Tag Archives: ArcGIS

LiDAR Analysis Toolkit for ArcGIS

Local Relied Model of Old Sarum, Salisbury, WIlts. Based on Environment Agency LiDAR data.

Local Relied Model of Old Sarum, Salisbury, WIlts. Based on Environment Agency LiDAR data. Produced using the LiDAR Analysis Toolkit.

Archaeogeomancy were pleased to be commissioned to produce a self contained ArcGIS Toolkit for the analysis of LiDAR data.  Continue reading

Planning Application assessments; automation using ArcPy

The Machine by halfrain

The Machine by halfrain

Archaeogeomancy were pleased to be commissioned to build a system to automate an existing workflow for handling and reporting on geospatial information. The workflow is used by a major land management organisation for evaluating and responding to planning applications on behalf of their clients, the property or landowners. Automation allows non-specialists to undertake the map production and saves considerable time and money.  Continue reading

LiDAR, Local Relief Models and Sketchfab

Cranbrook Castle; LiDAR based Digital Terrain Model (DTM)

Cranbrook Castle; LiDAR based Digital Terrain Model (DTM)

The following visualisations were produced as part of the Fingle Woods and Castle Drogo Aerial Survey Analysis and Interpretation project, recently completed for the National Trust. There is a visualisation for each hillfort in the study area: Prestonbury Castle, Wooston Castle and Cranbrook Castle.

The visualisations were produced from a Digital Terrain Model (DTM) based on LiDAR data provided by Bluesky at 25cm resolution. This DTM was also used to produce a Local Relief Model using one of the ArcGIS tools currently being developed by Archaeogeomancy for the National Trust. The LRM was then draped over the DTM, exported as VRML and uploaded to Sketchfab. Continue reading

A Heritage Assessment Toolkit

The latest development project for Archaeogeomancy is a GIS toolkit to support the work of a heritage consultancy team. The toolkit needed to be extensible so as to be able to add new tools as required and easy to deploy across an organisation with multiple users at multiple sites with full version control. It also needed to make complex analytical workflows accessible to users who may not necessarily be expert GIS users.

Output from the Heritage Toolkit; visual and spatial analysis

Output from the Heritage Toolkit; visual and spatial analysis using the OS Terrain 50 Digital Terrain Model

A toolkit

The optimal solution for these requirements: a toolkit implemented as an Add-In for ArcGIS. This solution leveraged the Add-In framework for the existing corporate GIS platform to provide a simple means of installing a toolbar to access a set of bespoke tools.These tools automated data management workflows and standardised analysis with a limited range of options from predefined specifications.

In addition to the spatial analysis tools, a range of tools to assist with gazetteer compilation from the usual range of statutory and non-statutory sources (eg Historic Environment Records, National Heritage Lists, etc) was implemented. These tools use source data to create a standardised gazetteer of Heritage Assets including metadata about sources used. An additional proximity output shows distances between Heritage Assets and the Development Site(s).

The Heritage Assessment Tools Toolbar

The Heritage Assessment Tools Toolbar

The toolkit was implemented using ArcGIS 10.2 as a Python Add-In; the use of an Add-In helps with deployment, version control and updates. The toolkit also makes use of the 3D Analyst extension to provide the core visibility functions. The standard ArcGIS Toolbox help system was used to provide context sensitive help for each tool and any parameters and a full html user guide was incorporated into the Add-In using standard Python webbrowser functionality.
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Maplets – static images of maps for use in applications

Toolbox by Florian Richter

Toolbox by Florian Richter

For a while now, I’ve been using the Data Driven Pages functionality of ArcGIS to output static maps, indexed by feature, to include in database driven applications such as MS Access and/or dynamic websites including Content Management Systems. This is a neat way of providing contextual location information on forms and reports in Access or on webpages without having to deploy GIS.

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Digital Heritage Services – progress

16mm Newsarchive by DRs Kulturarvsprojekt

16mm Newsarchive by DRs Kulturarvsprojekt

Archaeogeomancy are pleased to be entering the third month of offering a range of digital heritage and geomatics services.

Focussing on consultancy and building on over a decade of experience and expertise, services now available are aimed at highly specialist digital heritage and archaeological geomatics requirements, skills which even the largest and best resourced of heritage and environmental service providers may not retain in house. Continue reading

Geosemantics; the story so far

Semantic Web Rubik's Cube by dullhunk

Semantic Web Rubik’s Cube by dullhunk

Into the second month of the PhD now and things are starting to coalesce and take shape. A framework for development, testing and deployment of proposed demonstrators is emerging and I’m making good headway demystifying the world of geosemantics (at least, it’s becoming clearer in my head!).

So, as well as continuing with the literature review, I’m knitting together a whole bunch of tools:

  • Java Development Kit (JDK) – the programming language at the heart of it all
  • Maven – a project management and comprehension tool
  • Eclipse – open development platform
  • Jena – a Java framework for building Semantic Web applications
  • Oracle 11g – relational Database Management System (RDBMS) with Spatial and Semantic components
  • D2RQ – a system for accessing relational databases as virtual, read-only RDF graphs.
  • AllegroGraph – a graph database
  • Prolog – logic programming
  • Protégé – ontology editor and knowledge-base framework
  • GeoSPARQL – query language for geospatial data stored as RDF
  • ArcGIS – Geographic Information System for data preparation, processing, etc
  • GeoServer – open source GIS server written in Java that allows users to share and edit geospatial data.

I’ll be posting more along the journey. Next steps will be to complete the literature review, submit stage reports and use some real archaeological data. Exciting stuff!

GIS software for the Digital Humanities: A free two-day workshop

Spatial Humanities at Lancaster

Spatial Humanities at Lancaster

Following on from their previous event, the good folks at Lancaster University are running another seminar in April.

Such opportunities are few and far between and GIS training can be costly so I would thoroughly recommend taking advantage of this if at all possible. Continue reading