isoutlier — Detect outliers in numeric arrays.
isoutlier returns a logical mask for numeric observations outside method-specific lower and upper thresholds. RunMat supports numeric array inputs, default dimension reduction, and the "median", "mean", "quartiles", "percentiles", "movmedian", and "movmean" detection methods.
Syntax
TF = isoutlier(A)
TF = isoutlier(A, method)
TF = isoutlier(A, ___, dim)
[TF, L, U, C] = isoutlier(___)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
A | Any | Yes | — | Input numeric array. |
options | Any | Variadic | — | Detection method, dimension, and name-value options. |
Returns
| Name | Type | Description |
|---|---|---|
TF | LogicalArray | Logical mask of detected outliers. |
L | NumericArray | Lower threshold. |
U | NumericArray | Upper threshold. |
C | NumericArray | Center value used by the detection method. |
Returned values from isoutlier depend on how many outputs the caller requests.
Errors
| Identifier | When | Message |
|---|---|---|
RunMat:outliers:InvalidArgument | Inputs, methods, dimensions, or name-value options are malformed. | outlier builtin: invalid argument |
RunMat:outliers:Unsupported | A table/timetable or advanced smoothing/interpolation form is requested. | outlier builtin: unsupported form |
RunMat:outliers:Internal | Internal tensor or logical array materialization fails. | outlier builtin: internal error |
RunMat:outliers:TooManyOutputs | More outputs are requested than the builtin can return. | outlier builtin: too many outputs |
Examples
Detect a vector outlier
TF = isoutlier([1;2;100;4;5])Return thresholds
[TF,L,U,C] = isoutlier(A,"quartiles")Using isoutlier with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how isoutlier changes the result.
Run a small isoutlier example, explain the result, then change one input and compare the output.
Related Stats functions
Summary
binocdf · boxplot · cdf · cdfplot · chi2cdf · corr · corrcoef · corrcov · cov · cov2corr · dummyvar · ecdf · filloutliers · fitdist · geomean · grpstats · harmmean · icdf · 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
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
Random
binornd · bootstrp · datasample · dividerand · exprnd · gamrnd · lhsdesign · mvnrnd · normrnd · random · randsample · rng · trnd · unidrnd · unifrnd · wblrnd
Hist
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how isoutlier is executed, line by line, in Rust.
- View the source for isoutlier 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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