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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.

Kampung Braga · Bandung · Kampung kota

r = 800 m · 36 bin · Footway coverage 35.4% · good

Kampung Braga

Bandung · Kampung kota

A kampung on the Cikapundung, directly behind Jalan Braga. Its gang are densely mapped — one of the few sites here whose drive/walk gap can actually be read.

Drive

35.8 km · 180 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° · 8.3%Drive · 5°–15° · 8.8%Drive · 15°–25° · 1.7%Drive · 25°–35° · 1.0%Drive · 35°–45° · 0.3%Drive · 45°–55° · 0.5%Drive · 55°–65° · 0.8%Drive · 65°–75° · 1.0%Drive · 75°–85° · 1.4%Drive · 85°–95° · 4.4%Drive · 95°–105° · 12.2%Drive · 105°–115° · 2.1%Drive · 115°–125° · 2.2%Drive · 125°–135° · 0.4%Drive · 135°–145° · 0.5%Drive · 145°–155° · 1.1%Drive · 155°–165° · 1.8%Drive · 165°–175° · 1.4%Drive · 175°–185° · 8.3%Drive · 185°–195° · 8.8%Drive · 195°–205° · 1.7%Drive · 205°–215° · 1.0%Drive · 215°–225° · 0.3%Drive · 225°–235° · 0.5%Drive · 235°–245° · 0.8%Drive · 245°–255° · 1.0%Drive · 255°–265° · 1.4%Drive · 265°–275° · 4.4%Drive · 275°–285° · 12.2%Drive · 285°–295° · 2.1%Drive · 295°–305° · 2.2%Drive · 305°–315° · 0.4%Drive · 315°–325° · 0.5%Drive · 325°–335° · 1.1%Drive · 335°–345° · 1.8%Drive · 345°–355° · 1.4%
Drive H 3.035 · φ 0.44

Walk

58.4 km · 394 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° · 8.9%Walk · 5°–15° · 8.5%Walk · 15°–25° · 1.4%Walk · 25°–35° · 0.8%Walk · 35°–45° · 0.4%Walk · 45°–55° · 0.5%Walk · 55°–65° · 0.8%Walk · 65°–75° · 0.9%Walk · 75°–85° · 1.8%Walk · 85°–95° · 4.3%Walk · 95°–105° · 12.5%Walk · 105°–115° · 1.8%Walk · 115°–125° · 1.9%Walk · 125°–135° · 0.4%Walk · 135°–145° · 0.5%Walk · 145°–155° · 0.8%Walk · 155°–165° · 2.0%Walk · 165°–175° · 1.7%Walk · 175°–185° · 8.9%Walk · 185°–195° · 8.5%Walk · 195°–205° · 1.4%Walk · 205°–215° · 0.8%Walk · 215°–225° · 0.4%Walk · 225°–235° · 0.5%Walk · 235°–245° · 0.8%Walk · 245°–255° · 0.9%Walk · 255°–265° · 1.8%Walk · 265°–275° · 4.3%Walk · 275°–285° · 12.5%Walk · 285°–295° · 1.8%Walk · 295°–305° · 1.9%Walk · 305°–315° · 0.4%Walk · 315°–325° · 0.5%Walk · 325°–335° · 0.8%Walk · 335°–345° · 2.0%Walk · 345°–355° · 1.7%
Walk H 3.009 · φ 0.45

Delta

+22.7

km of network reachable only on foot · 38.8% of the walking network

+214
intersections per km²
−6.5%
Dead-end
−0.026
ΔH · orientation entropy

Both roses overlaid

NWalk · 355°–5° · 8.9%Walk · 5°–15° · 8.5%Walk · 15°–25° · 1.4%Walk · 25°–35° · 0.8%Walk · 35°–45° · 0.4%Walk · 45°–55° · 0.5%Walk · 55°–65° · 0.8%Walk · 65°–75° · 0.9%Walk · 75°–85° · 1.8%Walk · 85°–95° · 4.3%Walk · 95°–105° · 12.5%Walk · 105°–115° · 1.8%Walk · 115°–125° · 1.9%Walk · 125°–135° · 0.4%Walk · 135°–145° · 0.5%Walk · 145°–155° · 0.8%Walk · 155°–165° · 2.0%Walk · 165°–175° · 1.7%Walk · 175°–185° · 8.9%Walk · 185°–195° · 8.5%Walk · 195°–205° · 1.4%Walk · 205°–215° · 0.8%Walk · 215°–225° · 0.4%Walk · 225°–235° · 0.5%Walk · 235°–245° · 0.8%Walk · 245°–255° · 0.9%Walk · 255°–265° · 1.8%Walk · 265°–275° · 4.3%Walk · 275°–285° · 12.5%Walk · 285°–295° · 1.8%Walk · 295°–305° · 1.9%Walk · 305°–315° · 0.4%Walk · 315°–325° · 0.5%Walk · 325°–335° · 0.8%Walk · 335°–345° · 2.0%Walk · 345°–355° · 1.7%Drive · 355°–5° · 8.3%Drive · 5°–15° · 8.8%Drive · 15°–25° · 1.7%Drive · 25°–35° · 1.0%Drive · 35°–45° · 0.3%Drive · 45°–55° · 0.5%Drive · 55°–65° · 0.8%Drive · 65°–75° · 1.0%Drive · 75°–85° · 1.4%Drive · 85°–95° · 4.4%Drive · 95°–105° · 12.2%Drive · 105°–115° · 2.1%Drive · 115°–125° · 2.2%Drive · 125°–135° · 0.4%Drive · 135°–145° · 0.5%Drive · 145°–155° · 1.1%Drive · 155°–165° · 1.8%Drive · 165°–175° · 1.4%Drive · 175°–185° · 8.3%Drive · 185°–195° · 8.8%Drive · 195°–205° · 1.7%Drive · 205°–215° · 1.0%Drive · 215°–225° · 0.3%Drive · 225°–235° · 0.5%Drive · 235°–245° · 0.8%Drive · 245°–255° · 1.0%Drive · 255°–265° · 1.4%Drive · 265°–275° · 4.4%Drive · 275°–285° · 12.2%Drive · 285°–295° · 2.1%Drive · 295°–305° · 2.2%Drive · 305°–315° · 0.4%Drive · 315°–325° · 0.5%Drive · 325°–335° · 1.1%Drive · 335°–345° · 1.8%Drive · 345°–355° · 1.4%
Drive H 3.035 · φ 0.44Walk H 3.009 · φ 0.45
  • 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.

Kampung Braga: driving and walking network metrics, their difference, and their position among 33 sites.
MetricDriveWalkDeltaPosition among 33 sites
Orientation entropynat3.0353.009−0.026Drive: position 12 of 33; Walk: position 10 of 33, when the set is sorted by this metric, smallest first.
H / H max0.8470.840−0.007Drive: position 12 of 33; Walk: position 10 of 33, when the set is sorted by this metric, smallest first.
φ orientation-order0.4370.454+0.017Drive: position 22 of 33; Walk: position 24 of 33, when the set is sorted by this metric, smallest first.
Circuitysampled1.3941.340−0.054Drive: position 5 of 33; Walk: position 2 of 33, when the set is sorted by this metric, smallest first.
Average node degree2.342.66+0.32Drive: position 19 of 33; Walk: position 32 of 33, when the set is sorted by this metric, smallest first.
Four-way5.3%19.9%+14.6%Drive: position 17 of 33; Walk: position 32 of 33, when the set is sorted by this metric, smallest first.
Dead-end26.1%19.6%−6.5%Drive: position 10 of 33; Walk: position 5 of 33, when the set is sorted by this metric, smallest first.
Intersection density180 /km²394 /km²+214 /km²Drive: position 21 of 33; Walk: position 30 of 33, when the set is sorted by this metric, smallest first.
Median segment length33 m20 m−13 mDrive: position 9 of 33; Walk: position 3 of 33, when the set is sorted by this metric, smallest first.
Network length35.8 km58.4 km+22.6 kmDrive: position 19 of 33; Walk: position 28 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: 458 pairs sampled · 37 pairs unreachable.Walk: 467 pairs sampled · 22 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
22.7 km
Share of walking network
38.8%

Where these numbers come from

Drive

Nodes
658
Edges
770
Intersections (degree ≥ 3)
361
Disc area
2.01 km²
Intersection density
180 /km²
Rose weighted length
71.6 km
Per-edge circuity
1.051

Walk

Nodes
1214
Edges
1614
Intersections (degree ≥ 3)
792
Disc area
2.01 km²
Intersection density
394 /km²
Rose weighted length
116.8 km
Per-edge circuity
1.044

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 — Kampung Braga
Share of network length per 10° bearing bin, for drive and walk.
BinBearing rangeP — DriveP — Walk−P·ln P−P·ln P
00355°–5°8.35%8.94%0.20730.2159
015°–15°8.82%8.54%0.21420.2101
0215°–25°1.67%1.43%0.06840.0607
0325°–35°1.00%0.79%0.04620.0383
0435°–45°0.34%0.41%0.01950.0224
0545°–55°0.50%0.49%0.02630.0261
0655°–65°0.83%0.81%0.03960.0392
0765°–75°1.00%0.93%0.04600.0433
0875°–85°1.41%1.79%0.06000.0720
0985°–95°4.36%4.27%0.13650.1347
1095°–105°12.21%12.51%0.25670.2600
11105°–115°2.07%1.79%0.08020.0721
12115°–125°2.16%1.93%0.08280.0761
13125°–135°0.42%0.39%0.02280.0216
14135°–145°0.53%0.48%0.02760.0257
15145°–155°1.13%0.84%0.05070.0400
16155°–165°1.83%1.98%0.07320.0776
17165°–175°1.39%1.69%0.05950.0689
18175°–185°8.35%8.94%0.20730.2159
19185°–195°8.82%8.54%0.21420.2101
20195°–205°1.67%1.43%0.06840.0607
21205°–215°1.00%0.79%0.04620.0383
22215°–225°0.34%0.41%0.01950.0224
23225°–235°0.50%0.49%0.02630.0261
24235°–245°0.83%0.81%0.03960.0392
25245°–255°1.00%0.93%0.04600.0433
26255°–265°1.41%1.79%0.06000.0720
27265°–275°4.36%4.27%0.13650.1347
28275°–285°12.21%12.51%0.25670.2600
29285°–295°2.07%1.79%0.08020.0721
30295°–305°2.16%1.93%0.08280.0761
31305°–315°0.42%0.39%0.02280.0216
32315°–325°0.53%0.48%0.02760.0257
33325°–335°1.13%0.84%0.05070.0400
34335°–345°1.83%1.98%0.07320.0776
35345°–355°1.39%1.69%0.05950.0689
Sum = H3.0353.009

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.