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Category Archives: Spatialite
The release of Spatialite 4.0 was just announced on the Spatialite user group. You can download it from the Spatialite website. And while you are on the website, check out the page about switching to 4.0. Version 4.0 introduces several … Continue reading
A short note on how to create a spatial table from a table with latitude and longitude coordinates in your SQLite / Spatialite database. In the example below, the table I am working with is ‘labels’.
I have a vector layer ‘nursery data’ in a Spatialite database. The coordinate reference system of the layer is WGS84 geodetic (EPSG 4326). What if I need to reproject the layer in WGS84/UTM37N (EPSG 32637)?
A quick note on adding two columns with X and Y values in a vector layer in spatialite. Spatialite stores the information about the geometry in binary format in the ‘Geometry’ field. You can use the Spatialite function AsText() to … Continue reading
I am just back from vegetation survey in Kenya and Uganda. Before starting with the analysis, I will have to go through the more boring data entry and organization. I will use a Spatialite database to store all the data … Continue reading
Looks interesting, a R package that provides bindings to Spatialite functionalities. Through this bindings one can carry out the spatial functions available in Spatialite from within R using simple SQL statements.
I came across this post by underdark about how to select a random sample from a table in PostgreSQL. You can achieve the same (selecting 1000 random features from a table) in SQLite using something like below: