geomean — Compute the geometric mean of numeric data.
geomean(X) computes the geometric mean along the first non-singleton dimension. geomean(X,dim), geomean(X,vecdim), and geomean(X,"all") select the reduction axes.
Syntax
Y = geomean(X)
Y = geomean(X, dim)
Y = geomean(X, dim, nanflag)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
X | Any | Yes | — | Input data array. |
dim | Any | No | — | Dimension, dimension vector, or "all" selector. |
options | Any | Variadic | — | Optional dimension and missing-value arguments. |
Returns
| Name | Type | Description |
|---|---|---|
Y | NumericArray | Computed statistic. |
Errors
| Identifier | When | Message |
|---|---|---|
RunMat:geomean:InvalidArgument | Inputs, flags, dimensions, or options are malformed. | descriptive statistics: invalid argument |
RunMat:geomean:Internal | Internal tensor conversion or allocation fails. | descriptive statistics: internal error |
How geomean works
- NaNs are included by default.
"omitnan"skips NaNs in each slice; empty slices returnNaN.- Zero values produce a zero geometric mean for that slice.
- Negative values produce
NaNfor the affected slice.
Example
Column geometric means
m = geomean([1 9; 4 16])Using geomean with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how geomean changes the result.
Run a small geomean example, explain the result, then change one input and compare the output.
FAQ
How do I ignore missing values?⌄
Pass "omitnan", for example geomean(X,1,"omitnan").
Related Stats functions
Summary
binocdf · boxplot · cdf · cdfplot · chi2cdf · corr · corrcoef · corrcov · cov · cov2corr · dummyvar · ecdf · filloutliers · fitdist · 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
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 geomean is executed, line by line, in Rust.
- View the source for geomean 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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