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

Kampung Bendungan Hilir · Jakarta Pusat · Kampung kota

r = 800 m · 36 bin · Footway coverage 18.9% · moderate

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Kampung Bendungan Hilir

Jakarta Pusat · Kampung kota

A kampung wedged between the Sudirman towers, threaded with narrow gang.

Drive

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° · 6.1%Drive · 5°–15° · 1.0%Drive · 15°–25° · 1.2%Drive · 25°–35° · 0.7%Drive · 35°–45° · 1.3%Drive · 45°–55° · 5.3%Drive · 55°–65° · 1.3%Drive · 65°–75° · 2.3%Drive · 75°–85° · 3.4%Drive · 85°–95° · 6.4%Drive · 95°–105° · 0.7%Drive · 105°–115° · 0.8%Drive · 115°–125° · 1.1%Drive · 125°–135° · 1.5%Drive · 135°–145° · 4.4%Drive · 145°–155° · 5.7%Drive · 155°–165° · 2.2%Drive · 165°–175° · 4.5%Drive · 175°–185° · 6.1%Drive · 185°–195° · 1.0%Drive · 195°–205° · 1.2%Drive · 205°–215° · 0.7%Drive · 215°–225° · 1.3%Drive · 225°–235° · 5.3%Drive · 235°–245° · 1.3%Drive · 245°–255° · 2.3%Drive · 255°–265° · 3.4%Drive · 265°–275° · 6.4%Drive · 275°–285° · 0.7%Drive · 285°–295° · 0.8%Drive · 295°–305° · 1.1%Drive · 305°–315° · 1.5%Drive · 315°–325° · 4.4%Drive · 325°–335° · 5.7%Drive · 335°–345° · 2.2%Drive · 345°–355° · 4.5%
Drive H 3.329 · φ 0.22
Orientation entropy
3.329nat
H / H max
0.929
φ orientation-order
0.218
Circuity
2.122~441
Average node degree
2.31
Four-way
2.2%
Dead-end
18.9%
Intersection density
214 /km²
Median segment length
35 m
Network length
54.2 km

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. 441 pairs sampled · 49 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.

Where these come from

Nodes
901
Edges
1041
Intersections (degree ≥ 3)
430
Disc area
2.01 km²
Intersection density
214 /km²
Rose weighted length
108.4 km
Per-edge circuity
1.051

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.

Walk

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° · 6.4%Walk · 5°–15° · 1.2%Walk · 15°–25° · 1.9%Walk · 25°–35° · 1.1%Walk · 35°–45° · 1.6%Walk · 45°–55° · 6.9%Walk · 55°–65° · 1.2%Walk · 65°–75° · 2.2%Walk · 75°–85° · 3.5%Walk · 85°–95° · 7.0%Walk · 95°–105° · 0.9%Walk · 105°–115° · 1.1%Walk · 115°–125° · 1.1%Walk · 125°–135° · 1.2%Walk · 135°–145° · 3.9%Walk · 145°–155° · 3.7%Walk · 155°–165° · 1.9%Walk · 165°–175° · 3.1%Walk · 175°–185° · 6.4%Walk · 185°–195° · 1.2%Walk · 195°–205° · 1.9%Walk · 205°–215° · 1.1%Walk · 215°–225° · 1.6%Walk · 225°–235° · 6.9%Walk · 235°–245° · 1.2%Walk · 245°–255° · 2.2%Walk · 255°–265° · 3.5%Walk · 265°–275° · 7.0%Walk · 275°–285° · 0.9%Walk · 285°–295° · 1.1%Walk · 295°–305° · 1.1%Walk · 305°–315° · 1.2%Walk · 315°–325° · 3.9%Walk · 325°–335° · 3.7%Walk · 335°–345° · 1.9%Walk · 345°–355° · 3.1%
Walk H 3.345 · φ 0.21
Orientation entropy
3.345nat
H / H max
0.933
φ orientation-order
0.206
Circuity
1.742~448
Average node degree
2.39
Four-way
5.9%
Dead-end
18.3%
Intersection density
308 /km²
Median segment length
29 m
Network length
63.6 km

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. 448 pairs sampled · 41 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.

Where these come from

Nodes
1197
Edges
1433
Intersections (degree ≥ 3)
620
Disc area
2.01 km²
Intersection density
308 /km²
Rose weighted length
127.1 km
Per-edge circuity
1.080

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.

Both roses overlaid

NWalk · 355°–5° · 6.4%Walk · 5°–15° · 1.2%Walk · 15°–25° · 1.9%Walk · 25°–35° · 1.1%Walk · 35°–45° · 1.6%Walk · 45°–55° · 6.9%Walk · 55°–65° · 1.2%Walk · 65°–75° · 2.2%Walk · 75°–85° · 3.5%Walk · 85°–95° · 7.0%Walk · 95°–105° · 0.9%Walk · 105°–115° · 1.1%Walk · 115°–125° · 1.1%Walk · 125°–135° · 1.2%Walk · 135°–145° · 3.9%Walk · 145°–155° · 3.7%Walk · 155°–165° · 1.9%Walk · 165°–175° · 3.1%Walk · 175°–185° · 6.4%Walk · 185°–195° · 1.2%Walk · 195°–205° · 1.9%Walk · 205°–215° · 1.1%Walk · 215°–225° · 1.6%Walk · 225°–235° · 6.9%Walk · 235°–245° · 1.2%Walk · 245°–255° · 2.2%Walk · 255°–265° · 3.5%Walk · 265°–275° · 7.0%Walk · 275°–285° · 0.9%Walk · 285°–295° · 1.1%Walk · 295°–305° · 1.1%Walk · 305°–315° · 1.2%Walk · 315°–325° · 3.9%Walk · 325°–335° · 3.7%Walk · 335°–345° · 1.9%Walk · 345°–355° · 3.1%Drive · 355°–5° · 6.1%Drive · 5°–15° · 1.0%Drive · 15°–25° · 1.2%Drive · 25°–35° · 0.7%Drive · 35°–45° · 1.3%Drive · 45°–55° · 5.3%Drive · 55°–65° · 1.3%Drive · 65°–75° · 2.3%Drive · 75°–85° · 3.4%Drive · 85°–95° · 6.4%Drive · 95°–105° · 0.7%Drive · 105°–115° · 0.8%Drive · 115°–125° · 1.1%Drive · 125°–135° · 1.5%Drive · 135°–145° · 4.4%Drive · 145°–155° · 5.7%Drive · 155°–165° · 2.2%Drive · 165°–175° · 4.5%Drive · 175°–185° · 6.1%Drive · 185°–195° · 1.0%Drive · 195°–205° · 1.2%Drive · 205°–215° · 0.7%Drive · 215°–225° · 1.3%Drive · 225°–235° · 5.3%Drive · 235°–245° · 1.3%Drive · 245°–255° · 2.3%Drive · 255°–265° · 3.4%Drive · 265°–275° · 6.4%Drive · 275°–285° · 0.7%Drive · 285°–295° · 0.8%Drive · 295°–305° · 1.1%Drive · 305°–315° · 1.5%Drive · 315°–325° · 4.4%Drive · 325°–335° · 5.7%Drive · 335°–345° · 2.2%Drive · 345°–355° · 4.5%
Drive H 3.329 · φ 0.22Walk H 3.345 · φ 0.21
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
  • Drive
  • Walk
  • Both

DeltaWalk − Drive

Orientation entropy
+0.016
H / H max
+0.004
φ orientation-order
−0.013
Circuity
−0.380
Average node degree
+0.08
Four-way
+3.7%
Dead-end
−0.6%
Intersection density
+94
Median segment length
−6
Network length
+9.3

What walking adds

Walk-only length
16.6 km
Share of walking network
26.2%
Fig. 3 · r = 800 m — 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.
Rose as a table — 36 bins — Kampung Bendungan Hilir
Share of network length per 10° bearing bin, for drive and walk.
BinBearing rangeP — DriveP — Walk−P·ln P−P·ln P
00355°–5°6.10%6.40%0.17070.1760
015°–15°1.02%1.21%0.04670.0536
0215°–25°1.22%1.89%0.05370.0751
0325°–35°0.73%1.08%0.03590.0489
0435°–45°1.29%1.65%0.05630.0676
0545°–55°5.27%6.94%0.15510.1852
0655°–65°1.34%1.25%0.05780.0547
0765°–75°2.32%2.15%0.08720.0827
0875°–85°3.39%3.50%0.11470.1172
0985°–95°6.40%7.03%0.17600.1867
1095°–105°0.69%0.85%0.03420.0407
11105°–115°0.82%1.08%0.03930.0488
12115°–125°1.07%1.07%0.04850.0487
13125°–135°1.52%1.18%0.06360.0525
14135°–145°4.36%3.91%0.13670.1268
15145°–155°5.75%3.74%0.16420.1228
16155°–165°2.23%1.91%0.08490.0757
17165°–175°4.48%3.14%0.13910.1086
18175°–185°6.10%6.40%0.17070.1760
19185°–195°1.02%1.21%0.04670.0536
20195°–205°1.22%1.89%0.05370.0751
21205°–215°0.73%1.08%0.03590.0489
22215°–225°1.29%1.65%0.05630.0676
23225°–235°5.27%6.94%0.15510.1852
24235°–245°1.34%1.25%0.05780.0547
25245°–255°2.32%2.15%0.08720.0827
26255°–265°3.39%3.50%0.11470.1172
27265°–275°6.40%7.03%0.17600.1867
28275°–285°0.69%0.85%0.03420.0407
29285°–295°0.82%1.08%0.03930.0488
30295°–305°1.07%1.07%0.04850.0487
31305°–315°1.52%1.18%0.06360.0525
32315°–325°4.36%3.91%0.13670.1268
33325°–335°5.75%3.74%0.16420.1228
34335°–345°2.23%1.91%0.08490.0757
35345°–355°4.48%3.14%0.13910.1086
Sum = H3.3293.345

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.