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gnucap:user:netlist_import_and_export [2024/08/15 22:01] aldavis [Adding physical position] |
gnucap:user:netlist_import_and_export [2025/01/07 05:08] (current) felixs [Adding physical position] add geometry link |
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| ==== Adding physical position ==== | ==== Adding physical position ==== | ||
| - | Now we use the attributes to specify the location. We need to locate the various objects. In most cases, we need to specify some point of every object that will identify its location. Some programs use some notion of a "center", which is ambiguous. We will use the electrical connection points, often called "pins", as the location points for things that have an electrical connection. For objects that do not have electrical connections, reference points can be used. | + | Now we use the attributes to specify the location. We need to locate the various objects in a suitable [[gnucap:user:schematic_geometry|coordinate system]]. In most cases, we need to specify some point of every object that will identify its location. Some programs use some notion of a "center", which is ambiguous. We will use the electrical connection points, often called "pins", as the location points for things that have an electrical connection. For objects that do not have electrical connections, reference points can be used. |
| We will number the pins, by position, 1, 2, ... Then we use x1,y1, and so on to locate them. Usually one of them is adequate to locate an object. The others can "float", allowing the actual location to be determined by the surroundings. It is permissible to overspecify locations, provided they are self-consistent, and consistent with connections. | We will number the pins, by position, 1, 2, ... Then we use x1,y1, and so on to locate them. Usually one of them is adequate to locate an object. The others can "float", allowing the actual location to be determined by the surroundings. It is permissible to overspecify locations, provided they are self-consistent, and consistent with connections. | ||