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scale functions
Posted 2009年6月19日 GMT+2 17:301 Reply
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I am trying to scale a geometry object using a function. The documentation for the scale() function says this should be possible, but I keep getting errors as described below:
given a 3D geometry object g1, I've tried the following:
g2=scale(g1,1,1,3*z,0,0,0)
ERROR - ??? Undefined function or variable 'z'.
g2=scale(g1,1,1,'3*z',0,0,0)
ERROR - ??? Error using ==> geom3.scale at 78, zscale must be a real scalar
I've also tried similar approaches in the COMSOL GUI, but with no success.
Can anyone tell me how to apply a scale function?
Thanks!
Douglas Cook
Purdue University
given a 3D geometry object g1, I've tried the following:
g2=scale(g1,1,1,3*z,0,0,0)
ERROR - ??? Undefined function or variable 'z'.
g2=scale(g1,1,1,'3*z',0,0,0)
ERROR - ??? Error using ==> geom3.scale at 78, zscale must be a real scalar
I've also tried similar approaches in the COMSOL GUI, but with no success.
Can anyone tell me how to apply a scale function?
Thanks!
Douglas Cook
Purdue University
1 Reply
Last Post 2009年6月23日 GMT+2 15:31
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Posted:
2 decades ago
Hi Douglas,
The scale function takes real numbers as input, both for the scale factors and and the scale base point. To scale a geometry object g1 by a factor 3 in the z-direction, about (0,0,0), use
g2 = scale(g1,1,1,3,0,0,0);
or even shorter
g2 = scale(g1,1,1,3);
In the COMSOL GUI, this is equivalent to selecting Draw>Modify>Scale and setting the z Scale factor to 3.
Anders
The scale function takes real numbers as input, both for the scale factors and and the scale base point. To scale a geometry object g1 by a factor 3 in the z-direction, about (0,0,0), use
g2 = scale(g1,1,1,3,0,0,0);
or even shorter
g2 = scale(g1,1,1,3);
In the COMSOL GUI, this is equivalent to selecting Draw>Modify>Scale and setting the z Scale factor to 3.
Anders