nansum — Compute sums while ignoring NaN values.
nansum(A, ...) is a compatibility alias for sum(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 nansum works
- All supported
sumdimension and output-class options are forwarded.
Example
Ignore NaN values
s = nansum([1 NaN 3], 'all')Expected output:
s = 4Using nansum with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how nansum changes the result.
Run a small nansum example, explain the result, then change one input and compare the output.
Related Missing functions
anymissing · fillmissing · ismissing · missing · movmad · nanmean · nanmedian · nanmin · nanstd · nanvar · rmmissing · standardizeMissing
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how nansum is executed, line by line, in Rust.
- View the source for nansum 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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