plot_dot_attr3: Create scatter plot of three attributes
In vicstefanou/ViSCA: Cell-Movie Analysis and Visualization

Description Usage Arguments Details Value

Creates the X-Y-Z scatter plot of three numeric attributes of a lineage or division tree.

plot_dot_attr3(tree, treeT = c("LT", "DT"), attr1, unit1 = "", attr2,
  unit2 = "", attr3, unit3 = "", attrC = "", unitC = "", NC = NULL,
  attrS = "", sizeL = 0.8, save = FALSE, savePars = list(w = 2500, h =
  2000, res = 350, path = getwd(), name = "my_dot_attr3"))

`tree`	The lineage or division tree, an object of class `"igraph"`.
`treeT`	A character string naming the type of `tree`: `"LT"` if `tree` is a lineage tree `"DT"` if `tree` is a division tree
`attr1, attr2, attr3`	The names of the attributes in the `tree`, character strings. Each one can be any numeric attribute, as returned from `get_attr_names`, except for `"colony"`, `"generation"` and `"frame"`.
`unit1, unit2, unit3`	The units of the corresponding `attr`, character strings. Each one should be in the format `"<string>,<number>"`, where `",<number>"` represents the power and is optional (e.g. `"m"` for meters and `"cm,3"` for cubic centimeters). The default value of each is the empty character `""`, which implies that the corresponding `attr` is in arbitrary units.
`attrC`	The name of the attribute in the `tree` by which the cells will be colored, a character string. It can be any numeric or boolean attribute, as returned from `get_attr_names`. Coloring is applied to all depicted cells, except for cells with `NA` value in this attribute which are colored gray. When the default value `""` (the empty character) is used, data points' color is the default.
`unitC`	The unit of `attrC`, a character string. It should be in the format `"<string>,<number>"`, where `",<number>"` represents the power and is optional (e.g. `"m"` for meters and `"cm,3"` for cubic centimeters). The default value is the empty character `""`, which implies that `attrC` is in arbitrary units. This argument is ignored in case `attrC = ""`.
`NC`	Number of colonies in the movie (if `attrC = "colony"`) or number of generations in the movie (if `attrC = "generation"`), a non-zero positive integer value. This argument is ignored in case `attrC != "colony"` and `attrC != "generation"`.
`attrS`	The name of the attribute in the `tree` by which the cells will be shaped, a character string. It can be any boolean attribute, as returned from `get_attr_names`. Cells are represented by dots or squares if their value in this attribute is `TRUE` or `FALSE`, respectively. When the default value `""` (the empty character) is used, data points' shape is the default.
`sizeL`	Size of explanatory legends, a non-zero positive numeric value. The default value is `0.8`. This argument is ignored in case `attrC = ""` or `attrC` is a boolean attribute or `attrC = "colony"` or `attrC = "generation"`.
`save`	A logical value (`TRUE` or `FALSE`) indicating whether the generated plot will be saved in a `.png` file or displayed in the Plots Pane of RStudio, respectively. The default value is `FALSE`.
`savePars`	A named list specifying the parameters of the generated image file. This argument is ignored in case `save = FALSE`. Elements of the list are the following: `w` The width of the image file in pixels, a non-zero positive integer value. The default value is `2500`. `h` The height of the image file in pixels, a non-zero positive integer value. The default value is `2000`. `res` The resolution of the image file in pixels per inch (ppi), a non-zero positive integer value. The smaller this value, the larger the plot area in inches, and the smaller the text relative to the graph itself. The default value is `350`. `path` A character string naming the directory where the image file will be saved (excluding the last `"/"`). If it does not contain an absolute path, the image file will be saved relative to the current working directory `getwd()`. The default value is the current working directory `getwd()`. NOTE: The components should be separated by `"/"` on Windows. `name` The image file name, a character string. The suffix `".png"` is added automatically. The default value is `"my_dot_attr3"`.

Each data point (x,y,z) represents the value of attr1, attr2 and attr3 of a cell, respectively. The horizontal axis of the plot corresponds to the x-axis, the vertical to the z-axis and the diagonal to the y-axis. The scatter plot is created for all cells that are included in the analysis, as returned from get_cells, except for cells with NA value in attr1 or attr2 or attr3.

By default, all data points are purple dot points.

The linear regression plane is also drawn on the plot. X, Y are the predictor variables and Z is the response. The parameters of the regression plane are found using the linear least squares method provided by lm.

A named list with the following components:

Ncells

Number of cells, a non-zero positive integer value.

regression

A named list with the following components:

a1 is the slope of the regression plane in the direction of x, a numeric value
a2 is the slope of the regression plane in the direction of y, a numeric value
b is the y-intercept of the regression plane, a numeric value
r2 is the R-squared coefficient of the regression plane as returned from summary.lm, a numeric value in the range [0, 1]