Geo Link: Difference between revisions
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: When multiple Geo Links would match a specific feature, the most specific Geo Link (i.e. the one with the most matching [[Attribute]]s) would be leading. However, it is possible for multiple Geo Links to "tie" in how specific they are. In that case, the Geo Link with the highest priority takes precedence. | : When multiple Geo Links would match a specific feature, the most specific Geo Link (i.e. the one with the most matching [[Attribute]]s) would be leading. However, it is possible for multiple Geo Links to "tie" in how specific they are. In that case, the Geo Link with the highest priority takes precedence. | ||
; Geometry mode | |||
: Optionally a feature's geometry can be altered using the Geometry Mode and the line and point buffer values. This can be useful when the data consist of points or lines and have to be converted to a multi-polygon. | |||
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Revision as of 10:22, 12 January 2023
A Geo Link is a subdefinition for a Geo Plugin. It provides a specific filter and operation to perform on data found in the source of the Geo Plugin. A Geo Plugin can have multiple Geo Links, each of which can hold a definition for which features to import and how to interpret them.
Geo Links are used for importing vector data.
A Geo Link provides the following linkage options:
- Type definition
- The data matching the Geo Link filter will be imported as Items with the selected definition. For example, when the Geo Plugin is for Buildings, features matched by the Geo Link are added to the Project with that specified Function.
- Matching Attributes
- A list of Attributes which a feature should have in order to be imported. Each attribute can be configured to merely be present, or to need to match one of a list of values. This allows for filtering on a specific group of features only.
- Mapped Attributes
- A list of Attributes which are renamed on import. If the specified Attribute is present in a feature in the data, the resulting Item will have an Attribute with the specified mapped name with the same value.
- Priority
- When multiple Geo Links would match a specific feature, the most specific Geo Link (i.e. the one with the most matching Attributes) would be leading. However, it is possible for multiple Geo Links to "tie" in how specific they are. In that case, the Geo Link with the highest priority takes precedence.
- Geometry mode
- Optionally a feature's geometry can be altered using the Geometry Mode and the line and point buffer values. This can be useful when the data consist of points or lines and have to be converted to a multi-polygon.
Notes
- Priority does not affect whether non-overlapping Items, such as Buildings, are placed rather than others, but solely which Geo Link is used to interpret a feature, given multiple Geo Links potentially match it.
- Matching Attributes for Geo Links can contain multiple values. Only one such value needs to be present in a feature to match. However, having more matching features in the same Attribute does not incur more significance than having just a single value matching in the same Attribute. In these cases priorities need to be assigned.