numnodes — Return the number of nodes in a graph or digraph.
numnodes(G) returns the node count stored on a RunMat graph or digraph object.
Syntax
numnodes(G)Using numnodes with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how numnodes changes the result.
Run a small numnodes example, explain the result, then change one input and compare the output.
Related Graph functions
adjacency · bfsearch · conncomp · degree · dfsearch · digraph · distances · findedge · graph · indegree · neighbors · numedges · outdegree · predecessors · shortestpath · successors · toposort · treelayout
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how numnodes is executed, line by line, in Rust.
- View the source for numnodes 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.
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