Luca Amerio

Politecnico di Milano

Last seen: fast 3 Jahre vor | Aktiv seit 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 ...

fast 3 Jahre vor | 0 Antworten | 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...

mehr als 4 Jahre vor | 0 Antworten | 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...

mehr als 4 Jahre vor | 2 Antworten | 0

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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 ...

mehr als 4 Jahre vor | 1 Antwort | 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...

mehr als 4 Jahre vor | 1 Antwort | 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...

fast 5 Jahre vor | 1 Antwort | 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 ...

fast 5 Jahre vor | 1 Antwort | 0

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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 ...

fast 5 Jahre vor | 1 Antwort | 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...

fast 5 Jahre vor | 1 Antwort | 0

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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). ...

mehr als 5 Jahre vor | 3 Antworten | 0

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

etwa 6 Jahre vor | 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 ...

etwa 6 Jahre vor | 1 Antwort | 0

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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 ...

etwa 6 Jahre vor | 2 Antworten | 0

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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...

etwa 6 Jahre vor | 2 Antworten | 1

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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 ...

mehr als 6 Jahre vor | 1 Antwort | 3

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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 ...

mehr als 6 Jahre vor | 0 Antworten | 0

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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...

mehr als 6 Jahre vor | 2 Antworten | 3

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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...

mehr als 6 Jahre vor | 2 Antworten | 0

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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...

etwa 7 Jahre vor | 1 Antwort | 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...

etwa 7 Jahre vor | 0 Antworten | 0

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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)...

mehr als 7 Jahre vor | 4 Antworten | 1

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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. ...

mehr als 7 Jahre vor | 1 Antwort | 0

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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,...

mehr als 7 Jahre vor | 1 Antwort | 0

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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)...

mehr als 7 Jahre vor | 1 Antwort | 0

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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 ...

mehr als 7 Jahre vor | 1 Antwort | 2

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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 ...

mehr als 7 Jahre vor | 1 Antwort | 0

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GUI - set a object to be selectable or not
Hi everybody. I have a GUI (programmatically created) with an axis in it. I would like to have the zoom/datatip/select comman...

mehr als 8 Jahre vor | 1 Antwort | 0

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Script vs Function with no input/output
Sometimes I have to write a function ad-hoc for a script purpose. Usually I was simply creating a new .m file containing the fun...

mehr als 8 Jahre vor | 1 Antwort | 0

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Insert NaNs (or any value) in several position of a vector
Hi i have a vector like this a=[1 2 3 5 6 7 9 10 13 14]; I would like to find where the diff is bigger than a value (le...

mehr als 8 Jahre vor | 2 Antworten | 1

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MATLAB from command line - Cannot find script in the current direcoty
Hi, I just installed Matlab on a Linux machine that doesn't have the X server. Therefore I launch matlab using the -nojvm -nod...

fast 9 Jahre vor | 1 Antwort | 0

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Luca Amerio

Politecnico di Milano

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