Realising the value of Spatial Analysis
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description
At Esri UK Annual Conference 2014 Spatial Analysis helps solve problems and answer questions about the world around us, from finding spatial patterns, to detecting change, to making sense of complex road networks. The possibilities are endless. This session will introduce a number of key techniques to help analyse your geographic data; we will then look at the best way of sharing your results with colleagues or the public through the use of ArcGIS Online Story Maps.
Transcript of Realising the value of Spatial Analysis
This document may not, without permission be disclosed to any third party. © Esri UK 2014
This document may not, without permission be disclosed to any third party. © Esri UK 2014
Realising the Value of Spatial Analysis
Alice Duff & Claire Inkpen
@aliceduff
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
Agenda
• What is the value of Spatial Analysis?
• Scenario
• Data
• Tools
• Automating workflows with ModelBuilder
• Sharing our results; Story Maps
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
What is Spatial Analysis?
• Relationship between sets of spatial features
– Point in Polygon Analysis
– Proximity Analysis
– Interpolation
– Site Selection
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
Where is the best place to build a new property development?
? !
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
Spatial Analyst Tools
• Inverse Distance Weighting (IDW)
– Interpolation technique
– Input point data
– Create continuous surface
– Turn Broadband Postcode data into a continuous surface
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
Spatial Analyst Tools
• Euclidean Distance
– Distance from every cell to feature
– As the crow flies
– Create continuous surface
– Run for all datasets where proximity is desirable
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
Spatial Analyst Tools
• Reclassify
– Changes the values in a raster– Used for grouping values– Replacing values based on new information– Reclassifying values of a set of rasters to a common units
– Run for all surfaces
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
Spatial Analyst Tools
• Weighted Overlay
– Overlays several rasters
– Can weight according to importance
– The final stage of analysis
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Demo
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Automating our Workflows
• ModelBuilder
– Document decisions
– Build re-usable workflows
– Export as python script
– Embed custom tools
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Demo
This document may not, without permission be disclosed to any third party. © Esri UK 2014This document may not, without permission be disclosed to any third party. © Esri UK 2014
Sharing
• Communicate results to non-
technical audiences
• ArcGIS Online
• Story Maps
• Accessible anywhere
This document may not, without permission be disclosed to any third party. © Esri UK 2014
Demo
This document may not, without permission be disclosed to any third party. © Esri UK 2014
