((R^2)-.0625))^(1/2) == ...

5 years ago | 0

Answered
How to access names of pictures in a file?
Hi, please let me know if the code below works. clear clc; % location = folder in which your template images exists locat...

5 years ago | 0

Answered
How to get an average of two cells in specific conditions?
Hi GDT, please let me know if the code below solves your problem. x = [ 23.50128 22.0385 18.058 35.71267 25.44106 1...

5 years ago | 0

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Answered
Attempting to get fminsearch to work. Likely a silly mistake.
Dear Gus, The MATLAB sintax to make fminsearch work is L1 = 0.0337; % Length of arm 1 (Rough guess) L2 = 0.0166; % Lengt...

5 years ago | 0

Answered
Least-median-of-squares Fitting
Least-median-of-squares fitting is implemented in function LXS of the FSDA toolbox. https://www.mathworks.com/matlabcentral/fil...

5 years ago | 0