[Qgis-user] File-based Mastermap

[James Stott]

You can build spatial indexes for shapefiles in QGIS.

 

Open the properties dialog for the layer, then select the general tab.
There is a button for Create Spatial Index.

 

Not sure what version it was added.

 

From: qgis-user-bounces at lists.osgeo.org
[mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of
jonathanmoules at warwickshire.gov.uk
Sent: 28 September 2011 10:39
To: qgis-user at lists.osgeo.org
Subject: [Qgis-user] File-based Mastermap

 

I need to deploy four stand-alone laptops with a basic GIS (data viewing
only) and have chosen QGIS for this. The data held is for the entire
county of Warwickshire, and one of the datasets I need to put on there
is MasterMap. Specifically the datasets I'm using are:

Topographic line: 3.7 million features
Topographic Area: 1.3 million features
Cartographic Text: 250,000 features

Given the dataset size, obviously the first choice is a database, but as
these are stand-alone laptops that must have the simplest setup possible
(they're going to be used out in the field away from tech-support) I've
ruled that option out.

I tried shapefile's but it turns out that spatial indexes in Shapefiles
are an ESRI-only thing, so the dataset takes literally minutes to load
per pan.

Can anyone can suggest a format I could use that would allow fluid
viewing of this data in QGIS? I have access to FME, so can convert to
pretty much any format.

Thanks,
Jonathan

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James Stott BSc (Hons) MSc | Senior Professional
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