Rank: 1667 based on 91 downloads (last 30 days) and 6 files submitted
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Alexandra

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Technische Universität München

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Files Posted by Alexandra View all
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(last 30 days)
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25 Sep 2013 Lognormal Helpers Fitting for lognormal distributions Author: Alexandra lognormal, fitting, lognfit, normfit, lognstat 20 2
  • 5.0
5.0 | 2 ratings
25 Sep 2013 Multiple Vector Convolutions returns full convolution of multiple vectors and appropriate locations Author: Alexandra conv 7 0
25 Sep 2013 Flatten cell array converts a nested cell array into a flat cell array Author: Alexandra cell, cellfun 27 1
06 Jul 2011 Swap Spaces replaces spaces with underscores and vice versa Author: Alexandra spaces 11 2
  • 5.0
5.0 | 1 rating
04 Jul 2011 vRound variable rounding Author: Alexandra round, ceil, floor, fix, order of magnitude 14 0
Comments and Ratings by Alexandra View all
Updated File Comments Rating
30 Apr 2012 printeps This works around MATLABs tendency to call all fonts 'Helvetica' in .eps files. Author: Jose Aumentado

26 Jan 2011 PARFOR Progress Monitor A Java progress monitor to track progress through a PARFOR loop running MATLAB® workers Author: Edric Ellis

This is a great tool, but it seems to delete all my global variables which is a bit annoying.
Also, I am of the same opinion as Boris. It is a bit small and I cannot read the full title. A few size options would be nice.

12 May 2010 4 Dimensional visualization This is to visualize the functions of 3 variables: z=f(x,y,t), which becomes 4 dimensional problem Author: Divahar Jayaraman

Nice Tool, but a bit more documentation would be nice. Also having to put the data in a file in a special folder ist just plain complicated.

12 May 2010 inpaint_nans Interpolates (& extrapolates) NaN elements in a 2d array. Author: John D'Errico

Comments and Ratings on Alexandra 's Files View all
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02 Sep 2014 Lognormal Helpers Fitting for lognormal distributions Author: Alexandra John Adcox

Nevermind....sorry :-(. I was thinking variance, you are outputting standard deviation. My mistake

02 Sep 2014 Lognormal Helpers Fitting for lognormal distributions Author: Alexandra John Adcox

I think there might be some math errors in your logn2mean and mean2logn scripts. They do not match up with Matlab's lognstat functions.

I think you need to change line 15 in logn2mean to:
s = exp(2*mu + sigma.^2) .* (exp(sigma.^2) - 1);

And line 14 in mean2logn to:
sigma = sqrt(log(s./m.^2 + 1));

This would then follow the equations laid out my the Mathworks website located at:
http://www.mathworks.com/help/stats/lognstat.html

26 Sep 2013 Flatten cell array converts a nested cell array into a flat cell array Author: Alexandra Jan Simon

You use "cellfun(@(c) ~isempty(c), cell_array)" and "cellfun(@isempty, c)". While the 2nd method is more efficient, the built-in commands defined as string are still faster, because they do not call Matlab from the MEX level: "cellfun('isempty', c)".

"cat(1, c, ctemp(:)" is faster than the elementwise extraction and re-combination "c = [c{:}, ctemp{:}];".

08 Sep 2011 Swap Spaces replaces spaces with underscores and vice versa Author: Alexandra Michael Goldstein

Very helpful for basic adjustments to file- and title-names. Thank you!

06 Jul 2011 Listfiles retrieves files in specified directory Author: Alexandra Bob Hamans

See for similar functions: http://www.mathworks.com/matlabcentral/fileexchange/16217-wildcardsearch or http://www.mathworks.com/matlabcentral/fileexchange/16216-regexpdir

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