Questions tagged [sqlite]

A self-contained SQL database engine.

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20 views

Is there a way to save a default layer name to a spatialite/geopackage table?

I'm a huge fan of being able to save default symbology to spatialite/geopackage tables, however I don't like that when I import a table as a layer it takes on the name "database name table_name". Is ...
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0answers
63 views

Why ST_Distance give something different to 0?

I have this SQL: select ST_Distance(GeomFromText('POINT(-0.338767 39.55425)', 4326), geom) dis1, ST_Distance(GeomFromText('POINT(-0.338767 39.55425)', 4326), geom, 1) dis2, AsEWKT(geom) ...
2
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1answer
29 views

GDAL SQLite geometry error

I am having the following issue writing points to a SQLite file using ogr with SPATIALITE enabed: ERROR 1: Cannot insert feature with geometry of type POINTZ in column GEOMETRY. Type POINT expected ...
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53 views

Processing a Sqlite table in standalone QGIS application

I have been trying to use a single table of a Spatialite db in a standalone Python application. I have run it through the QGIS interface to find how it used the input pathway, which was: 'dbname=\'C:/...
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Loading spatialite tables into GeoPandas GeoDataFrame

Using information from here, I am trying to load a result of a SQL Python selection into a Geopandas geodataframe. I know pyspatialite is not longer maintained, so have tried using the dbapi2 module ...
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1answer
32 views

Determining whether the geometry field in a SQLite table has z coordinates using Python

In the Shapely package, there is a function that allows you to determine whether coordinates include a Z value. It is object.has_z. Is there a way that a similar command can be carried on the ...
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1answer
71 views

Error: Geometry constraint geom-type or SRID not allowed. How to ensure the correct geom-type?

Following the top answer on a previous question about storing geometries in a spatialite database, I am trying to update a spatialite table using: engine.execute("SELECT AddGeometryColumn('your_table'...
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0answers
49 views

Loading and displaying NDS (Navigation Data Standard // SQLlite)?

On QGIS 3.4 (Windows), I would like to load and display NDS (Navigation Data Standard) data (attributes and geometry). I succeed in loading NDS data sample from openlanemodel. Via the QGIS DB manager,...
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1answer
82 views

Difference between MapBox mbtiles and offline mbtiles for MapBox Android SDK

I know what have some difference between MapBox mbtiles and offline mbtiles for MapBox Android SDK. In offline mbtiles for SDK besides tiles contains: Style JSON. All fonts and icons associated ...
2
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1answer
35 views

Valid datetime in GeoPackage

I am adding spatial objects to a GeoPackage database. To register a new spatial table I use a formulation like: INSERT INTO gpkg_contents (table_name, data_type, identifier, description, ...
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0answers
62 views

GRASS: import PostGIS vector layer into SQLite database

I am working with vector layers (points) composed of more than 100 000 geometries. These layers are originally in a PostGis database and I import them with v.in.ogr, using a formulation like: v.in....
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1answer
51 views

Importing NAS Data into SQLite database? [closed]

I'm trying to import German NAS-Data into a SQLite- Spatialite-database. For this I use the following command: ogr2ogr -f SQLITE --config OGR_SQLITE_CACHE 8192 -gt 65536 -skipfailures -s_srs "+proj=...
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1answer
16 views

Python SQLite JSONSTRINGLIST

I have converted an XML (NAS) - File into a SQLite-Database using ogr2org - which worked quite well. Now I'd like to read the data using Python (3.72) - which works quite good as well. But there is a ...
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0answers
56 views

How to delete openmaptiles (OSM Mbtiles) layers

I am struggling with converting PBF to Postgresql Table (importing only certain layers) or editing them, for the volume of the data. (world scale of PBF is about 80Gbs) meanwhile, I have found that ...
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1answer
40 views

Add FID to attribute table using ogrinfo

I want to add the fid to the attribute table using ogrinfo in OSGeo4W Shell. Here is my code: ogrinfo layer.shp -sql "ALTER TABLE layer ADD COLUMN ID integer" ogrinfo layer.shp -dialect SQLite -...
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Using QgsVectorFileWriter to write several layers on same Spatialite file?

Does anybody knows how to write several QGIS layers on a same spatialite file using QgsVectorFileWriter or another way to add several same layers type to a Spatiallite specific table using ...
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22 views

Delete rows or tables from mbtiles

I have downloaded mbtiles from openmaptiles.org and I am trying to remove layers that I do not need using DB Browser for SQLite. What I am trying to get rid of is the ocean layer and I do not know ...
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2answers
68 views

SQLite spatial function

I have a SQLite database, with point and linestring geometries. Between the points(blue) and the linestring(green) is a gap, which I want to close with another line(red). The line should have angle of ...
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0answers
35 views

Get a column from database and populate the shapefile attributes?

I would like to know how to get copy a specific columns from the database and add that column in a shapefile attribute table? I am open to other better ideas.
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0answers
114 views

Loading editable SQLite layer in QGIS?

I converted a shapefile to a SpatiaLite database so I could work with attributes with a length longer than 254 characters, and also not see some columns and change their order. In QGIS 2.18.16 I have ...
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1answer
96 views

Can a Geopackage style be deleted through SQL window in DB Manager?

I am trying to clean up a Geopackage and as part of this I would like to delete some styles from the "layer_styles" table. I have tried doing this with the below query in the SQL window of the DB ...
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1answer
325 views

How to open and add SQLite connection to browser with PyQgis

I have a code to open the layers of a SQLite database. When executing this code, the layers are loaded correctly (1 & 2). However i also need to connect to the database and show the connection in ...
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1answer
197 views

Can multiple MapBox vector tile mbtiles be merged just using SQLite?

Is it possible to combine two vector mbtiles files using just SQLite? I noticed this question Joining several raster .mbtiles? but it does not seem to work with vector files. I also came across ...
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1answer
265 views

Difference between SQLite and SpatiaLite? [closed]

I wrote telegram bot for my uni project that receives from user spatial and non-spatial data (coordinates and user identity) and puts them in an SQLite database. Then when I extract this database and ...
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1answer
147 views

Adding SQLite layers to ArcGIS Pro throws error “Exception from HRESULT: 0x80041538”

I have a SQLite database which I have just created in QGIS and I want to open it in ArcGIS Pro. In Catalog I have added the database to the project but when I try to add layers to the map I get the ...
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0answers
70 views

Extracting polygons from mbtiles

Currently, one can extract features within a bounding box from an mbtiles file using tilelive-copy. However there is no way to extract features within a polygon from an mbtiles file. The mbtiles-...
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1answer
59 views

Mapcache + SQLite

i tried to configure mapcache to use with sqlite database, but i have some problems. I want make cache for four layers, but i dont know, how to do this. When i make more tilesets, i get error: ...
7
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1answer
158 views

Creating SpatiaLite view (for use in QGIS) from non-spatial SQLite database?

I have a plain SQLite database that contains X, Y coordinates in a table. Data are edited via an MS Access front-end using the ODBC driver and so I want to avoid storing them in a geometry blob that ...
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0answers
20 views

How to get the identify form to load with SQL query view?

I've loaded an SQL query on a table in a spaitalite database as a view. The view has loaded fine and the attributes table is showing all the data, but the Identify tool won't bring up a form. Is there ...
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1answer
314 views

How does QGIS 3.2.3 handle or create spatial indexes within a geopackage?

My frame of reference is: Does QGIS automatically use spatialite spatial indexes? This explain that QGIS uses QgsSpatiaLiteFeatureIterator for Spatialite Data Provider Spatial indexes in GeoPackage ...
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1answer
346 views

Installing Spatialite on Centos7: select mod_extension() doesn't work

I'm trying to install Spatialite on a CentOS 7 server. Sqlite (version 3.7.17 ...), works fine. Using the command yum list | grep spatial the result is the follow So I've installed Spatialite ...
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1answer
270 views

How do I insert rows into a spatial table within a geopackage file via a SQL INSERT statement?

I am attempting to insert rows into a spatial table within a geopackage file using DBeaver 5.1.1. I receive an error from the triggers, referencing functions that don't exist: ST_IsEmpty. Do I need ...
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1answer
39 views

Loading format other than shapefile with ArcGIS runtime 100

I know how to load a feature table for ArcGIS runtime 100 in C# ShapefileFeatureTable myShapefile = await ShapefileFeatureTable.OpenAsync(Path); FeatureLayer fl= new FeatureLayer(myShapefile); But ...
4
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2answers
661 views

Importing Survey123 SQLite Database from Device

I need to import an SQLite database generated by ESRI Survey123 to a csv or some other useful format. I modified this script so that I can use arcToolbox to acquire input and output parameters. I am ...
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0answers
124 views

Adding SpatiaLite to Visual Studio project (already has SQLite)

I am very new to SpatiaLite. I am working on a large Visual Studio C++ project that already supports SQLite, and I am trying to add SpatiaLite capabilities to it. After reading the documentation and ...
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2answers
554 views

ogr2ogr mapFieldType giving an error

I am trying to convert a GeoJSON file into an SQLite database and I want to set to INTEGER a specific field in the SQLite final file. I use the following command line: ogr2ogr -f SQLite -...
2
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0answers
178 views

ogrinfo: Unable to use sqlite dialect with -oo GEOM_POSSIBLE_NAMES open option

I am having problems using the SQLite SQL dialect to read a CSV file using ogrinfo, but only if I also specify a geometry column using the -oo GEOM_POSSIBLE_NAMES open option. Suppose file test.csv ...
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0answers
72 views

ogr2ogr: extract text elements from PDF into attributes

I have PDF created by the local geodetic authority which is kind of geospatial and contains layers of cadastre underground services (water, sewer, etc) as lines, points, and textual attributes ...
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0answers
129 views

Storing a Spatial Index in Sqlite

I would like to store an r-tree or quadtree index in a sqlite database using python. Does anyone know if there is any code to do this? A bit of background: The dataset cannot be moved to another ...
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2answers
397 views

How to connect to a SpatiaLite database using ogr in Python?

I need to connect to a SQLite/SpatiaLite database to copy data there. I have done the same with PostgreSQL/PostGIS like this: connection_string = "dbname={} user={} password={} host={} port={}"....
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2answers
376 views

Unique constraint for SpatialLite geometry column

I am creating a SpatiaLite database where I want to ensure that the contents of the geometry column for a table are unique. For normal SQL I would add a UNIQUE constraint to that column but, I don't ...
1
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2answers
113 views

How to make an arrow from a polygon centroid to a point

I would like to present in QGIS a graphical information I have in two vector layers, an arrow. One layer has catchemnt areas as polygons and the other has the outlet points. The catchment areas layer ...
6
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0answers
162 views

ESRI Runtime Geodatabase Shape storage

Does anyone out there know the geometry storage encoding for ESRI's Runtime Geodatabase (.sqlite) format? aka mobile geodatabase. There are 'GDB_ tables', 'st_ tables', 'RTREE indexes' and other ...
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0answers
106 views

SQLITE - Buffer 30 m

I have a DB in SQlite with several layers. I would like to perform a spatial analysis, by buffering several water lines with 30m from origin. I am using DB Manager in QGIS 2.14 and the SQL statement ...
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1answer
181 views

What is the max amount of connections a GeoPackage can handle in GeoServer?

I'm currently working on a GeoServer deployment and for simplicity, I want to to transition to using GeoPackages rather than Shapefiles (longer column names, less work integrating the data, etc.). As ...
4
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1answer
245 views

Sqlite ERROR: Too many connections: max 64

I would like to use the ST_SingleSidedBuffer SpatiaLite SQL function to create one-sided buffers around all lines in a layer. The following functions works fine, until the 64rd iteration. Then the ...
2
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1answer
134 views

How to reference piped input in ogr2ogr SQL statement

I have a geojson data set that I am piping into an an ogr2ogr command using /vsistdin/. However, I am having trouble figuring out how to actually refer to this input in the SQL statement I'm running. ...
2
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1answer
286 views

How to use spatialite SQL functions in GDAL/OGR

I would like to create one-sided buffer geometries around linestrings. I found this ST_SingleSidedBuffer SpatialLite function that I would like to use in my Python script. When I run the function ...
2
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0answers
229 views

Converting OSM.PBF to Geopackage in CLI?

I would like to refresh this tutorial for my purposes - background vector map in one file - just to load in QGIS. My idea is a script doing this: Import directly downloaded Openstreetmap PBF file (...
4
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1answer
351 views

Spatial indexes in GeoPackage files

I'm working with GeoPackage files built with QGIS3. I tried to execute some spatial queries but it was really slow, so I'd like to speed it up with indexes. After some readings I tried create ...