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Jeff Miller


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341 total contributions since 2013

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Answered
How to plot a mixed density function?
x=-6:.01:10; pdf1 = normpdf(x,1,1); pdf2 = normpdf(x,4,1); mixpdf = 0.5*pdf1 + 0.5*pdf2; figure; plot(x,mixpdf);

15 hours ago | 0

Answered
How to load the letter and their log probabilities in database.txt into our program?
This function on FileExchange simply returns a long list of all the numbers in the file. Since it looks like your file has the ...

3 days ago | 0

Answered
ranova(rm) ranovatbl contains only NaN values and zero's
> 'WithinDesign', Meas This doesn't look right with Meas only having one possibility. Try removing that. > all data are fro...

7 days ago | 0

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Answered
How to fit complicated function with 3 fitting parameters using Least square regression
I assume you have vectors of values for V and J, in which case fminsearch might be a good choice. The basic steps are: Write ...

12 days ago | 0

Answered
How to carry out a chi-squared distribution fit?
chi2gof is not the function you want here--it is for an entirely different purpose. The last few lines should be something like:...

13 days ago | 0

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Answered
P-value of a fitted distribution to observation?
kstest does return a p value as the second output. Maybe you are supposed to report that.

20 days ago | 0

Answered
performing logistic regression with categorical predictors
This message likely means that two or more of your predictors are redundant. For example, two of the numerical X predictors mig...

20 days ago | 0

Answered
sampling error from a truncated normal distribution
Change the histogram line to this: histogram(d_tnorm,30,'Normalization','pdf')

22 days ago | 0

Answered
How do I share variables between files in a project?
While not the best programming practice, a quick and dirty solution for your situation might be to return a "global-substitute" ...

24 days ago | 0

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Regression of log normal data
Take the log transformation of the data and then it will have a normal distribution. Do the regression on the transformed data....

26 days ago | 1

Answered
How to find the turning point from noisy data
A few ideas: Form a template for the increasing-then-decreasing shape you are looking for, maybe about 50 units wide along your...

26 days ago | 0

Answered
Running an .EXE file with an Input file with a command via matlab
sprintf might be overkill here. Maybe just: status = system('file.exe ab.txt') If file.exe is not on the Windows path, you mi...

29 days ago | 0

Answered
How perform bootstrap balanced resampling of a dataset?
I'm not sure...is this what you want? N = 7; % Small values of N an d K to make it easier to see what it does. K = 5; data = ...

30 days ago | 0

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Answered
Inverse Cumulative Distribution Function for a Custom PDF.
If you have the custom PDF function (call it custPDF), then you can compute the custom CDF function something like this: functi...

1 month ago | 0

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Answered
How do I access entries in a table that match a string?
This should work: wantedRows = ismember(A.ProxID,nameFolds); wantedZones = A.zone(wantedRows);

1 month ago | 0

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Answered
Sum Squared Errors for 3 parameters
It looks like your X2 and X3 'for' loops aren't doing anything, since there is no code between their 'for' and 'end' statements....

1 month ago | 0

Answered
Two-way repeated measures fitrm error
You seem to have only two scores for each participant, M(:,1) and M(:,2), in which case you can find out whether the test means ...

1 month ago | 0

Answered
Nested function in optimisation
Is this what you are trying to compute? PitchRAO = exp(PitchLogRAO);

2 months ago | 0

Answered
Defining a parameter which depends on image luminance distribution function?
If I understand you correctly, I think you want this: L = quantile(B,0.1); if L <= 50 alpha = 0; elseif L >= 50 && L <...

2 months ago | 0

Answered
mixed model for repeated measures
fitlme

2 months ago | 0

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Answered
How to get standard errors from copulafit
You could estimate it by taking bootstrap samples from u.

2 months ago | 0

Answered
Help with linear mixed effects model formula
That model is appropriate if you want to assume these things (in addition to normality, independence, etc): (a) subjects diff...

2 months ago | 0

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Answered
fminsearch and simulated annealing with penalties
It depends a little on exactly what relations you want to impose, but often you can do this by mapping MATLAB's real-number para...

2 months ago | 0

Answered
Converting R code into Matlab code
I think MATLAB has a built-in function that you can use instead of the R for loop. Try just: newSpeed= speed-mean(speed)+33.02...

2 months ago | 0

Answered
fsolve - function with two input arguments
function b = find_b(knownX, knownA, guessForB) fun = @(b) pfun2(knownA,b) - knownX; b = fzero(fun,guessForB); end De...

2 months ago | 0

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Answered
Fit a parameter to minimise a correlation between two vectors
% Some fake data to use in testing: % Presumably you have your own values for these. nExpts = 10; C = rand(nExpts,1); V1 = r...

2 months ago | 1

Answered
Cascading a User Definable number S Parameter objects together
Maybe this? n = input('Input number of files to be imported & cascaded:\n'); SPara= cell(1,n); for x = 1:n SPara{x} = sp...

2 months ago | 0

Answered
Help with finding the average correlation coefficient between a matrix value and its surrounding neighbors?
A correlation isn't designed to measure the similarity between two isolated values, like your given (i,j) element and each of it...

3 months ago | 1

Answered
calculate a P value using a permutation test
This contribution on file exchange looks like it will do what you want.

3 months ago | 0

Answered
Looping through a large questionnaire set, creating new tables
I hate to say this, but it might be easiest to do a lot of the work in Excel. Note that the data in your screenshot are represe...

3 months ago | 0

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