Description Usage Arguments Value Author(s)
View source: R/sin_cell_ordering_class.R
This function fits a sinsoidal model to gene expression data and computes cell-order estimates on cell-cycle (modulo rotation), as well as the gene-specific cell-cycle features, including amplitude, phase and noise variation.
| 1 2 3 | 
| cycle_data | a N x G matrix, where N is number of cells, G number of genes | 
| celltime_levels | The number of phase classes chosen (The deafult is 100). It splits up circle or the range (0, 2pi) into celltime_levels uniform splits. | 
| num_iter | Number of iterations. If not specified, number of iteration is set to be maxiter (the maximum number of iteratoins). | 
| save_path | The file path to save the RDA file containing the information on gene characteristics and the cell ordering times. Default is NULL in which case, it will not save output | 
| fix.phase | if TRUE, the phase will be fixed in inference for the genes, default is FALSE | 
| phase_in | if fix.phase is TRUE, then phase_in is G x 1 vector of user input gene phases. Default is NULL as is the case if fix.phase=FALSE. | 
| verbose | if TRUE, prints the loglikelihood at each step/iteration. If FALSE,just prints final loglikelihood. | 
| maxiter | The maximum number of iterations. Default = 500. | 
| freq | The frequency of the sinusoidal genes. The default is 1. | 
Returns a list containing the following items
| cell_times | estimated cell times from Gibbs sampler | 
| amp | The estimated amplitudes of the genes | 
| phi | The estimated phase angles of the genes | 
| sigma | The estimated non sinusoid signal variation of the genes | 
| loglik | The model log likelihood of the fit | 
| signal_intensity | The intensity of each cell in each of the cell times classes | 
Kushal K Dey, Joyce Hsiao
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