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Bentuk Kota
Tag mapping DefaultBahasa Indonesia

Indonesian street network morphology — the driving network and the walking network, measured separately for the same place.

Pasar Atas · Bukittinggi · Small town

r = 800 m · 36 bin · Footway coverage 21.2% · moderate

Pasar Atas

Bukittinggi · Small town

A Minangkabau highland market town cut by a ravine: part of its walking network is public stairs rather than level gang.

Drive

26.8 km · 96 intersections/km²

Fig. 1 · r = 800 m — The drivable network inside the sampling disc. Uniform ink, no road-class hierarchy, no basemap: the shape is the subject.
NDrive · 355°–5° · 4.3%Drive · 5°–15° · 3.6%Drive · 15°–25° · 3.9%Drive · 25°–35° · 1.4%Drive · 35°–45° · 1.0%Drive · 45°–55° · 1.7%Drive · 55°–65° · 3.5%Drive · 65°–75° · 3.0%Drive · 75°–85° · 3.3%Drive · 85°–95° · 3.7%Drive · 95°–105° · 3.2%Drive · 105°–115° · 3.0%Drive · 115°–125° · 1.2%Drive · 125°–135° · 0.9%Drive · 135°–145° · 1.2%Drive · 145°–155° · 2.0%Drive · 155°–165° · 4.0%Drive · 165°–175° · 5.0%Drive · 175°–185° · 4.3%Drive · 185°–195° · 3.6%Drive · 195°–205° · 3.9%Drive · 205°–215° · 1.4%Drive · 215°–225° · 1.0%Drive · 225°–235° · 1.7%Drive · 235°–245° · 3.5%Drive · 245°–255° · 3.0%Drive · 255°–265° · 3.3%Drive · 265°–275° · 3.7%Drive · 275°–285° · 3.2%Drive · 285°–295° · 3.0%Drive · 295°–305° · 1.2%Drive · 305°–315° · 0.9%Drive · 315°–325° · 1.2%Drive · 325°–335° · 2.0%Drive · 335°–345° · 4.0%Drive · 345°–355° · 5.0%
Drive H 3.473 · φ 0.10

Walk

34.8 km · 149 intersections/km²

Fig. 2 · r = 800 m — The walkable network at the same centre, the same disc, the same extract. Every difference from the drawing beside it is the tag mapping, not a different place.
NWalk · 355°–5° · 4.7%Walk · 5°–15° · 3.7%Walk · 15°–25° · 4.0%Walk · 25°–35° · 1.7%Walk · 35°–45° · 1.0%Walk · 45°–55° · 1.7%Walk · 55°–65° · 3.2%Walk · 65°–75° · 2.9%Walk · 75°–85° · 3.1%Walk · 85°–95° · 4.4%Walk · 95°–105° · 3.3%Walk · 105°–115° · 3.0%Walk · 115°–125° · 1.1%Walk · 125°–135° · 1.0%Walk · 135°–145° · 1.1%Walk · 145°–155° · 1.9%Walk · 155°–165° · 3.6%Walk · 165°–175° · 4.6%Walk · 175°–185° · 4.7%Walk · 185°–195° · 3.7%Walk · 195°–205° · 4.0%Walk · 205°–215° · 1.7%Walk · 215°–225° · 1.0%Walk · 225°–235° · 1.7%Walk · 235°–245° · 3.2%Walk · 245°–255° · 2.9%Walk · 255°–265° · 3.1%Walk · 265°–275° · 4.4%Walk · 275°–285° · 3.3%Walk · 285°–295° · 3.0%Walk · 295°–305° · 1.1%Walk · 305°–315° · 1.0%Walk · 315°–325° · 1.1%Walk · 325°–335° · 1.9%Walk · 335°–345° · 3.6%Walk · 345°–355° · 4.6%
Walk H 3.474 · φ 0.10

Delta

+8.0

km of network reachable only on foot · 23.0% of the walking network

+52
intersections per km²
−9.9%
Dead-end
+0.001
ΔH · orientation entropy

Both roses overlaid

NDrive · 355°–5° · 4.3%Drive · 5°–15° · 3.6%Drive · 15°–25° · 3.9%Drive · 25°–35° · 1.4%Drive · 35°–45° · 1.0%Drive · 45°–55° · 1.7%Drive · 55°–65° · 3.5%Drive · 65°–75° · 3.0%Drive · 75°–85° · 3.3%Drive · 85°–95° · 3.7%Drive · 95°–105° · 3.2%Drive · 105°–115° · 3.0%Drive · 115°–125° · 1.2%Drive · 125°–135° · 0.9%Drive · 135°–145° · 1.2%Drive · 145°–155° · 2.0%Drive · 155°–165° · 4.0%Drive · 165°–175° · 5.0%Drive · 175°–185° · 4.3%Drive · 185°–195° · 3.6%Drive · 195°–205° · 3.9%Drive · 205°–215° · 1.4%Drive · 215°–225° · 1.0%Drive · 225°–235° · 1.7%Drive · 235°–245° · 3.5%Drive · 245°–255° · 3.0%Drive · 255°–265° · 3.3%Drive · 265°–275° · 3.7%Drive · 275°–285° · 3.2%Drive · 285°–295° · 3.0%Drive · 295°–305° · 1.2%Drive · 305°–315° · 0.9%Drive · 315°–325° · 1.2%Drive · 325°–335° · 2.0%Drive · 335°–345° · 4.0%Drive · 345°–355° · 5.0%Walk · 355°–5° · 4.7%Walk · 5°–15° · 3.7%Walk · 15°–25° · 4.0%Walk · 25°–35° · 1.7%Walk · 35°–45° · 1.0%Walk · 45°–55° · 1.7%Walk · 55°–65° · 3.2%Walk · 65°–75° · 2.9%Walk · 75°–85° · 3.1%Walk · 85°–95° · 4.4%Walk · 95°–105° · 3.3%Walk · 105°–115° · 3.0%Walk · 115°–125° · 1.1%Walk · 125°–135° · 1.0%Walk · 135°–145° · 1.1%Walk · 145°–155° · 1.9%Walk · 155°–165° · 3.6%Walk · 165°–175° · 4.6%Walk · 175°–185° · 4.7%Walk · 185°–195° · 3.7%Walk · 195°–205° · 4.0%Walk · 205°–215° · 1.7%Walk · 215°–225° · 1.0%Walk · 225°–235° · 1.7%Walk · 235°–245° · 3.2%Walk · 245°–255° · 2.9%Walk · 255°–265° · 3.1%Walk · 265°–275° · 4.4%Walk · 275°–285° · 3.3%Walk · 285°–295° · 3.0%Walk · 295°–305° · 1.1%Walk · 305°–315° · 1.0%Walk · 315°–325° · 1.1%Walk · 325°–335° · 1.9%Walk · 335°–345° · 3.6%Walk · 345°–355° · 4.6%
Drive H 3.473 · φ 0.10Walk H 3.474 · φ 0.10
  • Drive
  • Walk
  • Both

Two readings, one table

Hairlines: every site in the set, both modes. Marks: this site. A position, not a value — neither end is better.

Pasar Atas: driving and walking network metrics, their difference, and their position among 33 sites.
MetricDriveWalkDeltaPosition among 33 sites
Orientation entropynat3.4733.474+0.001Drive: position 30 of 33; Walk: position 29 of 33, when the set is sorted by this metric, smallest first.
H / H max0.9690.969+0.000Drive: position 30 of 33; Walk: position 29 of 33, when the set is sorted by this metric, smallest first.
φ orientation-order0.0980.097−0.001Drive: position 4 of 33; Walk: position 5 of 33, when the set is sorted by this metric, smallest first.
Circuitysampled1.5421.445−0.097Drive: position 16 of 33; Walk: position 17 of 33, when the set is sorted by this metric, smallest first.
Average node degree2.392.56+0.17Drive: position 24 of 33; Walk: position 28 of 33, when the set is sorted by this metric, smallest first.
Four-way5.6%8.0%+2.5%Drive: position 20 of 33; Walk: position 22 of 33, when the set is sorted by this metric, smallest first.
Dead-end30.6%20.7%−9.9%Drive: position 18 of 33; Walk: position 7 of 33, when the set is sorted by this metric, smallest first.
Intersection density96 /km²149 /km²+52 /km²Drive: position 8 of 33; Walk: position 7 of 33, when the set is sorted by this metric, smallest first.
Median segment length57 m49 m−8 mDrive: position 31 of 33; Walk: position 31 of 33, when the set is sorted by this metric, smallest first.
Network length26.8 km34.8 km+8.0 kmDrive: position 12 of 33; Walk: position 10 of 33, when the set is sorted by this metric, smallest first.

H is in nats — the natural-log unit of information. That is why its maximum is ln 36 ≈ 3.584 rather than log₂ 36.

Circuity is an estimate: network distance over straight-line distance, averaged across a seeded sample of node pairs rather than across all of them. Drive: 428 pairs sampled · 57 pairs unreachable.Walk: 452 pairs sampled · 40 pairs unreachable. Pairs with no route between them at all are excluded from the mean. A large count means this network is fragmented — a signal about the data, not about the place.

Each street segment’s bearing goes into one of 36 bins of 10°, weighted by length: a 500 m road counts ten times a 50 m gang. Bar length is the share of network length running that way, not a count of segments. The rose is always 180°-symmetric, because one segment traversed both ways differs by exactly 180°. Boeing 2019 §3

Fig. 3 · r = 800 m

What walking adds

Ink: the edges that exist only in the walking network. Hairline: the network both modes share. Membership is decided by the tag mapping — an edge counts as walk-only when the OSM way it came from is not admitted to the driving network.
Walk-only length
8.0 km
Share of walking network
23.0%

Where these numbers come from

Drive

Nodes
304
Edges
363
Intersections (degree ≥ 3)
194
Disc area
2.01 km²
Intersection density
96 /km²
Rose weighted length
53.6 km
Per-edge circuity
1.062

Walk

Nodes
435
Edges
557
Intersections (degree ≥ 3)
299
Disc area
2.01 km²
Intersection density
149 /km²
Rose weighted length
69.6 km
Per-edge circuity
1.070

The intermediate values the column above is built from. Intersection density is the intersection count over the disc area; the weighted length is the denominator that turns a rose bar into a share. Two different circuity measures: the per-edge one compares each segment against its own chord, the sampled one compares distances between junctions. The first measures how much streets bend, the second how far out of your way the network takes you.

Rose as a table — 36 bins — Pasar Atas
Share of network length per 10° bearing bin, for drive and walk.
BinBearing rangeP — DriveP — Walk−P·ln P−P·ln P
00355°–5°4.32%4.67%0.13580.1431
015°–15°3.56%3.67%0.11870.1214
0215°–25°3.91%3.97%0.12680.1282
0325°–35°1.44%1.70%0.06100.0693
0435°–45°0.97%1.01%0.04480.0465
0545°–55°1.71%1.75%0.06960.0708
0655°–65°3.46%3.22%0.11650.1107
0765°–75°3.00%2.89%0.10520.1025
0875°–85°3.35%3.15%0.11370.1088
0985°–95°3.70%4.39%0.12200.1372
1095°–105°3.24%3.26%0.11110.1115
11105°–115°2.98%3.03%0.10460.1060
12115°–125°1.22%1.06%0.05360.0483
13125°–135°0.85%0.97%0.04070.0450
14135°–145°1.23%1.15%0.05390.0512
15145°–155°2.02%1.89%0.07890.0750
16155°–165°4.01%3.61%0.12890.1199
17165°–175°5.03%4.61%0.15050.1418
18175°–185°4.32%4.67%0.13580.1431
19185°–195°3.56%3.67%0.11870.1214
20195°–205°3.91%3.97%0.12680.1282
21205°–215°1.44%1.70%0.06100.0693
22215°–225°0.97%1.01%0.04480.0465
23225°–235°1.71%1.75%0.06960.0708
24235°–245°3.46%3.22%0.11650.1107
25245°–255°3.00%2.89%0.10520.1025
26255°–265°3.35%3.15%0.11370.1088
27265°–275°3.70%4.39%0.12200.1372
28275°–285°3.24%3.26%0.11110.1115
29285°–295°2.98%3.03%0.10460.1060
30295°–305°1.22%1.06%0.05360.0483
31305°–315°0.85%0.97%0.04070.0450
32315°–325°1.23%1.15%0.05390.0512
33325°–335°2.02%1.89%0.07890.0750
34335°–345°4.01%3.61%0.12890.1199
35345°–355°5.03%4.61%0.15050.1418
Sum = H3.4733.474

The last column is each bin’s term in H = −Σ P(i)·ln P(i). Add the thirty-six of them and you get the H printed under the rose. An empty bin contributes zero.

Download this site’s data (JSON, ODbL)

Data jalan © OpenStreetMap contributors, ODbL 1.0. Basis data turunan ini ditawarkan dengan lisensi yang sama. · Boeing, G. 2019. Urban Spatial Order: Street Network Orientation, Configuration, and Entropy. Applied Network Science 4(1):67.