The axial map is used in space syntax analysis to represent and analyse all open public space as a continuous spatial network in order to measure how well connected each street space is to its surroundings. This is done by taking an accurate plan of a built up area and drawing the set of fewest and longest lines that cover all the open space ensuring that lines intersect where adjacent spaces are contiguous. Space syntax analysis computes all the lines in the network according to their relative depth from each other. Depth increases with the number of changes of direction between lines, see Hillier, B. (2007). Each segment map is coloured using a continuous colour scale from blue to red to represent low to high values of the measure.

Segment analysis takes each axial line and breaks it into segments at the intersections between axial lines. Segment analysis is concerned with the angular properties of graphs by calculating the relative straightness (least angular deviation or 'angular depth') of each segment from all other segments in the system. Choice is calculated by counting the number of times each segment falls on the shortest path between all pairs of segments within a selected distance-radius where 'shortest path' refers to the path of least angular deviation or straightest route through the system.

• Red lines (high values) indicate greatest potential through movement.
• Blue lines (low values) indicate lowest potential through movement.

Segments

The maps are sections extracted from the segment map of the Greater London area bounded by the M25.

Segment analysis is concerned with the angular properties of graphs. This involves calculating the relative straightness (least angular deviation or 'angular depth') of each segment from all other segments in the system. Using this angular metric, lines that are be relatively deep from each other are said to be 'segregated', lines that are be relatively shallow are said to be 'integrated'. See Hillier. and Iida, (2005)

• Red lines (high values) indicate relatively shallow lines which are integrated.
• Blue lines (low values) indicate relatively deep lines which are segregated.

Segments

The maps are sections extracted from the segment map of the Greater London area bounded by the M25.

This is a combined measure that created using Global Choice and Global Angular integration.

• Red Lines (high values ) indicate relatively high potential for to and through movement.
• Blue Lines (low values ) indicate relatively low potential for to and through movement.

Segments

The maps are sections extracted from the segment map of the Greater London area bounded by the M25.

The axial map is used in space syntax analysis to represent and analyse all open public space as a continuous spatial network in order to measure how well connected each street space is to its surroundings. This is done by taking an accurate plan of a built up area and drawing the set of fewest and longest lines that cover all the open space ensuring that lines intersect where adjacent spaces are contiguous.

Space syntax analysis computes all the lines in the network according to their relative depth from each other. Depth increases with the number of changes of direction between lines. The terminology used to describe the shallowness or depth of a space in relation to other spaces refers to spatial integration or segregation. The resulting numbers form the basis for coloured-up visualisations which represent the distribution of spatial accessibility. The scale is coloured from red for the most accessible (integrated) lines, through the colour spectrum to blue for the least accessible (segregated) lines. See Hillier, B. (2007) Space is the machine: a configurational theory of architecture. Space Syntax, London, UK. ISBN 9780955622403

Axial lines

The maps are sections extracted from the segment map of the Greater London area bounded by the M25.