# Jeff Miller

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**Content Feed**

linear mixed-effects model (fitlme) add array variable

I'm pretty sure the predictors have to be single values, so you can't feed in an array as a single unified predictor. You could...

5 days ago | 0

Using pdf to find threshold

I'm not entirely sure what you mean by "threshold", but maybe you are trying to identify the middle 95% of the distribution? If...

7 days ago | 0

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Anova-n outputs as not full rank. Returns NaN P-value.

The short answer is that you have to collect more data to fix this. Look here: >> crosstab(gX1,gX2,gX3) ans(:,:,1) = 7 ...

2 months ago | 0

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problem with the anova calculation

Just change one line to this mdl = fitlm(tbl,'pick~C_t')

2 months ago | 0

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Can I find likelihood function of an objective function?

A lot depends on the details of these models, but one way to proceed would be in terms of the error scores. Consider the full mo...

2 months ago | 1

ANOVA result No p-value.

The problem is that the full model has 90 parameters and predicts a separate mean for each of the 3*3*10 conditions. But you onl...

2 months ago | 0

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I am having trouble with errors in the array used for anova analysis

Looks like g1 should be a numerical vector, not a cell array (i.e., square brackets instead of curly brackets). e.g., g1 = [1,2...

2 months ago | 0

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How to fit lognormal distribution on my data

If the scores are in vector1 and the counts are in vector 2, you could fit like this by the method of moments (should be OK with...

2 months ago | 0

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How do I display Tiled Layouts properly?

I haven't used tiled layouts yet so this may be way off-base, but something like the following has solved similar scaling proble...

3 months ago | 0

How do I calculate the signal to noise ratio of a signal without knowing the noise of the signal?

I'm not sure whether this fits your situation, but one way to estimate the noise is to subtract the average of the epochs from e...

3 months ago | 1

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Poisson PMF using MATLAB

This might get you started... k = 0:17; pmf = poisspdf(k,4); figure; plot(k,pmf,'o-')

3 months ago | 0

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May I ask how I can find 95% confidence interval of skew_FP() from these codes?

LBUB = prctile(skew_FP(),[2.5,97.5]);

3 months ago | 0

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Using a specific number of digits

Maybe by "report k" you are referring to printing it, in which case this should work for k=1:100 fprintf('%03d\n',k) end

3 months ago | 0

How to computing confidence bounds of the regression model using the bootstrap method

I'm assuming that your figure shows t on the horizontal axis and y on the vertical. The problem is that bootci is giving you co...

3 months ago | 0

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How do I update an inherited property in both the SuperClass and SubClass simultaneously in real time?

The superclass/subclass relationship is a little different than you think. When you make SUP and SUB, these are completely diff...

3 months ago | 0

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Anova analysis with blocking

You can do this with fitlm as long as you want to test for the effect(s) of interest within a standard linear RCBD model. The h...

4 months ago | 0

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Question about "gamcdf" code

To get the 75th percentile value, you need to use gaminv() rather than gamcdf. Also, the shape parameter comes first and scale ...

4 months ago | 0

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How to use num2str inside text with latex interpreter?

I think you need square brackets like this to assemble all the characters into a single string text(4,5,['$L_{',num2str(i),'}$'...

4 months ago | 1

ttest2 doubt in the results between 2 different groups

The implication of the t-test result is that the difference (even though it looks big to you) could well have arisen by chance e...

4 months ago | 0

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Alternative to Eval for small number of variables

Put your workspace variables in a struct and then use var_names to access the fields of that struct, something like this: wrkst...

4 months ago | 0

if I set model as 'linear' in 'anovan', is 'anovan' equivalent to applying respectively 'anova1' to the factors?

no, those are not equivalent, as you should be able to verify by applying them both to the same dataset. With its default 'linea...

4 months ago | 0

Plot a cumulative distribution with a symmetric logarithmic scale centred at 50%

Not sure if I really understand what you want but maybe something like this: z_app = norminv(cdf_app); % find the normal Z sco...

4 months ago | 1

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Error when using: parmHat = wblfit(x)

The problem is that your x vector has some nan's in it, and wblfit can't handle those. Try y = x(~isnan(x)); parmHat = wblfit...

5 months ago | 0

How do we modify the tails of norrmal/any kind of distribution by keeping other portion is same?

As Paul says, the details are important because there are infinitely many ways to do what you are asking. One way to think abou...

5 months ago | 2

How to avoid duplicating code in the constructor and a reset method of a class with class inheritance.

This is presumably an issue only because you sometimes create objects of the type MySuperClass--not just descendant MyClass obje...

5 months ago | 0

Estimate ksdensity values for large number of data points, e.g. 100000 values

It is a common mistake to think that PDF values should be less than 1. Actually, PDFs are defined in such a way that the area un...

5 months ago | 1

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Generation of large data sets (10^4) for log Pearson type III distribution and finding its paramters

If the distribution you have in mind is the same one described here then this is a good problem for Cupid (see especially the fi...

5 months ago | 0

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Fundamental proof of signal averaging noise reduction

Your code doesn't really measure noise reduction in the right way. Noise reduction refers to variability across many repeated m...

5 months ago | 0

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How to compute the slop of bootstrap population with its confidence interval?

It sounds like this is what you are after, although I'm not sure why you want to do it: m = bootstrp(100,@mySlope,A); LowerCI ...

6 months ago | 0

Conditional fixed effects for glme

I think this is the key sentence from the example page: "Specify the dummy variable encoding as 'effects', so the dummy variable...

6 months ago | 0