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
- Orientation entropy
- 3.473nat
- H / H max
- 0.969
- φ orientation-order
- 0.098
- Circuity
- 1.542~428
- Average node degree
- 2.39
- Four-way
- 5.6%
- Dead-end
- 30.6%
- Intersection density
- 96 /km²
- Median segment length
- 57 m
- Network length
- 26.8 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. 428 pairs sampled · 57 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
- 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
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
- Orientation entropy
- 3.474nat
- H / H max
- 0.969
- φ orientation-order
- 0.097
- Circuity
- 1.445~452
- Average node degree
- 2.56
- Four-way
- 8.0%
- Dead-end
- 20.7%
- Intersection density
- 149 /km²
- Median segment length
- 49 m
- Network length
- 34.8 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. 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.
Where these come from
- 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.
Both roses overlaid
- Drive
- Walk
- Both
DeltaWalk − Drive
- Orientation entropy
- +0.001
- H / H max
- +0.000
- φ orientation-order
- −0.001
- Circuity
- −0.097
- Average node degree
- +0.17
- Four-way
- +2.5%
- Dead-end
- −9.9%
- Intersection density
- +52
- Median segment length
- −8
- Network length
- +8.0
What walking adds
- Walk-only length
- 8.0 km
- Share of walking network
- 23.0%
Rose as a table — 36 bins — Pasar Atas
| Bin | Bearing range | P — Drive | P — Walk | −P·ln P | −P·ln P |
|---|---|---|---|---|---|
| 00 | 355°–5° | 4.32% | 4.67% | 0.1358 | 0.1431 |
| 01 | 5°–15° | 3.56% | 3.67% | 0.1187 | 0.1214 |
| 02 | 15°–25° | 3.91% | 3.97% | 0.1268 | 0.1282 |
| 03 | 25°–35° | 1.44% | 1.70% | 0.0610 | 0.0693 |
| 04 | 35°–45° | 0.97% | 1.01% | 0.0448 | 0.0465 |
| 05 | 45°–55° | 1.71% | 1.75% | 0.0696 | 0.0708 |
| 06 | 55°–65° | 3.46% | 3.22% | 0.1165 | 0.1107 |
| 07 | 65°–75° | 3.00% | 2.89% | 0.1052 | 0.1025 |
| 08 | 75°–85° | 3.35% | 3.15% | 0.1137 | 0.1088 |
| 09 | 85°–95° | 3.70% | 4.39% | 0.1220 | 0.1372 |
| 10 | 95°–105° | 3.24% | 3.26% | 0.1111 | 0.1115 |
| 11 | 105°–115° | 2.98% | 3.03% | 0.1046 | 0.1060 |
| 12 | 115°–125° | 1.22% | 1.06% | 0.0536 | 0.0483 |
| 13 | 125°–135° | 0.85% | 0.97% | 0.0407 | 0.0450 |
| 14 | 135°–145° | 1.23% | 1.15% | 0.0539 | 0.0512 |
| 15 | 145°–155° | 2.02% | 1.89% | 0.0789 | 0.0750 |
| 16 | 155°–165° | 4.01% | 3.61% | 0.1289 | 0.1199 |
| 17 | 165°–175° | 5.03% | 4.61% | 0.1505 | 0.1418 |
| 18 | 175°–185° | 4.32% | 4.67% | 0.1358 | 0.1431 |
| 19 | 185°–195° | 3.56% | 3.67% | 0.1187 | 0.1214 |
| 20 | 195°–205° | 3.91% | 3.97% | 0.1268 | 0.1282 |
| 21 | 205°–215° | 1.44% | 1.70% | 0.0610 | 0.0693 |
| 22 | 215°–225° | 0.97% | 1.01% | 0.0448 | 0.0465 |
| 23 | 225°–235° | 1.71% | 1.75% | 0.0696 | 0.0708 |
| 24 | 235°–245° | 3.46% | 3.22% | 0.1165 | 0.1107 |
| 25 | 245°–255° | 3.00% | 2.89% | 0.1052 | 0.1025 |
| 26 | 255°–265° | 3.35% | 3.15% | 0.1137 | 0.1088 |
| 27 | 265°–275° | 3.70% | 4.39% | 0.1220 | 0.1372 |
| 28 | 275°–285° | 3.24% | 3.26% | 0.1111 | 0.1115 |
| 29 | 285°–295° | 2.98% | 3.03% | 0.1046 | 0.1060 |
| 30 | 295°–305° | 1.22% | 1.06% | 0.0536 | 0.0483 |
| 31 | 305°–315° | 0.85% | 0.97% | 0.0407 | 0.0450 |
| 32 | 315°–325° | 1.23% | 1.15% | 0.0539 | 0.0512 |
| 33 | 325°–335° | 2.02% | 1.89% | 0.0789 | 0.0750 |
| 34 | 335°–345° | 4.01% | 3.61% | 0.1289 | 0.1199 |
| 35 | 345°–355° | 5.03% | 4.61% | 0.1505 | 0.1418 |
| Sum = H | 3.473 | 3.474 | |||
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.