colorByAllVariables: Produce a collection of png files with mapper graphs colored...
In BallMapper: The Ball Mapper Algorithm

Produce a collection of png files with mapper graphs colored by following coordinates (so that the number of files is the same as the number of coordinates).

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colorByAllVariables(outputFromBallMapper, points,
  fileNamePrefix = "output_", defaultXResolution = 512,
  defaultYResolution = 512)

`outputFromBallMapper`	an output from the BallMapper function
`points,`	a collection of input points in a form of a data frame used to create Ball Mapper graph.
`fileNamePrefix`	a prefix of a file name. A plot that uses i-th variable as a coloring will contain this string as a prefix followed by the number i. Set to "output_" by default.
`defaultXResolution`	store a default resolution of image in x direction. Set to 512 by default.
`defaultYResolution`	store a default resolution of image in y direction. Set to 512 by default.