Data Input-Output
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Vector Read capabilities
OpenJUMP natively support these vector files:
- SHP – ESRI Shapefile (Wikipedia and ESRI Shapefile specification)
- GML – Geographic Markup Language file, ver. 2 (See also Working with GML)
- JML - JUMP Geographic Markup Language file, a modification of GML file format which doesn't require an extra input/output template
- WKT – Well-Known-Text file, which uses simple text to define geometrical shapes
- FME - GML files created by SAFE's Feature Manipulation Engine toolsfor data transformation and translation.
- JSON - GeoJSON files (Wikipedia and GeoJSON Web Site)
To load a file, choose Open Files... function in File menu.
To open GML files OpenJUMP requires input template file (see VIVID SOLUTIONs – Jump Workbench User's Guide – par. 12.1 Writing Input Template, page 48).
WKT files generally do not have attributes. They can be used to draw geometries in the Layer View or to store usefull geometries that can be used in other project (e.g. Drawing point symbols to use with Cadplan vertex plugin (see also Drawing point symbols).
Read compressed vector files
Openjump can read shp, jml or wkt formats embeded in a zip file.
[OpenJUMP 1.6] OpenJUMP also supports bzip2 and gzip compressed files e.g. data.shp.gz.
Write capabilities
To save a dataset to a new file choose "Save dataset as..." in the File menu. Remenber that SHP can have only one geometry (point, line or polygon), while JML, GML, GeoJSON and FML can have all the geometry.
If you want to convert a JML, GML, GeoJSON or FML file to a Shapefile, remember to copy the three geometries features in three different layers (Using Edit>select items by geometry type and choosing point/Linestring/Polygon) and saìve them separatelly
OpenJUMP can open other types of file using external plugins. See Import Export File wiki page
See also Working with GML page from original JUMP1.2 User Guide