Autodesk 15606-011408-9008 - MAPGUIDE R6.3 NAMED-100U PK, Руководство пользователя

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Working with Attribute Data
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For points/symbols and text, you can store coordinates in a database instead
of an SDF. You can update coordinates in a standard database application
quite easily, and you can rotate, align, and size text based on fields in the
database.
The following sections explain the information you need to know about
using the two SDF conversion applications.
SDF Loader
You can use the SDF Loader to convert several file formats individually, or
you can create batch files to convert multiple files. The batch file can run the
SDF Loader and any necessary third-party programs to convert the files. This
is an efficient way to set up your source data and create your SDFs. For
complete information, refer to the
SDF Loader Help .
SDF Component Toolkit
You can use the SDF Component Toolkit and a programming language, such
as Visual Basic or C++, to create an application that works with SDFs. The SDF
Component Toolkit provides powerful access to SDFs, including the ability
to work with individual features within an SDF. This means that your
program could convert individual features in the SDF rather than the whole
file at once, so you have more control of your conversion than you do with
the SDF Loader. For complete information, refer to the
SDF Component Toolkit
Help .
Working with Attribute Data
Attribute data is data that can be linked to the spatial data in maps to provide
the user with information about those spatial features. Examples of attribute
data are population, area, name, total sales, a URL link to a related Web page,
style data, and any other data you want to associate with a spatial feature.
When you link attribute data to your spatial data, the data can be used in one
of four ways: to display the names of the features, to set the width (of
symbols), height and rotation (of symbols and text), and alignment (of text),
to create themes, or to generate reports. The following sections describe how
to prepare and use your attribute data.