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3. Myriad
4. Myriad II Spatial Analysis Module

Myriad II Spatial Analysis Module

Purpose of Spatial Analysis

• Spatial Analysis gives an overview of how people move in a complex environment.
• It gives us a lot of information quickly, without the need for lengthy simulations.
• It can show areas of congestion, shortcuts, distance to nearest exit, compliance with building regulations.
• This can be done for all possible points in a certain geometry, giving an insight into how people move within the geometry.

Model Set Up

• A CAD plan of an office is converted into a bitmap, where black represents space where people can move.
• In this case, exit points are the stairs and lifts to a lower floor.
• The aim is to test an evacuation of the building.

Preliminary Model Run

• A Cellular Automata process is applied to give a ‘Spatial Analysis’ map or diffusion map.
• This shows us points closer to an exit in red (space used more) and points further away from the exits in blue (less used space).

Model Contours

• We can separate out colours and show contours, much like isotours on a a map of hills.
• These can tell us where crowds could build up quickly.

Model Distance from the Exits

• We can choose a range of distance to display in a certain colour.
• Here we have chosen three colours, red, green and blue as an example.
• This can check building evacuation regulations.

Model Areas of Congestion

• We let the model choose a random 500 points and each point then displays a trail to the nearest exit.
• We then do this for:
  • 1000 points
  • 5000 points
• We can see how people will move through the space during the evacuation

Model Individual Distances

• We can determine the individual distances to exit points from any point
• The circle shows the minimum width on route
• We confirm the suspected shortcut seen as a potential danger during evacuation

Applications for Spatial Analysis

• Checking buildings adhere to evacuation guidelines
• Find likely movements of people through a complex space
• Find areas of potential congestion
• Find Probability of Conflict i.e. areas where people are likely to be trying to occupy the same space
• Test, retest an optimise designs based on different criteria
• Identify unobvious shortcuts for movement