plotVelocityHeatmap: Plot cell velocity over time
In kueckelj/celltracer: An Analysis-Toolbox for High-Throughput Cell Imaging Data

Uses the design of a heatmap to visualize the velocity dynamics over time across a variable of interest.

plotVelocityHeatmap(
  object,
  across = "cl_condition",
  across_subset = NULL,
  phase = "all",
  phase_cluster = "first_tmt",
  n_cells = 100,
  color = viridis::viridis(15),
  smooth = TRUE,
  smooth_span = 0.25,
  arrange_rows = "maxima",
  verbose = TRUE,
  in_shiny = FALSE
)

`object`	A valid cell tracer object.
`across`	Character value. Denotes the discrete variable in the data.frame across which the variables of interest are to be analyzed or displayed. Valid input options can be obtained via `getAcrossOptions()`.
`across_subset`	Character vector. The groups of interest that the `across`- variable contains. Valid input options can be obtained via `getVariableValues()`.
`phase`	Character value. Refers to the phase of the experiment. Valid inputs are: 'before_tmt' Uses the data that refers to the time before the treatment. 'first_tmt' Uses the data that refers tot the time after the treatment. 'entire' Uses the complete data of the entire timespan. Note: This argument is ignored if the experiment set up did not include any treatment or the treatment started right from the beginning.
`phase_cluster`	Character value. Refers to the phase of the experiment from which to take the clustering variables. Valid inputs are: 'before_tmt' Uses the data that refers to the time before the treatment. 'first_tmt' Uses the data that refers tot the time after the treatment. Note: This argument is ignored if the experiment set up did not include any treatment or the treatment started right from the beginning.
`n_cells`	Numeric calue. Determines the number of cells that are randomly chosen from every group to be displayed. Useful to keep plots insightful and aesthetically pleasing.
`color`	The colorspectrum to be used.
`smooth`	Logical. If set to TRUE the values are smoothed.
`smooth_span`	NUmeric value. Denotes the smoothing span used.
`arrange_rows`	Character value. Either 'maxima' or 'none'.
`verbose`	Logical. If set to TRUE informative messages regarding the computational progress will be printed. (Warning messages will always be printed.)