View source: R/calc_perturbation.R

calc_perturbation | R Documentation |

Calculates average expression changes of all nodes except trigger and finds the perturbed node count for a given node.

```
calc_perturbation(input_graph, node_name, how = 1, cycle = 1, limit = 0)
```

`input_graph` |
the graph object that was processed with priming graph in previous step. |

`node_name` |
The node that is trigger for simulation. |

`how` |
The change of count of the given node in terms of fold change. |

`cycle` |
The iteration of simulation. |

`limit` |
The minimum fold change which can be taken into account for perturbation calculation on all nodes in terms of percentage. |

calc_perturbation calculates mean expression changes of elements except trigger after the change in the network in terms of percentage. It also calculates the number of nodes that have expression changes after the change occur in the network. The function determines the perturbation efficiency and number of perturbed nodes after given change with how, cycle and limit parameter.

a tibble with two columns, the perturbation efficiency and number of perturbed nodes.

```
data('minsamp')
minsamp%>%
priming_graph(competing_count = Competing_expression,
miRNA_count = miRNA_expression)%>%
calc_perturbation('Gene6', how= 3, cycle = 4)
minsamp%>%
priming_graph(competing_count = Competing_expression, miRNA_count = miRNA_expression,
aff_factor = c(energy,seed_type), deg_factor = region)%>%
calc_perturbation('Gene6',3, cycle = 4)
```

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