几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 - 查看单个帖子 - Which distance is better, point to point distance or point to line ?pl explain why?

Dan Mahoney • There really is no difference. The line has a central or centroid point that is referenced when asking for distance, so point to line is really a point to point distance.
The important factor is how does your software determine the distance. In PC-DMIS, I recommend 3D and choosing the "Perpendicular to" radio button. This will give a distance between the two points that is perpendicular to the surface vector the first point is on. If you choose "parallel to", it will give you the direct distance between the two points regardless of vector, essentially giving you the hypotenuse distance. So, be aware of the data your particular software provides.

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借用达朗贝尔的名言：前进吧，你会得到信心!
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2012-11-19, 08:28 AM	#2
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	回复: Which distance is better, point to point distance or point to line ?pl explain why? Dan Mahoney • There really is no difference. The line has a central or centroid point that is referenced when asking for distance, so point to line is really a point to point distance. The important factor is how does your software determine the distance. In PC-DMIS, I recommend 3D and choosing the "Perpendicular to" radio button. This will give a distance between the two points that is perpendicular to the surface vector the first point is on. If you choose "parallel to", it will give you the direct distance between the two points regardless of vector, essentially giving you the hypotenuse distance. So, be aware of the data your particular software provides. __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]