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plottools

  

homothety

  

scale PLOT and PLOT3D data structures with the same ratio

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

homothety(p, a, pt_2d)

homothety(q, a, pt_3d)

Parameters

p

-

plot data structure

q

-

plot3d data structure

a

-

real number

pt_2d

-

(optional) list of two real numbers specifying the center of the homothety (for the 2-D case)

pt_3d

-

(optional) list of three real numbers specifying the center of the homothety (for the 3-D case)

Description

• 

The homothety command is a special case of the plottools[scale] command where the ratios of the scaling with respect to the axis are the same.

• 

There are several other commands in the plottools package that transform plots, and these are listed in the plottools help page. The plots[changecoords] and plots[display] commands can also be used to transform plots.

Examples

Homothety of a stellated icosahedron

withgeom3d:

icosahedronp1,pointo,0,0,0,1:

stellatep2,p1,10:

pdrawp2:

qplottools[homothety]p,3:

plots[display]p,q,scaling=constrained,lightmodel=light4,orientation=0,32

See Also

plot/structure

plot3d/structure

plots[changecoords]

plots[display]

plottools

plottools[scale]

 


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