doLeidenCluster | R Documentation |
cluster cells using a NN-network and the Leiden community detection algorithm
doLeidenCluster(
gobject,
name = "leiden_clus",
nn_network_to_use = "sNN",
network_name = "sNN.pca",
python_path = NULL,
resolution = 1,
weight_col = "weight",
partition_type = c("RBConfigurationVertexPartition", "ModularityVertexPartition"),
init_membership = NULL,
n_iterations = 1000,
return_gobject = TRUE,
set_seed = T,
seed_number = 1234
)
gobject |
giotto object |
name |
name for cluster |
nn_network_to_use |
type of NN network to use (kNN vs sNN) |
network_name |
name of NN network to use |
python_path |
specify specific path to python if required |
resolution |
resolution |
weight_col |
weight column to use for edges |
partition_type |
The type of partition to use for optimisation. |
init_membership |
initial membership of cells for the partition |
n_iterations |
number of interations to run the Leiden algorithm. If the number of iterations is negative, the Leiden algorithm is run until an iteration in which there was no improvement. |
return_gobject |
boolean: return giotto object (default = TRUE) |
set_seed |
set seed |
seed_number |
number for seed |
This function is a wrapper for the Leiden algorithm implemented in python, which can detect communities in graphs of millions of nodes (cells), as long as they can fit in memory. See the https://github.com/vtraag/leidenalgleidenalg github page or the https://leidenalg.readthedocs.io/en/stable/index.htmlreadthedocs page for more information.
Partition types available and information:
RBConfigurationVertexPartition: Implements Reichardt and Bornholdt’s Potts model with a configuration null model. This quality function is well-defined only for positive edge weights. This quality function uses a linear resolution parameter.
ModularityVertexPartition: Implements modularity. This quality function is well-defined only for positive edge weights. It does not use the resolution parameter
Set weight_col = NULL to give equal weight (=1) to each edge.
giotto object with new clusters appended to cell metadata
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