Rank: 502 based on 270 downloads (last 30 days) and 23 files submitted
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Joshua Carmichael

E-mail
Company/University
National Security

Personal Profile:

Research: Glaciology, seismology, applied functional analysis.
https://sites.google.com/site/joshuadcarmichael/home

Professional Interests:
Geophysical signatures, statistics, applied math, probability, seismology

 

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Files Posted by Joshua View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
07 Mar 2014 Screenshot sample correlation distribution function Compute PDF for the sample correlation Author: Joshua Carmichael probability, statistics, sample correlation, distributions, cross correlation 9 0
26 Feb 2014 Doubly Noncentral Beta Distribution function Computes saddle-point approximation to Beta-distribution Author: Joshua Carmichael doubly noncentral, probability, statistics, beta distribution 9 0
26 Feb 2014 Doubly Noncentral F Distribution function Computes saddle-point approximation to F-distribution Author: Joshua Carmichael probability distribut..., statistics, doubly noncentral 14 0
19 Feb 2014 Noncentral Beta Distribution Compute the Noncentral Beta using Transformations Author: Joshua Carmichael probability, statistics, distributions 17 0
25 Jun 2010 day of year Date vectors converted to day of the year. Author: Joshua Carmichael julian day, calender, time, earth sciences, measurement, geophysics 35 6
  • 5.0
5.0 | 2 ratings
Comments and Ratings by Joshua View all
Updated File Comments Rating
10 Jan 2014 subtightplot Asymmetric subplots with variable inner gaps and outer margins. Author: Felipe G. Nievinski

Excellent utility, and works well with export_fig. I implement it with all of my tools.

08 Jan 2014 SSH/SFTP/SCP For Matlab (v2) Improved Matlab interface for SSH2/SFTP/SCP (supports public key) using the Ganymed-SSH2 javalib. Author: David Freedman

Package looks great; however, I get the following errors:
Error: SSH2 could not connect to the ssh2 host - "cosine"!

Error in ==> ssh2 at 84
ssh2_struct = ssh2_main(ssh2_struct);

Error in ==> ssh2_command at 31
ssh2_struct = ssh2(ssh2_struct);

Error in ==> ssh2_simple_command at 38
ssh2_struct = ssh2_command(ssh2_struct, command, enableprint);

However, I *am* able to connect with the system() command. Any thoughts?

16 Oct 2011 Plot earth Plot earth in 3D Author: Bruno Luong

A nice utility. However, there are few bugs with the plot2dmap options. The field name is accidentally called plot2Dmap after the "lower" function is used, and hence a field value other than false for plot2dmap can never be implemented.

24 Mar 2010 fshift Shifts the elements of an array by a (possibly non-integer) given number of elements. Author: Francois Bouffard

Never mind, now that I have more carefully read your file, I see that covered the 2*pi factor in the frequency digitization and you are not forcing the signal to be real.

22 Mar 2010 fshift Shifts the elements of an array by a (possibly non-integer) given number of elements. Author: Francois Bouffard

Helpful.
Two comments:
(1) Is the frequency domain shift appearing as:

exp(-1i*s*pi*f)';

Suppose to include a factor of 2 to be consistent with Matlab's definition of the fft, so that:

exp(-1i*s*2*pi*f)';

(2) Concatenate the input signal with it's flipped version, to make it even, to avoid forcing it to be real, then extract the latter half of the signal.

Comments and Ratings on Joshua's Files View all
Updated File Comment by Comments Rating
15 Oct 2014 Coherently aligns data Aligns data according to cross-corr maxima Author: Joshua Carmichael Machado, Felipe

NICE.
Just one question. Why did you choose to have the signals in columns of a matrix? (At least as I see) It would be better to receive two separate vectors

17 Sep 2014 day of year Date vectors converted to day of the year. Author: Joshua Carmichael Edward

on second thought, datenum makes this sorta trivial.
http://www.mathworks.com/matlabcentral/newsreader/view_thread/32006

17 Sep 2014 day of year Date vectors converted to day of the year. Author: Joshua Carmichael Edward

Did exactly what was advertised. An inverse function (DOY to dd:mm:yy or whatever) would be nice for symetry.

25 Jun 2013 xcorAlign.m Shifts data by maximum cross correlation Author: Joshua Carmichael Crane, David

Light, fast, does just what it says. Thanks!

27 Mar 2012 Conic Matching Pursuit Expands data as sum of conic projections Author: Joshua Carmichael chen, zhansheng

thx for your sharing

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