Autodesk AutoCAD Map 3D 2023
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Use Feature Data Objects (FDO) technology
About GIS Features
This map of a water distribution system is made up of features stored in a set of SDF files.
The feature source could be a database (such as Oracle, SQL Server, or MySQL), a file-based feature source (such as SDF or SHP), a web server (such as WFS), or a table of feature geometry data (such as Microsoft Access).
Once you connect to a feature source, you select the types of features to include in your map. Each type of feature is called a feature class . AutoCAD Map 3D 2023 toolset displays all the features from the selected features classes in your map, and each feature class becomes a layer in Display Manager. For example, a feature class called Roads contains individual streets and appears on a layer called Roads in Display Manager. You can apply a single style to this layer, and all the streets in the layer will use that style.
A schema is the definition of multiple feature classes and the relationships between them. It determines the criteria an individual feature must meet in order to be a member of a particular feature class. For some feature sources, you can add and edit a schema and its feature classes and properties. For more information about editing schemas, see About Schemas.
For data stores that support multiple-geometry feature classes (Oracle, WFS, SDF, PostGIS, MySQL, SQL Server Spatial, SQLite, and SQL Server), you can specify which geometries to add to the map for each feature class.
You use FDO to connect directly to a data source and work in its native format. Each data source type uses its own FDO provider , and each provider has different capabilities.
For example, Oracle supports locking on the feature level. When you check out a feature, other users cannot edit it, even though they can view your edits and edit other features in the feature source. Oracle also supports persistent locking, so the object stays locked until you check it back in.
SHP feature sources, on the other hand, support locking on the file level. When you check out a feature, its entire SHP file is locked. Other users cannot edit features from that file until you close the map, which releases your lock (even if you still have features checked out at the time). Be careful to check in your changes before you close the map.
Versioning allows multiple copies of a spatial dataset to be stored and tracked by date of creation, date of change, and so on. Not every FDO provider supports versioning.
About Creating and Editing Data
AutoCAD Map 3D toolset works on two types of objects: features and drawing objects.
- Features are GIS objects stored in external files and databases. Display and edit them in your map and then save the changes back to the original source. Use the options described in Working with Features.
- Drawing objects are AutoCAD objects stored within a map or retrieved from attached drawings using queries. Save changes to drawing objects in the current map or back to the attached source drawing depending on the source of each object.
AutoCAD Map 3D toolset works with both DWG objects and GIS features.
Use both AutoCAD Map 3D 2023 toolset and AutoCAD to edit features and drawing objects. Many AutoCAD commands work on both types of objects. Some AutoCAD commands can only be performed on a feature after you extract its geometry and edit it as a drawing object. You can then save your changes back to the original data store with no loss of precision.
Many AutoCAD Map 3D toolset Help topics are specific to one type of object or the other.
Topics that are for DWG objects are marked with this icon:
Topics that relate to GIS features have this icon:
About Coordinate Geometry (COGO)
Select and clear mapping check boxes as desired and click Convert.
You can select multiple sources to convert.
To apply a filter to the source data, right-click the data source and click Filter Source.
If necessary, you can change the coordinate system assigned to the source data. Right-click the source and click Set Coordinate System.
In the Data Mapping area, define the mapping between items in the source data and feature classes and attributes in the industry model data model.
If the source is DWG, you can create mappings from layers, entities, or blocks, to corresponding feature classes in the industry model. From the drop-down list, select Entity, Block Name,Layer, or Object Data.
To create mappings between particular attributes, click the attribute of interest in the source list, then click the drop-down list in the All Models column.
When you have completed the mapping for a source, you can save the mapping as a profile. You can later reload the profile for future conversions. From the dropdown at the bottom of the Source Data list, click Save.
To validate the connectivity of features and run design validation rules, select Reinitialize and Validate Topology.
This option will display any connectivity and rule errors encountered in the Topology Checker palette when the source data is converted.
When you have finished creating the mapping between the source and the industry model, click Convert.