Luca Amerio

Politecnico di Milano

Last seen: mer än 3 år 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 ...

nästan 4 år ago | 0 answers | 0

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Question

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...

mer än 5 år ago | 0 answers | 2

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answers

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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...

mer än 5 år ago | 2 answers | 0

2

answers

Question

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 ...

mer än 5 år ago | 1 answer | 0

1

answer

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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...

mer än 5 år ago | 1 answer | 0

1

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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...

mer än 5 år ago | 1 answer | 0

1

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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 ...

nästan 6 år 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 ...

nästan 6 år 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...

nästan 6 år ago | 1 answer | 0

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Submitted

HDF2Struct
Reads HDF5 files and returns data in a structure

nästan 6 år ago | 1 download |

Question

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). ...

ungefär 6 år ago | 3 answers | 0

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

nästan 7 år ago | 0

| accepted

Question

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 ...

nästan 7 år ago | 1 answer | 0

1

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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...

nästan 7 år 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 ...

nästan 7 år ago | 2 answers | 0

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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...

nästan 7 år 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 ...

ungefär 7 år ago | 1 answer | 3

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answer

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 ...

ungefär 7 år 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...

ungefär 7 år ago | 2 answers | 3

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answers

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...

mer än 7 år 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...

mer än 7 år 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.

mer än 7 år ago | 1 download |

Question

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...

nästan 8 år ago | 1 answer | 0

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Question

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...

ungefär 8 år 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)...

ungefär 8 år 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. ...

ungefär 8 år ago | 1 answer | 0

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answer

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,...

ungefär 8 år ago | 1 answer | 0

1

answer

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)...

mer än 8 år ago | 1 answer | 0

1

answer

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 ...

mer än 8 år ago | 1 answer | 2

1

answer

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 ...

mer än 8 år ago | 1 answer | 0

1

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Luca Amerio

Politecnico di Milano

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