SpatiaLite is a spatial extension to SQLite, providing vector geodatabase functionality.

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79 views

Convert planar distance to ellipsoid (real) distance

I have the following linestring which approximately marks an airport runway: LINESTRING(-381578.819887 6574044.360475, -378513.534443 6574799.475787) # EPSG 3857 LINESTRING(-3.427781 50.732117, ...
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62 views

Rasterlite db with multi table

When working with Spatialite DBs, I can store multiple tables in single DB. But now I want to store multiple raster tables on a single Rasterlite DB. I tried QGIS for conversion but it converts only ...
3
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1answer
195 views

Can Spatialite SQL statements be issued with a python script in QGIS?

In my previous scripting environments (ms-access and Manifold GIS), it was possible to create and execute SQL queries from withing VBA or VB Script procedures. This is really useful for things such ...
3
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1answer
291 views

How to open a Spatialite non-spatial view in QGIS

I'm using Qgis 1.8.0, and spatialite 2.3 in a Windows Vista machine. I have a database in Spatialite, and I have created a view from one of its tables. When I open it in QGIS, using add Spatialite ...
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196 views

Create new polygon layer based on areas of varying numbers of stacked polygons

I have several species range maps (as polygons) that overlap/stack. From this, I am trying to identify areas of highest biodiversity. Ideally, I'd like to create a new polygon layer, where 1 part is ...
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551 views

how to add a custom SRID to Spatialite

I'd like to create a spatialite database and load it with shapefiles using the Mississippi Transverse Mercator (MSTM) projection, but it doesn't have an EPSG definition in the spatialite library of ...
3
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1answer
179 views

Multiple geometry columns for points, lines, and polygons in spatialite?

I'm rather new to the GIS world and even newer to Spatialite and trying to create a new DB for our application. I would like to create spatial index(es) on the geometry column(s), but our geometry ...
3
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1answer
48 views

How to create a printable data sheet when using edit widget “value realtion” in QGIS 2.0?

I created a spatiaLite Database with a point layer (every point is a tree). Additional I created several tables to fill the columns of the spatial layer with attributes using the editing widget “value ...
3
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1answer
60 views

pyspatialite: Connot insert geometry

I'd like to insert a row with a point geometry with pyspatialite. The sql looks like this: insert into eqdata(origin_time, url, mag, lat, lon, depth, m_a, region, mt, the_geom) ...
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355 views

osm2pgsql loses connection at end of import for large PBF, north-america-latest.osm.pbf

I just wanted to check and see if anybody else out there encountered this issue before I started diving into the code. I'm using osm2pgsql to import OSM data into my Postgres database. I encounter the ...
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287 views

Why does AddGeometryColumn error using the libspatialite-2 DLL with pysqlite2?

What I'm trying to achieve is to create a geometry column of a point based on the latitude and longitude of that particular row in the already created table. Given the following code: ...
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154 views

storing jpeg in spatialite database

How to store jpeg file in spatialite blob column so that spatialite gui and Qgis can recognise the format and show the image. I have created in memory jpeg from raster bands using jpeglib and stored ...
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24 views

Why does the QgsVectorFileWriter have probelms creating vector files?

I am using QGis 2.0.1 and have tried to create a new GIS feature file (SQLite, Spatialite, and Shapefile) of a subset of the data. I am then saving a copy of the style of this layer and applying it to ...
3
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2answers
151 views

Sqlite, Python 2.7 and Spatialite

I am trying to spatially enable my sqlite database: import sqlite3 db = r'c:\temp\mydata.sqlite' conn = sqlite3.connect(db) conn.enable_load_extension(True) cur = conn.cursor() cur.execute(r"SELECT ...
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109 views

Handling non-spatial data for QGIS projects with Camelot

Most of my projects include data which is non-spatial or which is point data and can be managed by a regular relational database. Previously I found Manifold and ms-access were a good combination ...
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87 views

Can layers from Spatialite db be used as input for a Sextante model?

I'm trying to build my first models in SEXTANTE and already fail at the start. It seems not to be possible to add a vector layer which derives from a database. Orginally, the layers are from a .mdb. I ...
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84 views

QGIS Workflow Problem [closed]

I have 3 SpatiaLite layers (one without geometry but with fields that need to be filtered, one with points and one with polygons, both without any non-geometry fields) that need to be combined to a ...
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103 views

ST_Touches function in Spatialite

I'm a newbie to Spatialite so forgive me if the answer to my question is obvious...(I tried looking online but couldn't find the answer to this question). I am trying to use the function ST_touches in ...
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80 views

I'm trying to import united_states.osm into Spatialite and spatialite_osm_net just quits with no error

When I try to run spatialite_osm_net using united_states.osm as input, the program simply stops after Windows presents a pop-up saying the program ended with an error. No other information is ...
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3answers
708 views

Accessing GEOS functions in Python

The issue: I am using Windows 7, 64-bit operating system with Python 3.2. I must continue to use Python 3.2 because of a dependency with another API. I need some functions in GEOS that are not ...
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2answers
133 views

How can I create a multipoint geometry in QGIS?

I've got a Spatialite layer in QGIS with geometry type MULTIPOINT. Now I'd like to add some data in this table in the 'usual' way, so by doing multiple clicks in the map (e.g. left-click, left-click, ...
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3answers
305 views

How to embed metadata into a spatialite layer in QGIS?

Example usage: I have a spatialite layer which contain my fiber optic cable routes. In that layer there is a column named 'Cable types' with coded integer data: 1 for aerial cable, 2 for underground ...
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1answer
62 views

How can I get the ellipsoidal values for length and area using spatialite?

I have spatialite geometry data stored in a spatialite database in WGS 84 (EPSG 4328) format: SELECT Srid(geometry) FROM shape_layer; > 4326 When geometry is being returned as text, it is ...
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487 views

Ogr2Ogr SQLite Geometry Functions

I believe title is all clear.I'm using Ogr2ogr utilities & binaries to read geometry. I used something like this: ogr2ogr -f "SQLite" test2.sqlite test.sqlite -sql "SELECT ...
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1answer
60 views

Problem while Reprojecting

When I try to transform geometries from SRID 2321 to 4326, the transformed coordinates are swapping. Why is this happening? Below are the details Source SRID - EPSG:2321 Source Data Projection ...
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1answer
293 views

In what situations would SpatiaLite be selected over PostGIS, and vice versa?

I know that SpatiaLite is a lightweight solution. Would it be a problem if I put it on a 5K pageview/day site? Is PostGIS too resources-consuming for such usage? The dataset is something like < ...
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1answer
217 views

Is it possible to embed QGIS layer styles in a Spatialite database?

Spatialite is a great alternative to shapefiles - but how could I store the QGIS layer style together with the data so that it has a default style? For a shapefile I would just save a [name].qml with ...
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1answer
1k views

Queries on virtual network in Spatialite only make errors

I've installed Spatialite 2.4 in Ubuntu. I try to convert an osm file into a roads network using this tutorial and make searches on it, but the queries only produce "no column" errors. $ ...
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1answer
108 views

QGIS and SpatiaLite database: Setting user access permissions

SpatiaLite databases seems to match all my desires to store GIS layers and table. But an important question is: is it possible to limit writing to only one user ? If yes, what is the way to do it? I ...
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1answer
117 views

Why are layers imported into a DB with Spatialite-Gui locked from editing?

I have a Spatialite DB which I have imported some shp files too using Spatialite-Gui. I have full read-write access to these layers via the Spatialite-Gui, however when I open these layers from QGIS I ...
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404 views

What's a good way store borehole data in SQLite / SpatiaLite?

I have a bunch of bores / wells with downhole data. The 'header' info for each borehole can easily go into a single table, but I'm wondering how best to store the downhole log data. Typically they are ...
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2answers
274 views

Specifying a file for VirtualShape in SpatiaLite [closed]

I'm fairly very new to spatialite, and am stuck on something very basic. I'm creating a virtual table from a shapefile using virtualshape. This works fine when the shapefiles are in the same folder ...
2
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1answer
50 views

OSM import: some features are missing

After importing OSM-Data to my qgis-project (as SpatiaLite database and/or shapefile-extract from planet.osm), some features are missing or have no attribute values. For example that lake: ...
2
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1answer
60 views

How to use makeline() function for more than 2 points in spatialite?

Is it possible to use makeline() function to make linestring geometries in spatialite for connecting more than 2 sequence points? Suppose I have four sequence points P1, P2, P3, P4. Or are there any ...
2
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2answers
50 views

How can I display a spatialLite view in a custom data sheet with print composer

I created a spatiaLite Database with a point layer (every point is a tree). Additional I created several tables to fill the columns of the spatial layer with attributes using the editing widget “value ...
2
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2answers
91 views

How to hand over polygon attribute to new point while digitizing?

My task is to work with bird observation data in an area, that is divided into zones as different polygons (A1, A2, etc.). I have the hand-written lists of observations and want to bring all entries ...
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1answer
411 views

How to build Android spatialite?

I have been trying to build spatialite for Android for a few days now without success. I have even tried the recent documentation from the Google project page here: ...
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2answers
95 views

Spatialite as a DBMS-server with GeoDjango?

I would like to add a spatial component to my Django application. I turned out to GeoDjango immediatly. I am wondering now if spatialite could be used as DBMS-server for an application in Prod. Grosso ...
2
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2answers
494 views

Why is Spatialite delivering “Invalid SRID” error message

Qspatialite in QGIS 1.8 (and also Spatialite-gui) delivers an "Invalid SRID" error message when I try to load shapefiles with a SRID value of 3814 (Mississippi Transverse Mercatur). The SRID is ...
2
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1answer
423 views

OSM data, line and polygon confusion

Taking some OSM (*.osm) data downloaded from Geofabrik I have created a Spatialite database using spatialite_osm_map. Now I have problems, because some of the data that is supposed to be in the form ...
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2answers
268 views

QSpatialite install error in QGIS

I'm installing QGIS 1.7.4 in windows 7 & having problems with QSpatialite. I get 3 messages... Message #1 This DB a valid SQlite DB, but not a valid SpatiaLite DB. QSpatiaLite will now try to ...
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1answer
345 views

How to get spatialite_osm_net from spatialite

I am using windows 7. I downloaded spatialite-tools (precompiled) from the following site. But there is no "spatialite_osm_net" tool available. For one of my project I was trying to convert the OSM ...
2
votes
1answer
786 views

How to combine MapInfo tab files into one spatialite DB?

I have many folders, each with a collection of MapInfo tab files (each folder has the same table names). For each folder I want to merge the tab files into one spatialite DB. My current method is to ...
2
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1answer
489 views

How to import SpatiaLite data into GRASS?

How can I import SpatiaLite tables into GRASS? Are there any restrictions I should be aware of? How does GRASS cope with columns that don't have a specific type (Sqlite tends to create such columns ...
2
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1answer
130 views

Spatialite: Convert polygon to multi-polygons based on common field

I have a list of polygons which should be multipolygons: PK_UID | PolygonID | Geometry ------------------------------ 1 | 1 | polygon 2 | 2 | polygon 3 | 1 | ...
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2answers
703 views

Can't open Spatialite db from openstreetmap in Quantum GIS

I am new to QGIS, OpenStreetmap and Spatialite. I'm trying to get the (OSM) map data into a (SQLite) compact form I can eventually use for realtime reverse geocoding in a vehicle. Quantum is just for ...
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1answer
253 views

Open source software for car navigation on iOS platform

I'm trying to make a car offline navigation app for iOS. Now I analyze OpenStreetMap features what to use. I would like to know if there is open source solution for the following parts of app: best ...
2
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1answer
367 views

How to configure wampserver for spatialite

I am in windows 7. I installed WAMPServer. Now, I can not load spatialite libraries. It is showing warning.. Warning: SQLite3::loadExtension() [sqlite3.loadextension]: Not supported in ...
2
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3answers
2k views

Spatialite in .NET Application - AccessViolationException was unhandled

I am trying to use Spatialite in a .NET application using the System.Data.SQLite provider. Interestingly enough, everything works as expected except an error gets thrown at the very end when the ...
2
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1answer
483 views

How do I query for all polygons within a distance from a point?

Call me stupid, but somehow I couldn't figure out how to do the following. I've got a testing shapefile with 18 features, which I successfully imported into GeoDjango (1.3, running on Spatialite). As ...