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For example, the road unit system defined above can be used in US Highway projects. These unit systems can be added, removed, or modified, except for the 'Internal' unit system. This is because, as the code is executed, it converts all unit systems into a single unit system (internal unit). All other unit systems (Display Units) are units of parameters that the end user sees. As the code runs, all the unit systems that the user sees are converted to the Internal unit system. | ||||||
As stated above, the unit systems for the two parameters X1 and X2 are different. The end user sees this as X1=1000 yards and X2=1 mile, and inputs these values accordingly. | ||||||
The entire process is carried out using the Internal unit category. In this example, since the Internal unit system, with a Unit Type of Length, uses millimeters, X1=36000 inches and X2=63360 inches are converted to the units that the user wants to view. |
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