Luca Amerio

Politecnico di Milano

Last seen: meer dan 3 jaar ago | Active since 2011

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Professional Interests: Civil and structural engineering

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Generate timehistory from PSD
I'm trying to generate a time-history from a synthetic PSD. My idea (happy to accept other solutions) was to turn the PSD into ...

meer dan 3 jaar ago | 0 answers | 0

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Restore standard interactive axes behavior (callback) when using custom ButtonDownFcn
In the latest MATLAB versions, by default, axes got a very neet degree of interactivity. For example, just doing [X,Y,Z] = pe...

ongeveer 5 jaar ago | 0 answers | 2

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Get position when using uicontextmenu
I'm trying to code an interface that alows the user to perform some actions on a set of points visualized as a scatter plot. To...

ongeveer 5 jaar ago | 2 answers | 0

2

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pyenv function not found
I'm trying to call a python function from matlab. I'm following the instructions found in Undefined variable "py" or function ...

ongeveer 5 jaar ago | 1 answer | 0

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splash screen for compiled application is not hard-coded in the app and can be modified
When launching a compiled application, the app look in the folder it is launched from for a file with the same name of the splas...

ongeveer 5 jaar ago | 1 answer | 0

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Figure toolbar disappears when selecting 3-D rotate
The following code produces a figure without the standard toolbar, but leaving the new "axes" toolbar with the zoom, rotate, dat...

meer dan 5 jaar ago | 1 answer | 0

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Why this bandpass butterworth is unstable (while the corresponding low and high pass are stable)?
I have a signal sampled at 750Hz T = 60; fs = 750; t = (0:T*fs-1)/fs; x = sin(6*t) + 0.1*rand(size(t)); I want to filter ...

meer dan 5 jaar ago | 1 answer | 0

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Question

Apply Frequency Response Function to time series
I have a time series and a (complex) frequency response function . I want to compute the time history obtained applying to ...

meer dan 5 jaar ago | 1 answer | 0

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What `gcbf` stands for?
I never remember the syntax of the gcbf command because I cannot understand what it stands for. gcf stands for "Get Current Fig...

meer dan 5 jaar ago | 1 answer | 0

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Submitted

HDF2Struct
Reads HDF5 files and returns data in a structure

meer dan 5 jaar ago | 6 downloads |

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How to fit a line through this data "smartly" ?
I have the x-y data shown in the figure below (for the curious, it is the logarithm of the amplitude of a Hilbert transform). ...

bijna 6 jaar ago | 3 answers | 0

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image(x,y,A) fails on log axis depending on axis's limits
From the MATLAB Technical Support: ------------------------------------------------------------------------------------------...

meer dan 6 jaar ago | 0

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Apply function (str2double) to each element in a timetable
Hi I have a timetable where some numeric fields are stored as strings and other as 1x1 cell arrays of strings (of char array ...

meer dan 6 jaar ago | 1 answer | 0

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Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

meer dan 6 jaar ago

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slicing an M-by-N-by-3 matrix using an M-by-N matrix of logical values
Hi everybody I have an RGB image as a MxNx3 matrix. I would like to slice it using an MxN matrix of logic values (one for ...

meer dan 6 jaar ago | 2 answers | 0

2

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Question

image(x,y,A) fails on log axis depending on axis's limits
Hi The question is pretty much self explanatory given the following example The following code *works*: figure A = r...

meer dan 6 jaar ago | 2 answers | 1

2

answers

Question

New instance of matlab opening every time I double click a matlab file
Hi Every time i double click a matlab file (*.m, *.mat or *.fig) in an explorer windows, a new MATLAB instance starts, even if ...

bijna 7 jaar ago | 1 answer | 3

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Question

Interactive GUI Patch/Tessellation
Hi everybody I'm trying to design a GUI where the user is able to draw a series of connected patches (a tessellation) over a ...

bijna 7 jaar ago | 0 answers | 0

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Question

MinGW add-on installation fails
Hi I'm trying to install MinGW to compile a .c file. I'm using the Add-Ons menu as suggested by https://it.mathworks.com/help...

ongeveer 7 jaar ago | 2 answers | 3

2

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Solved

calculate PI without using pi function
There are many methods to get the pi(Ratio of circumference to diameter). You should get pi without using the pi function in M...

ongeveer 7 jaar ago

Question

Get maximum number of outputs from anonymous function
Hi everybody. I would like to call a function from within another function. The problem is that i don't know a-priori the numbe...

ongeveer 7 jaar ago | 2 answers | 0

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Submitted

tabbedFigure(parentFig,tabName,source)
Creates a new tabbed figure window or adds a new tab to an existing one.

ongeveer 7 jaar ago | 1 download |

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Neural network with time-history input
Hi everybody I would like to create a NN with a time-history as input and a single value as output How can I do it? than...

meer dan 7 jaar ago | 1 answer | 0

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Find estimator for bivariate distribution
Hi I have a set of Joint Probability Density Functions obtain from some sets of data. I would like to find the "best fitting li...

bijna 8 jaar ago | 0 answers | 0

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Question

Equivalent of [C{:}] for vertcat
To concatenate horizontally the content of a cell array we can use the very practice syntax [C{:}]. For example: A = {(1:3)...

bijna 8 jaar ago | 4 answers | 1

4

answers

Question

Compute that portion of a surface above a threshold
Hi. I have a variable Z define over a grid of points X,Y. I would like to compute the area of my domain where Z>threshold. ...

bijna 8 jaar ago | 1 answer | 0

1

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Question

CurrentCharacter properties not working as expected
Hi everybody. if I run the code h=figure; h.CurrentCharacter=char(i); disp(double(h.CurrentCharacter)) for i=1,...

ongeveer 8 jaar ago | 1 answer | 0

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Question

Pause until a figure close OR a button is pressed
Hi. In the middle of my script I ask the user to zoom a figure and call ginput afterwards. I would like to interrupt (return)...

ongeveer 8 jaar ago | 1 answer | 0

1

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Question

Create a nested structure using a variable as field name
Hi everybody Lets say that I have a variable path='\levelOne\levelTwo\levelThree' of which *I don't know the number ...

ongeveer 8 jaar ago | 1 answer | 2

1

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Question

Save changes to class properties with dot notation
Let's say I have a simple class like this one: classdef MyData properties Data = 0; end methods ...

ongeveer 8 jaar ago | 1 answer | 0

1

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Luca Amerio

Politecnico di Milano

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