This page (revision-7) was last changed on 25-Feb-2015 15:33 by Alison Bennett

This page was created on 13-Sep-2012 16:53 by Alison Bennett

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5 23-Feb-2015 16:48 1 KB Alison Bennett to previous | to last
4 23-Feb-2015 16:20 221 bytes Alison Bennett to previous | to last
3 14-Nov-2014 14:11 19 KB Sarah MacLean to previous | to last
2 19-Oct-2012 13:03 19 KB Sarah MacLean to previous | to last
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Page References

Incoming links Outgoing links
SectionE.3
SectionE.3

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At line 40 changed one line
The way information has been modelled in the HER text databases will have a significant influence on the way the spatial information is constructed. The current data model may be based on MIDAS (Lee 1998) or derived from earlier monument-focused systems. Different attributes or data fields from the text database will be referenced in the GIS and used to create different layers or themes. A problem that will need to be accounted for is that data may not be entirely consistently recorded throughout the database: for example a monument-focused database may have contained some information about events and the HER may be in the process of implementing the event-monument-source data model. In developing HER layers in the GIS the following will need to be considered:
The way information has been modelled in the HER text databases will have a significant influence on the way the spatial information is constructed. The current data model may be based on MIDAS ([Lee 1998|Bibliography#Lee 1998|target='_blank']) or derived from earlier monument-focused systems. Different attributes or data fields from the text database will be referenced in the GIS and used to create different layers or themes. A problem that will need to be accounted for is that data may not be entirely consistently recorded throughout the database: for example a monument-focused database may have contained some information about events and the HER may be in the process of implementing the event-monument-source data model. In developing HER layers in the GIS the following will need to be considered:
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It is important to be aware of the implications of the scale of mapping against which heritage objects are captured or displayed. Map making is a process of reducing complexity and maps are drawn in a way that emphasises important features while suppressing unimportant ones. This is the 'selection and simplified representation of detail appropriate to the scale and/or the purpose of a map' (ICA 1973). Thus, if the width of a road on a 1:1,000,000 map were to be accurately measured, its representation would be considerably wider than the a real-world width of the road. As roads are important features on maps they need to be emphasised and, as a result, on the map any adjacent features are shifted.
It is important to be aware of the implications of the scale of mapping against which heritage objects are captured or displayed. Map making is a process of reducing complexity and maps are drawn in a way that emphasises important features while suppressing unimportant ones. This is the 'selection and simplified representation of detail appropriate to the scale and/or the purpose of a map' ([ICA 1973|Bibliography#ICA 1973|target='_blank']). Thus, if the width of a road on a 1:1,000,000 map were to be accurately measured, its representation would be considerably wider than the a real-world width of the road. As roads are important features on maps they need to be emphasised and, as a result, on the map any adjacent features are shifted.
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This page (revision-7) was last changed on 25-Feb-2015 15:33 by Alison BennettTop