trnd — Generate Student's t random numbers.
trnd(nu) generates Student's t random numbers with nu degrees of freedom. Size arguments can be supplied as separate dimensions or as a size vector.
Syntax
r = trnd(nu)
r = trnd(nu, sz)
r = trnd(nu, sz1, sz2, ...)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
nu | Any | Yes | — | Degrees of freedom parameter. |
sz | Any | Variadic | — | Output size arguments. |
Returns
| Name | Type | Description |
|---|---|---|
r | NumericArray | Random sample array from the Student's t distribution. |
Errors
| Identifier | When | Message |
|---|---|---|
RunMat:trnd:InvalidArgument | Input parameters or size arguments are missing, malformed, or incompatible. | trnd: invalid argument |
RunMat:trnd:Internal | Internal tensor conversion or allocation fails. | trnd: internal operation failed |
How trnd works
numust be a positive scalar or a positive array of degrees of freedom. MATLAB-compatible calls usesingleordouble; typed-integer degrees of freedom are available inrunmatcompatibility mode.- Scalar
nubroadcasts over the requested output size. - Array
nurequires the requested size to match the shape ofnu. - MATLAB-compatible size controls use integer-valued doubles; typed-integer scalar or vector sizes are available in
runmatcompatibility mode. nu = Infgenerates standard normal random numbers.
Examples
Scalar sample
r = trnd(10)Matrix sample
r = trnd(1, 5, 5)Using trnd with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how trnd changes the result.
Run a small trnd example, explain the result, then change one input and compare the output.
FAQ
How does RunMat generate trnd samples?⌄
RunMat draws a standard normal variate and scales it by an independent chi-square variate generated through a gamma sampler.
Related Stats functions
Random
binornd · bootstrp · datasample · dividerand · exprnd · gamrnd · lhsdesign · mvnrnd · normrnd · random · randsample · rng · unidrnd · unifrnd · wblrnd
Ml
bayesopt · classify · confusionmat · crossvalind · cvpartition · fitclinear · fitctree · fitlm · kmeans · knnsearch · lasso · lassoglm · linkage · lscov · mnrfit · optimizableVariable · pdist · pdist2 · perfcurve · predict · regress · ridge · squareform · test · training · tsne
Summary
binocdf · boxplot · cdf · cdfplot · chi2cdf · corr · corrcoef · corrcov · cov · cov2corr · dummyvar · ecdf · filloutliers · fitdist · geomean · grpstats · harmmean · icdf · isoutlier · kstest · kurtosis · lsline · mad · mode · nanmax · normalize · normcdf · norminv · normpdf · onehotdecode · onehotencode · pdf · prctile · quantile · refline · rmse · skewness · tabulate · tcdf · tiedrank · tinv · tpdf · ttest2 · wblinv
Hist
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how trnd is executed, line by line, in Rust.
- View the source for trnd in Rust on GitHub
- Learn how the RunMat runtime works
- Found a bug? Open an issue with a minimal reproduction.
About RunMat
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