| 29 | | There are use cases where it is desirable for a line on a map to be rendered with a thickness that corresponds directly to the real size of the feature it represents. For example, if the polyline representing a pipeline were rendered in a way that accurately represented its real size, it would allow the user to see how it was positioned in relation to adjacent features such as trees or buildings. |
| | 29 | There are use cases where it is desirable for a line on a map to be rendered with a thickness that corresponds directly to the real size of the feature it represents. For example, if the polyline representing a pipeline were rendered in a way that accurately represented its real size, it would allow the user to see how it was positioned in relation to adjacent features such as trees or buildings. Another use for real-world line widths is if the accuracy of the data is not exact - for example, if a property line has an accuracy of 5ft to either side, it can be drawn 10ft wide to represent the potential error. It is also often desirable, from a cartographic standpoint, to have line widths vary as you zoom in or out on the map. This allows features such as roads to be rendered with a more realistic size relative to other features on the map. !MapGuide currently supports Map Space in the specification of symbol and label sizes, and this RFC proposes extending that support to polylines and the lines that define polygon boundaries. |
