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Pass 'cfit' object into a new function
You appear to be assigning [] to both X and Y, then fitting to that. I wouldn't expect that to work. However, if you are succ...

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Anovan gives contradicting results
This is a balanced design, so the sum of squares explained by g1 is indeed the same in each case. But its F statistic and p-valu...

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How to fix a singular design matrix created by LinearModel during categorical interaction expansion?
When I try an example like this I see: Warning: Regression design matrix is rank deficient to within machine precision. ...

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What is 'cat' param used for in TreeBagger method
This means that column 6 of X is to be treated as categorical. Suppose it takes values 1,2,3. If X were continuous, splits would...

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fminsearch combining maximum likelihood and least squares
If you use this function, fminsearch will try to minimize the first output. You could wrap "yourfunction" in a second function a...

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dataset create categorical variables from existing variable
Start with this and see if it gets you anywhere: d = dataset; d.a = (ds=='a')

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how to compute a linear mixed effect using nlmefit?
It looks like nlmefit invokes your model function with betas as a row vector. Try this: model = @(Betas,X) (X*Betas(:))

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Normalize histogram of normally distributed data
I would normalize it to area 1. The usual histogram has area equal to binwidth*sum(n), so divide by that. Probably binwidth=b(2)...

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MATLAB kmeans clustering vector space
A couple of things to look at. First, norm(m) where m is a matrix returns a scalar. You seem to want a vector. Second, in your l...

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How to implement cross validation with back propogation network
I am not a nnet expert, but I am under the impression that your inputs should have one column per observation (rather than one r...

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Is it possible , to use NaiveBayes.fit prediction with crossvalind
The error comes from this: test(cp1,1) You're using cp1 to index into the logical vector test. I suspect you want someth...

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varimax rotation of PCs
On reflection, if you are thinking of the eigenvalues as the variances of the scores, perhaps this is what you want after rotati...

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Estimating initial values for nlinfit or lsqcurvefit
If you expand out your expression, you'll see that you have a polynomial up to x^3, so there are four coefficients including the...

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Canonical Correlation Analysis - canoncorr function in matlab
Try comparing V with the product bsxfun(@minus,Y,mean(Y))*B The first factor is just Y with the column means subtracted....

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plot with grouping variables
I'm not clear what you mean by a "real" graph. If you want the points connected by lines, you can specify a linestyle after usin...

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calcuating expected value from a joint distribution
You don't say what errors you get. You could get problems if you are in a region where y is near zero. Away from that region,...

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How can I draw Multivariate Scatter Plot?
You could use gscatter to plot two of them with coloring determined by the third. You could use plotmatrix or gplotmatrix to plo...

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LS Estimates aren't accurate
It looks like you are fitting an AR(160) model. Aside from that, I can't figure out what you're trying to do. You appear to b...

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generate a random number according to a probability distribution
Check out the datasample function, including its 'Weights' argument.

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K-means without iteration
Not sure I follow exactly, but you could use grpstats to compute the coordinatewise means of data for each distinct value of T. ...

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Undefined function or variable "idxBest" in kmeans
This looks like a bug. I can see it has been fixed in the toolbox source code for distribution in an upcoming release. From what...

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LinearModel.fit - are the regression coefficient standardized?
I don't quite understand what you want. The coefficient estimates as shown are not standardized. The so-called "beta coefficient...

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Flexible number of paramters for MLE with custom function
Let's try it. The normpdf function uses the default sigma=1 if no standard deviation value is given. >> x = 1 + randn(100,1...

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p-value returned by non-paraemtric test
Type "help kstest" and you may see (if your MATLAB is recent enough) that there's a 'Type' option to control whether it's one-ta...

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Generating dataset from Gaussian Mixture Model
It's multivariate in the sense that it supports more than one dimension, but you can use it for a single dimension: g = gmd...

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how to remove a bar from histogram which drawn using 'hist' function?
If you want to omit zeros from the bar calculations: hist(h(h~=0), 6) Depending on your data, this may omit the bar that...

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The function nlinfit is not found
The nlinfit function is part of the Statistics Toolbox. Try typing "ver" to see if this toolbox is among the ones you have avail...

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mvtcdfqmc error when mvncdf used within fsolve
When I try this, it's because H becomes negative and so log(A_t./H) becomes complex. You may find it helpful to set a breakpo...

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error message in using mvnrnd function??
Using chol is a good idea, but chol does not actually check that the matrix is symmetric: >> a = [2 1;1 3] a = 2...

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How can I find t-statistics for parameters a, b of a function f = 1 / (a.log(x)+b) using matlab?
Do you have a recent version of the Statistics Toolbox available? >> load census >> d = dataset(cdate,pop); >> nlm = ...

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