WKT (Well-Known Text) yra tekstinis geometrinių objektų atvaizdavimas pagal OGC standartą.

📝

WKT (Well-Known Text)

Price before payment

.wkt · text/plain

WKT yra tekstinis geometrijų atvaizdavimo formatas, naudojamas duomenų bazėse (PostGIS, SpatiaLite) ir GIS programose. Paprastas ir lengvai integruojamas.

OpenStreetMap data as of 5 October 2026 · 26 days ago

Eksportuoti WKT dabar ✨ Atviroji beta — nemokamai, be apribojimų

Pagrindinės savybės

✓Tekstinis formatas

✓OGC standartas

✓Lengva integracija į duomenų bazę

✓Palaikomi visi geometrijos tipai

All map examples by format

Apie WKT formatą

WKT (Well-Known Text) is the textual encoding of geometry from the OGC standard: POINT(37.6177 55.7558), LINESTRING(...), POLYGON((...)). It is understood by every spatial database and library — PostGIS, SpatiaLite, Shapely, JTS, GEOS — and it can be read by eye, which makes the format indispensable while debugging.

The export is taken when geometry is needed as text: to paste into an SQL query, to put into a test, to pass coordinates to someone else's system, to take a quick look at what came out of the selected area at all.

The output is a single text file in UTF-8. At the top are comments with the bounding box of the area and the coordinate system, then it goes layer by layer: a line like "-- layer: roads" with one geometry per line underneath it. Coordinates are in WGS84 (EPSG:4326) with six decimal places — that is about ten centimeters on the ground.

One important thing: WKT stores shapes only. There are no names, types or other OpenStreetMap tags in the file — if you need attributes, take GeoJSON, GeoPackage or a CSV with a WKT column.

Kokia programa atidaro WKT failus

Šios programos gali atidaryti, redaguoti WKT (Well-Known Text) (.wkt) failus, eksportuotus iš OSM2CDR, ir dirbti su jais:

💻PostGIS 💻SpatiaLite 🌎QGIS 💻Shapely (Python) 💻JTS (Java) 💻GEOS

Format specifications

Open standard
3D coordinates supported
Lossless (no quality loss)
No attributes
Output: 1 file
Well-Known Text (OGC Simple Features). One geometry per line, human-readable. Direct INSERT into PostGIS / Spatialite.

Kas naudoja WKT žemėlapius

🏗

Duomenų bazės (PostGIS)

Geometry is pasted into SQL directly through ST_GeomFromText — with no converters and no intermediate files.

💻

Programavimas

Convenient material for tests and debugging: the shape is visible to the eye right in the source.

📊

GIS analizė

Quick exchange of geometry between GIS tools, all of which understand WKT.

🎨

Sistemų integracija

Passing coordinates to an adjacent system that accepts plain text rather than GIS format files.

Kaip eksportuoti WKT

Pažymėkite sritį

Nubrėžkite stačiakampį arba daugiakampį interaktyviame žemėlapyje osm2cdr.ru

Pasirinkite WKT

Iš 127 prieinamų eksporto formatų sąrašo pasirinkite WKT (Well-Known Text)

Eksportuoti

Spustelėkite „Eksportuoti“ ir gaukite savo .wkt failą per 1–5 minutes

Atsisiųsti

Atsisiųskite paruoštą WKT failą ir atidarykite jį programoje PostGIS

Kaip atidaryti po eksporto

PostGIS — paste the lines as they are: INSERT ... VALUES (ST_GeomFromText('POLYGON((...))', 4326)); the SRID must be specified.
Python — from shapely import wkt, then wkt.loads(line) line by line, skipping the lines that begin with two hyphens.
QGIS — the QuickWKT plugin pastes geometry from the clipboard onto a temporary layer; for a full-fledged layer it is easier to download GeoJSON right away.
Tables — WKT is understood by CSV import in QGIS: "Add Delimited Text Layer", with geometry from the WKT field.
Checking — ST_IsValid in PostGIS or shapely.is_valid: self-intersections after simplification do happen, and it is better to learn about them before loading into a database.