I am using GeoTools for merging my individual shapefiles but I get an exception when the size of the shapefile increases beyond 2GB.
How can I do this using Geotools?
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2You need to use a different data type, e.g. geopackage.– ErikCommented Sep 28, 2021 at 14:54
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2Shapefile have an "official" size limit of 2GB, you may try to create bigger shapefile but that's not advised as Erik said it's time to try new a output format– J.RCommented Sep 28, 2021 at 15:10
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3In fact Shapefile can go over 2gb (up to 8gb), GDAL OGR shapefile driver can output shapefile up to 4gb (gdal.org/drivers/vector/shapefile.html#size-issues) but it's never a good idea to not follow specification as it may causes compatibility problem down the line. I advise you to try Ian Turton answer using geopackage– J.RCommented Sep 28, 2021 at 15:55
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1 Answer
As everyone said in the comments - you can't. Shapefiles use a 32bit pointer internally and it breaks if you go over 2Gb. Switch to a GeoPackage, fortunately as Datastores are interchangeable all you will need to do is change the parameters you are creating it with.
HashMap<String, Object> map = new HashMap<>();
map.put(GeoPkgDataStoreFactory.DBTYPE.key, "geopkg");
map.put(GeoPkgDataStoreFactory.DATABASE.key, outFile);
Datastore store = DataStoreFinder.getDataStore(map);
answered Sep 28, 2021 at 15:16
