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Chapter 6 Planning and Designing Maps
Planning the Data
In planning the data you will need, the data engineer and map authors
should consider the following questions along with possible solutions:
How should the data look? For example, what colors, symbols, linestyles,
and fills will you use?
Does the data relate to a database table? If so, create an OLE DB data source
for that database, and determine which data you will use as the key.
Is it point/text data or line/polygon data? If text, do you need to rotate or
resize the text differently? Does the location of the text need to be “fixed,”
that is, placed precisely? You can add columns in the table that indicate
the rotation angle, height, and width, so that Autodesk MapGuide can
rotate and resize the text accordingly.
Do you need to display database information thematically? If so, which
column contains the theme data?
How large is the data set? Do you want to show different versions of the
data, each of which is used at different display ranges?
Will you need to use raster data? Where is the raster data referenced? How
is this data georeferenced?
Planning Layers
After you have created, gathered, converted, and prepared all of your data,
authors can use it to create their maps. Remember that when you create a
map and add data to it, you add the data to layers. Therefore, you need to
plan the layer to which you will add the data carefully. Before you create the
layer, consider the following questions:
What naming standard are you using for layers?
Do you want to organize layers into layer groups?
Do you want to use a different name in the Viewer legend (and in the View
tab of the Autodesk MapGuide Author Map Explorer)? You can enter a sep-
arate name for the layer in the Legend Label box on the General tab of the
Map Layer Properties dialog box. This is useful if you want to have long
descriptive names appear in the Design tab of the Autodesk MapGuide
Author Map Explorer when you’re working with the map, but you want
shorter names to appear for Viewer users.