spatialite

问题 I am trying to load Spatialite as extension in qSqlite ( Qt 5.9), I have done that before with Qt4.8, but I failed with the QT5.9. I changed the sqlite.pri by removing "SQLITE_OMIT_LOAD_EXTENSION", and I did some change on the sqlite.c by removing the " #define SQLITE_OMIT_LOAD_EXTENSION 1 ", and adding " #define SQLITE_ENABLE_LOAD_EXTENSION 1 ". I also add the following lines to openDatabase(....) #if defined(SQLITE_ENABLE_LOAD_EXTENSION) | SQLITE_LoadExtension|SQLITE_LoadExtFunc #endif Now

问题 Recently, I was studying spatialite.I can write 2D data(like this:POINT(1 1)) into the spatial data table,but I can't write 3D data(like this:POINT(1 1 1) ) into the spatial data table. Who can tell me spatialite whether support 3D? If support ,how can I write a 3D data? 回答1: Yes, Spatialite supports 3D geometries (actually 2.5D geometries). On why it does not work for you, probably your geometry column is not defined as XYZ . You can check geometry metadata with the query: SELECT * FROM

问题 Recently, I was studying spatialite.I can write 2D data(like this:POINT(1 1)) into the spatial data table,but I can't write 3D data(like this:POINT(1 1 1) ) into the spatial data table. Who can tell me spatialite whether support 3D? If support ,how can I write a 3D data? 回答1: Yes, Spatialite supports 3D geometries (actually 2.5D geometries). On why it does not work for you, probably your geometry column is not defined as XYZ . You can check geometry metadata with the query: SELECT * FROM

来源： https://stackoverflow.com/questions/59157479/django-core-exceptions-improperlyconfigured-spatialite-requires-sqlite-to-be-co

来源： https://stackoverflow.com/questions/59157479/django-core-exceptions-improperlyconfigured-spatialite-requires-sqlite-to-be-co

来源： https://stackoverflow.com/questions/59157479/django-core-exceptions-improperlyconfigured-spatialite-requires-sqlite-to-be-co

问题 I have a table called IK_TEMP and it contains columns called data, range . String sql = "SELECT DATA, RANGE FROM IK_TEMP"; try (Connection conn = this.connect(); Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery(sql)){ // loop through the result set while (rs.next()) { System.out.println(rs.getString("DATA") + "\t" + rs.getBytes("RANGE")); fromBytes(rs.getBytes("RANGE")); } The RANGE field(binary / BLOB) field is already encoded using binary from arcGIS and saved in

问题 I have a table called IK_TEMP and it contains columns called data, range . String sql = "SELECT DATA, RANGE FROM IK_TEMP"; try (Connection conn = this.connect(); Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery(sql)){ // loop through the result set while (rs.next()) { System.out.println(rs.getString("DATA") + "\t" + rs.getBytes("RANGE")); fromBytes(rs.getBytes("RANGE")); } The RANGE field(binary / BLOB) field is already encoded using binary from arcGIS and saved in

问题 In my table I have two columns, Data and Range . Range field is encoded binary from ArcGIS. this format is supposed to be a standard format with in the Geo spatial industry. https://www.gaia-gis.it/gaia-sins/BLOB-Geometry.html http://www.geopackage.org/spec120/#gpb_format need to use the srs_id to decode the Range field. String sql = "SELECT DATA, RANGE FROM IK_TEMP"; try (Connection conn = this.connect(); Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery(sql)){ //

问题 Does anyone know whether it is possible to execute spatialite functions on sqlite-databases in intellij? Reference of spatialite functions: http://www.gaia-gis.it/gaia-sins/spatialite-sql-4.2.0.html In particular, I would be interested in using functions on type Point. Thanks! Edit: Functions do work within the official spatialite-gui, however I don't think there is a way to use the spatialite-gui programmatically, is there? Here is what I tried so far: In intellij I connected the Java JDBC