nanvar — Compute variances while ignoring NaN values.
nanvar(A, ...) is a compatibility alias for var(A, ..., 'omitnan').
Syntax
B = nanmean(A, ...)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
A | Any | Yes | — | Input value. |
args | Any | Variadic | — | Method, dimension, or option arguments. |
Returns
| Name | Type | Description |
|---|---|---|
B | Any | Result value. |
Errors
| Identifier | When | Message |
|---|---|---|
RunMat:missing:InvalidArgument | Arguments do not match a supported missing-value syntax. | missing-value builtin: invalid argument |
RunMat:missing:UnsupportedType | The input type has no missing-value representation in RunMat. | missing-value builtin: unsupported input type |
RunMat:missing:InternalError | Internal shape or table materialization fails. | missing-value builtin: internal error |
How nanvar works
- Normalization, dimension, and
"all"options supported byvarare forwarded.
Example
Ignore NaN values
v = nanvar([1 NaN 3], 0, 'all')Expected output:
v uses var(..., 'omitnan') semantics.Using nanvar with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how nanvar changes the result.
Run a small nanvar example, explain the result, then change one input and compare the output.
Related Missing functions
anymissing · fillmissing · ismissing · missing · movmad · nanmean · nanmedian · nanmin · nanstd · nansum · rmmissing · standardizeMissing
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how nanvar is executed, line by line, in Rust.
- View the source for nanvar in Rust on GitHub
- Learn how the RunMat runtime works
- Found a bug? Open an issue with a minimal reproduction.
About RunMat
RunMat is an open-source runtime that executes MATLAB-syntax code blazing on any GPU. It is licensed under the Apache 2.0 license.
- RunMat automatically optimizes your math for GPU execution on Apple, Nvidia, and AMD hardware. No code changes needed. Simulations that took hours now take minutes.
- Start running code in seconds. RunMat runs in the browser, on the desktop, or from the CLI. No license server, no IT ticket.