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NetDelete[net,n]

deletes the n^(th) layer from a NetChain or NetGraph.

NetDelete[net,"name"]

deletes a named layer.

NetDelete[net,{spec1,spec2,…}]

deletes several layers simultaneously.

NetDelete[graph,NetPort["name"]]

deletes an output or state-input port from a NetGraph.

NetDelete[graph,{NetPort["name1"],NetPort["name2"],…}]

deletes several output or state-input ports simultaneously.

Details
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Examples  
Basic Examples  
Scope  
Possible Issues  
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NetDelete

NetDelete[net,n]

deletes the n^(th) layer from a NetChain or NetGraph.

NetDelete[net,"name"]

deletes a named layer.

NetDelete[net,{spec1,spec2,…}]

deletes several layers simultaneously.

NetDelete[graph,NetPort["name"]]

deletes an output or state-input port from a NetGraph.

NetDelete[graph,{NetPort["name1"],NetPort["name2"],…}]

deletes several output or state-input ports simultaneously.

Details

  • NetDelete is typically used to remove a layer or a port in a net.
  • Layers can only be deleted from a chain or graph if their inputs and outputs are the same size, or if they are at the periphery of the network.

Examples

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Basic Examples  (2)

Delete a layer from a chain:

Wolfram Language code: chain = NetChain[{3, Ramp, 4}]
Wolfram Language code: NetDelete[chain, 2]

Delete an output port from a graph:

Wolfram Language code: graph = NetGraph[{3, Ramp, 4}, {1 -> 2 -> 3 -> NetPort["Output1"], 2 -> NetPort["Output2"]}]
Wolfram Language code: NetDelete[graph, NetPort["Output2"]]

Scope  (5)

Delete a layer from a chain, specifying the layer by name:

Wolfram Language code: chain = NetChain[<|"a" -> 3, "b" -> Ramp, "c" -> 4|>]
Wolfram Language code: NetDelete[chain, "b"]

Delete a layer from a graph:

Wolfram Language code: graph = NetGraph[{3, Ramp, 4}, {1 -> 2 -> 3}]
Wolfram Language code: NetDelete[graph, 3]

Delete multiple layers from a chain:

Wolfram Language code: chain = NetChain[{2, Ramp, 3, Ramp, 4}]
Wolfram Language code: NetDelete[chain, {2, 4}]

Delete multiple output ports from a graph:

Wolfram Language code: graph = NetGraph[{2, Ramp, 3, Ramp, 4}, {1 -> 2 -> 3 -> 4 -> 5 -> NetPort["Output1"], 2 -> NetPort["Output2"], 4 -> NetPort["Output3"]}]
Wolfram Language code: NetDelete[graph, {NetPort["Output2"], NetPort["Output3"]}]

Delete an input state port from a graph:

Wolfram Language code: graph = NetGraph[ {LongShortTermMemoryLayer[2, "Input" -> {"Varying", 2}]}, {NetPort["InitialState"] -> NetPort[1, "State"], NetPort["InitialCellState"] -> NetPort[1, "CellState"]}]
Wolfram Language code: NetDelete[graph, NetPort["InitialState"]]

Possible Issues  (1)

If the layer being deleted is in the interior of a chain or graph, it must have exactly one input and output, which must be the same shape:

Wolfram Language code: chain = NetChain[<|"a" -> 2, "b" -> Ramp, "c" -> 3, "d" -> Ramp|>]; NetDelete[chain, "c"]
Wolfram Research (2018), NetDelete, Wolfram Language function, https://reference.wolfram.com/language/ref/NetDelete.html.

Text

Wolfram Research (2018), NetDelete, Wolfram Language function, https://reference.wolfram.com/language/ref/NetDelete.html.

CMS

Wolfram Language. 2018. "NetDelete." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/NetDelete.html.

APA

Wolfram Language. (2018). NetDelete. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NetDelete.html

BibTeX

@misc{reference.wolfram_2026_netdelete, author="Wolfram Research", title="{NetDelete}", year="2018", howpublished="\url{https://reference.wolfram.com/language/ref/NetDelete.html}", note=[Accessed: 12-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_netdelete, organization={Wolfram Research}, title={NetDelete}, year={2018}, url={https://reference.wolfram.com/language/ref/NetDelete.html}, note=[Accessed: 12-June-2026]}