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Allen Goldstein


Last seen: 2 years ago |  Active since 2019

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2D Minimization problem, not good for fminsearch?
My 2D objective function is like finding a whirlpool in the surface of a lake. I do not have good initial guesses. Below examp...

3 years ago | 1 answer | 0

1

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Answered
covariance matrix from a random vector?
Let me see if I have this right, if I run cov(z) where z is a vector, I'll just get a vector. The covarinace matrix has the var...

3 years ago | 0

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How to programmatically change the label text of a matlab.ui.control.Knob (or other ui.conntrol)
I have a set of knobs that need to have the label changed depending on what they are controlling. But it seems the label text c...

3 years ago | 1 answer | 0

1

answer

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setting 'match figure screen size' for copy options to a figure throgh command prompt
You need to set the Resoluton in the factorystyle to 0. style = hgexport('factorystyle'); % get the style style.Resolution = 0...

4 years ago | 0

Answered
When I save a figure to a file (saveas , hgexport) the figure is re-sized. How do I save a figure to a file that is identical to the screen figure (i.e. not resized)? Why isn't this the default for saving figures?
You need to change the Resolution in the factorystyle to 0: style = hgexport('factorystyle'); % get the style ...

4 years ago | 0

Question


Equidistant offsets to points on a log scale
I am trying to plot multiple sets of data points and error bars on a log x axis (e.g. three sets of points with the same x value...

4 years ago | 1 answer | 0

1

answer

Answered
If a fft of vector x is plotted then what would be the x-axis?
To plot the entire original fft use: N = length(X_mag) f = horzcat(-linspace(0,N/2,N/2)*Fs/N,linspace(N/2,0,N/2)*Fs/N); To cr...

5 years ago | 0