User guide

Page 29

visualise | communicate | ENGAGE The InstantAtlas Desktop Publisher

g the InstantAtlas Area Profile Template User Guide

Figure 40

You can see that the ‘Min extent’ and ‘Max extent’ values have been

edited. The coarser (or less detailed) background mapping layer is set to

display for map widths between 50,000 and 100,000,000 units. The more

detailed background mapping layer is set to display for map widths

between 0 and 50,000 map units. As you zoom into the map in this report,

you will reach a point at which the area shown is less than 50,000 map

units wide. At this point, the background mapping will switch from one

layer (the images referenced by ‘course.xml’) to another (the images

referenced by ‘detailed.xml’).

If you have multiple layers of background mapping, you must ensure

that the ranges you specify for the layers do not overlap.

If you wish to make more advanced settings for background mapping, click

the ‘Advanced’ button for a layer. The ‘Choose Map Features’ dialog will

appear (Figure 41).

Figure 41

By default, only the background images that overlap (or intersect) the base

geography will be published in the report. As the maps in InstantAtlas