Hi,
The axial lines are first broken up into segments where any two lines intersect. Then the angular measures are calculated for the segment map. Clearly, going straight ahead from segment to segment down an axial line involves no change of direction (angle deviation is zero), but when you move from one axial line to another a change of direction is involved.
Alan
Sent from my iPad
On 10 May 2013, at 15:29, "Xiaolin Xia" <[log in to unmask]> wrote:
> Hello to all,
>
> I am a GIS student and doing my thesis about angular segment analysis recently. There is one question that confuses me. I will be very appreciated if someone can clear it out for me. In Turner 's paper (2007), "from axial to road-centre lines: a new representation for space syntax and a new model of route choice for transport network analysis", he mentioned that angular segment analysis can marry axial representations, and angular measures in his results are for axial lines. As far as i know, in Depthmap, angular segment analysis breaks axial lines into segments and calculate measures for segment units, not for axial lines. So my confusion is that how Turner in that paper got angular measures for axial lines. Did he summarized the angular measures of segments to axial lines or he used another way to directly run angular analysis on axial lines ?
>
>
> Best regards,
> Xiaolin
>
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