Creating Buffers Around Map Features - Autodesk 15606-011408-9330 - MAPGUIDE R6.3 SITE LIC-UPG R6 User Manual

Creating Buffers Around Map Features

Help Index
buffers
You can select map features in several different ways:
Use the mouse to select features.


Use one of the options on the Select menu.


You can also combine multiple selection techniques.
For step-by-step instructions, choose Help
and look up "selecting map features."
Note If a map includes multiple selectable polygon layers, some selection tech-
niques (such as Select
the mouse to drag a rectangle around map features) will select features from all
selectable layers. When selected features on different layers overlap one another,
the selection color for each layer varies depending on how many features overlap.
Portions of unselected map features also change color if a feature in a layer
beneath them is selected. These color changes differentiate the different layers.
A common GIS spatial query involves finding all features within a specified
distance, or a buffer, of one or more other features. A buffer is a polygon that
defines its boundaries at a specified distance from a point, line, or another
polygon. For example, you could locate all customers within one mile of a
number of store locations. As part of this query, you might also want to see
the area that defines the spatial query. Autodesk MapGuide Author can create
buffer zones around one or more selected features. You can then select
features that fall within these buffers.
You use the View

For step-by-step instructions, choose Help
and look up "buffers."
Radius, Select Polygon, Select
 
Buffer command to create buffers.
Creating Buffers Around Map Features
Contents, click the Index tab,

Within, and using

Contents, click the Index tab,

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