When you add an interactive map, you can add a layer of geographical data extracted from the software your organisation uses (often ArcGIS). The accepted file format is GeoJSON with an EPSG:4326 – WGS 84 projection.
The default file is often in the EPSG:2949 projection. This projection uses coordinates in metres (e.g. X ≈ 216,000, Y ≈ 5,012,000). However, most GeoJSON viewers (and several web tools, including Cocoriko) only display files correctly if they are in geographic coordinates (longitude/latitude), i.e. in EPSG:4326 (WGS 84).
Here’s how to perform the conversion using QGIS (free)
Open your .geojson file in QGIS.
In the table of contents, right-click → Export → Save features as…
Format: GeoJSON
Click the SCR (reference coordinate system) selection button and choose:
EPSG:4326 – WGS 84
Once the file is in the correct format, Cocoriko will display it. You can add as many geographic layers as you like.
Once you have finished viewing the data, you can reverse the process and export a GeoJSON file, which you can then import into your geographic information system to view the pins and comments.
Si vous avez des questions, contactez support@cocoriko.org.