Spatial Manager™ for AutoCAD - FAQs: Import

Introduction

• Objective of this section
  • To learn how to define import processes and their parameters and manage coordinate transformations

• Topics in this section
  • Sources: data sources
  • Import parameters: AutoCAD objects parameters, hatches, AutoCAD properties, Extended Entity Data (EED)
  • Transforming the coordinates: source and target, favorite coordinate systems, searching in the coordinate systems table and transformation parameters

How can I define a Transformation of coordinates in Spatial Manager™ for AutoCAD?

When you are Importing Features as AutoCAD objects using Spatial Manager™ for AutoCAD, you will see that you can choose a Transformation of coordinates from the source Features to the objects in the drawing, in the "Import" wizard. That means that the application will calculate a geometric transformation between the source and the target data, which will depend on the chosen CRS for the source (incoming Features) and for the target (imported AutoCAD objects) data. You can choose the appropriate CRSs by clicking on "CRS catalog...", in the CRS dropdown list for the source or for the target data. In the CRS table you can:

• Filter the CRSs by type (Geocentric, Projected, etc.)
• Choose a CRS by clicking on its row in the table
• Search CRSs by typing the search criteria in the "Search" box. You can type here as many words as you like separated by blanks. The application will find all the rows including all these words in a column of the table

After choosing a pair of valid CRS for a Transformation, you must choose the geographic Area to apply it to (the application will choose by default the most common Area for this Transformation)

Note 1: as you will see, the CRS dropdown list will include more and more CRSs as they have been previously chosen in other Transformation operations, so that you can choose your "favorite" CRSs directly from the dropdown list without having to access the CRS Table all the time

Note 2: if the application "knows" the CRS of the source data, it will be chosen by default. You will be able to modify this choice except in cases where only one CRS is valid; for example, for a KML or a KMZ file the only valid choice is the CRS WGS84 (SRID 4326), because these types of file are always defined using this CRS

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