Metroteca experiment

Lisbon
Schematic vs geography

The same stations and connections, arranged differently. Switch between a hand-tuned 45° schematic and station geography with north at the top. Straight geographic links are not tunnel alignments.

Only the selected metro network is shown. Other transport modes and future extensions are excluded. Station names remain in the local language.

Line or station selection is preserved when switching views. Choosing a station resets the line filter. Geographic labels are available in the list and on hover; they are not all shown at once in the dense centre.

Schematic · All lines

Relative distance change

67.7 pts

Stations: 50 · Connections: 52

For the entire comparison, independent of filters. Higher values mean more changed proportions, not lower quality or a percentage of map error.

Method and limitations

For each connection, measure the straight distance between its endpoints in each view. Divide each set of distances by its own mean. Score = 100 × root mean square of the difference between these normalized distances.

Zero means identical relative adjacent distances; there is no upper limit. Translation, rotation, reflection and uniform scale do not change the score. It ignores angles, bends, label collisions, travel times and readability. Do not rank cities by this number.

Geography uses a local equirectangular approximation: longitude scaled by the cosine of the mean station latitude. This is for compact city networks, not a geodetic calculation. Each line connection has equal weight.

OSM snapshot: 2026-09-13. Topology reviewed: 2026-09-18. Method: relative-edge-chord-rms-v1.

Stations as text

Station	Line
Rato	Amarela
Marquês de Pombal	Amarela / Azul
Picoas	Amarela
Saldanha	Amarela / Vermelha
Campo Pequeno	Amarela
Entrecampos	Amarela
Cidade Universitária	Amarela
Campo Grande	Amarela / Verde
Quinta das Conchas	Amarela
Lumiar	Amarela
Ameixoeira	Amarela
Senhor Roubado	Amarela
Odivelas	Amarela
Santa Apolónia	Azul
Terreiro do Paço	Azul
Baixa-Chiado	Azul / Verde
Restauradores	Azul
Avenida	Azul
Parque	Azul
São Sebastião	Azul / Vermelha
Praça de Espanha	Azul
Jardim Zoológico	Azul
Laranjeiras	Azul
Alto dos Moinhos	Azul
Colégio Militar/Luz	Azul
Carnide	Azul
Pontinha	Azul
Alfornelos	Azul
Amadora Este	Azul
Reboleira	Azul
Cais do Sodré	Verde
Rossio	Verde
Martim Moniz	Verde
Intendente	Verde
Anjos	Verde
Arroios	Verde
Alameda	Verde / Vermelha
Areeiro	Verde
Roma	Verde
Alvalade	Verde
Telheiras	Verde
Olaias	Vermelha
Bela Vista	Vermelha
Chelas	Vermelha
Olivais	Vermelha
Cabo Ruivo	Vermelha
Oriente	Vermelha
Moscavide	Vermelha
Encarnação	Vermelha
Aeroporto	Vermelha