User guide

Page 34

visualise | communicate | ENGAGE The InstantAtlas Desktop Publisher

g the InstantAtlas Area Profile Template User Guide

Figure 48

If the WMS you want to use requires additional parameters, you can enter

these into the ‘Custom parameters’ field.

When you have finished choosing your advanced settings, click ‘OK’ to

return to the ‘Choose Your Background Images’ screen. The dialog may

have been updated to reflect any additional layers that have been chosen.

For example, Figure 49 shows we have chosen ‘OS 250k’ and ‘OS

miniscale’ as our two map layers.

Figure 49

There are a number of issues you should consider when using WMS

background mapping:

 Many WMS servers will only support certain coordinate systems

and these must match those of your base and contextual

geographies. The Publisher can re-project your map layers to

match the WMS projection if you have provided information about

the coordinate system(s) of your digital map layers.

 Currently in InstantAtlas you cannot control scale thresholds for

WMS layers.

 Many WMS servers will limit the scales that you can request data

for. So even though the layer may not appear in your map this

may be because you need to zoom in further.

 If the checkbox in the legend turns orange when you try to switch

the WMS layer on, and no check or tick mark in the box

(Figure 50), please ensure that the location you are viewing the

dynamic report from is added to your Flash Player trusted sites

(Global Security Settings). This is because an external request

has to be made from the location from which you are viewing the

dynamic report to the WMS server and this will in many instances

cause a security issue for the Flash Player. In many

circumstances, having the dynamic report on an external web

server (rather than a local or network drive), will overcome the

need for this.