discretize — Group numeric data into bins.
discretize(X,edges) returns one-based bin numbers for values in X using numeric bin edges.
Syntax
varargout = groupingBuiltin(args...)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
args | Any | Variadic | — | MATLAB-compatible arguments. |
Returns
| Name | Type | Description |
|---|---|---|
varargout | Any | Builtin outputs. |
Returned values from discretize depend on how many outputs the caller requests.
Errors
| Identifier | When | Message |
|---|---|---|
RunMat:grouping:InvalidInput | Inputs are malformed, have incompatible lengths, or request unsupported grouped output. | grouping builtin: invalid input |
RunMat:grouping:CallbackFailed | A grouped callback fails or returns incompatible outputs. | grouping builtin: callback failed |
RunMat:grouping:TooLarge | The requested dense or combinatorial output exceeds RunMat's materialization limit. | grouping builtin: output is too large |
How discretize works
- Supports explicit edge vectors, positive scalar bin counts, string labels, and the
IncludedEdgename-value option; the default is left-inclusive/right-exclusive with the final edge included. - Out-of-range and NaN inputs return NaN for numeric bin output or missing strings for labeled output.
Example
Bin values
Y = discretize([0.2 1.5],[0 1 2])Expected output:
Y = [1 2]Using discretize with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how discretize changes the result.
Run a small discretize example, explain the result, then change one input and compare the output.
Related Array functions
Grouping
accumarray · combinations · findgroups · groupcounts · grp2idx · splitapply
Sorting Sets
argsort · intersect · ismember · ismembertol · issorted · issortedrows · setdiff · setxor · sort · sortrows · union · unique
Shape
blkdiag · cat · circshift · diag · flip · fliplr · flipud · horzcat · ipermute · kron · permute · repelem · repmat · reshape · rot90 · squeeze · toeplitz · tril · triu · vertcat
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how discretize is executed, line by line, in Rust.
- View the source for discretize 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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