Here are some tests and R&D with Particle Flow Data Operator ( Toolbox#3 )

-Color by distance (random distance + color + scale )
Download maxfile ( Max 2014 )

-Color by velocity
Download maxfile ( Max 2014 )

-Constraint axis (The helper control the axis value)
Download maxfile ( Max 2014 )

-Create particles between 2 points
Download maxfile ( Max 2014 )

-Create particles between 2 points, with curve control
Download maxfile ( Max 2014 )

-Scale by proximity
Download maxfile ( Max 2014 )

-Random color
Download maxfile ( Max 2014 )

-Scale by map/color
Download maxfile ( Max 2014 )

-Impulsion
Download maxfile ( Max 2014 )

Particle Flow Data Operator ( Toolbox#3 )