---
name: "Tirex::Backend::OpenSeaMap"
section: "3pm"
platform: "linux"
package: "tirex"
version: "0.7.1-3+b2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Tirex::Backend::OpenSeaMap"
---

# Tirex::Backend::OpenSeaMap(3pm)

OpenSeaMap backend for Tirex

## NAME

Tirex::Backend::OpenSeaMap - OpenSeaMap backend for Tirex

## DESCRIPTION

This backend calls an external Java program to generate an OpenSeaMap  meta tile. The Java program is here: https://svn.openstreetmap.org/applications/editors/josm/plugins/seachart/jrenderpgsql/

Config parameters for the map file:

- dburl the JDBC database connection URL, with username and password if needed

  - jar the JAR file containing the JRenderPsql class to use

  - scalefactor the scale factor (defaults to 1.0)

  - tilesize the tile size (should be 256 \* scalefactor to avoid issues)

  ## METHODS

### $backend-\>init()

This method initializes things specific to this backend.

### $backend-\>check\_map\_config($map)

### $backend-\>create\_metatile()

Create a metatile.