Jeff Miller

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How to integrate a lognormal pdf
It's hard to say for sure without seeing your xx and xxx values, but maybe it is just your expectations that are faulty? Certai...

6 dagen ago | 0

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Find number of factors for factor analyses
My $0.02 worth: I would suggest running facan with nBasis=8 and checking the resulting scree plot (plot of eigenvalue as a func...

6 dagen ago | 0

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Answered
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...

13 dagen ago | 0

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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...

15 dagen ago | 0

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Answered
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 ...

ongeveer 2 maanden ago | 0

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problem with the anova calculation
Just change one line to this mdl = fitlm(tbl,'pick~C_t')

2 maanden 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 maanden ago | 1

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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 maanden ago | 0

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Answered
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...

3 maanden 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...

3 maanden 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 maanden ago | 0

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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 maanden 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 maanden 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 maanden 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 maanden ago | 0

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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 maanden 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...

4 maanden ago | 0

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Answered
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 maanden 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 maanden ago | 0

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Answered
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 maanden ago | 1

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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 maanden 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 maanden ago | 0

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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...

5 maanden ago | 0

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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...

5 maanden ago | 1

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Answered
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 maanden ago | 0

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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 maanden ago | 2

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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 maanden ago | 0

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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 maanden ago | 1

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Answered
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 maanden ago | 0

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Answered
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 maanden ago | 0

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Jeff Miller

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