Import point data from an ASCII (text) file or a Microsoft® Access .mdb file into a drawing - For mapping - Civil Engineering Blog

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Saturday, September 6, 2014

Import point data from an ASCII (text) file or a Microsoft® Access .mdb file into a drawing - For mapping

Importing points, such as survey point data collected by a data collector, is a quick and effective way to place points into a drawing.

Before you import points, you must create a point file format that describes the layout of the point data in the point data file.


The highest point number allowed in Civil 3D is 4,294,967,295. You can use point names or User Defined Properties to reference numbers greater than 4,294,967,295.

You can organize sets of user-defined properties in groups called user-defined property classifications. You can then associate a classification with a point group, and then you will have those properties available to use with the points in that point group.

For example, if you have a survey that contains data about the trees on the site, you can start by creating a classification called Trees. Then create properties that are specific to the classification. For example, in the Tree Classification some properties you might create are name, species, and height.

Classifications are displayed as a collection in User-Defined Property Classifications on the Settings tab of Toolspace. Each property you create is displayed in the Toolspace list view.

You can use user-defined properties to:

Import points
Create point groups
Label points
Create point tables

You can add the imported points to a point group, make adjustments to the data as it is imported, including elevation adjustments, coordinate transformation, or coordinate data expansion, encounter how the imported points are numbered as they are created.

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