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# jstults

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Created Feb 26, 2012
Square Root Map for Falkner-Skan
View integrate_fs3.py
 import scipy as sp from scipy.integrate import ode from scipy.optimize import fsolve from matplotlib import rc rc('text', usetex=True) tick_size = 'large' label_size = 'xx-large' rc('xtick', labelsize=8) rc('ytick', labelsize=8) rc('legend', fontsize=12)
Created Mar 18, 2012
Sampling Arduino Pins Quickly
View sketch_mar17a.pde
 /* Sampling with the Arduino based on examples from http://sites.goggle.com/site/MeasuringStuff */ #define FASTADC 1 // defines for setting and clearing register bits #ifndef cbi #define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit)) #endif
Created Jun 2, 2012
simple time-series analysis of android market share data
View os_stats.R
 # # do some simple time series analysis on smartphone os data # data: http://www.catb.org/esr/comscore/ # commentary: http://esr.ibiblio.org/?p=4368 # # this file has the market share percentages table osdata = t(read.csv("os_stats.csv",header=TRUE,row.names=1)) # this file has the raw userbase in millions osdata2 = t(read.csv("os_stats_2.csv",header=TRUE,row.names=1))
Created Jul 5, 2012
example 2D experimental designs using AlgDesign library
View basis_exp_dx.R
 # # experimental designs using different basis # library(AlgDesign) # generate a full factorial combination of factor levels candidates = gen.factorial(levels=c(51,51), nVars=2, center=TRUE, varNames=c("X1","X2")) cand.2 = gen.factorial(levels=c(7,7), nVars=2, center=TRUE, varNames=c("X1","X2")) # add columns for the orthogonal basis candidates = transform(candidates, X1.p = poly(candidates\$X1, degree=6), X2.p = poly(candidates\$X2, degree=6))
Created Jul 28, 2012
example of a test design and mixed effect analysis for measuring polywell performance and characterizing symmetry
View polywell_sym.R
 # file: polywell_sym.R # example of a test design and mixed effect analysis for measuring # polywell performance and characterizing symmetry # author: Josh Stults, www.variousconsequences.com # date: 28 July 2012 # see also: # http://prometheusfusionperfection.com/2012/07/27/symmetry-test/ # http://cran.r-project.org/web/packages/AlgDesign/index.html # www.stat.wisc.edu/~bates/IMPS2008/lme4D.pdf
Created Aug 18, 2012
comparison of D- and I-optimal samples for a 6th order 2D response surface
View idopt.R
 # compare point distributions for I and D optimal designs # file: idopt.R # rm(list=ls()) library(pwr) library(AlgDesign) library(xtable) dice = data.frame(var=c("x","y"), low=c(-1,-1), high=c(1,1), center=c(0,0), nLevels=111, round=4, factor=FALSE) Ispace = gen.factorial(levels=c(111,111),nVars=2,center=TRUE,varNames=c("x","y"))/55
Created Oct 8, 2012
gce_setup
View gist:3853261
 Authentication successful. +-----------------------------------------+-------------------------+ | property | value | +-----------------------------------------+-------------------------+ | name | varconcfd | | description | | | creation time | 2012-10-08T15:48:04.889 | | ips | | | INSTANCES quota usage / limit | 0.0 / 8.0 | | CPUS quota usage / limit | 0.0 / 8.0 |
Created Oct 8, 2012
gce_first_instance
View gist:3853337
 +------------------------+-----------------------------------------------+ | property | value | +------------------------+-----------------------------------------------+ | name | my-first-instance | | description | | | creation time | 2012-10-08T16:10:29.342 | | machine | n1-standard-1 | | image | projects/google/images/ubuntu-12-04-v20120912 | | zone | us-central1-a | | tags | |
Created Oct 8, 2012
Ubuntu OpenFoam Config
View gist:3853492
 VERS=\$(lsb_release -cs) sudo sh -c "echo deb http://www.openfoam.org/download/ubuntu \$VERS main > /etc/apt/sources.list.d/openfoam.list" apt-get update apt-get install openfoam211 paraviewopenfoam3120
Created Oct 8, 2012
openFoam configuration test
View gist:3853656
 \$ icoFoam -help Usage: icoFoam [OPTIONS] options: -case specify alternate case directory, default is the cwd -noFunctionObjects do not execute functionObjects -parallel run in parallel -roots <(dir1 .. dirN)> slave root directories for distributed running
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