In a geodatabase, a mechanism for optimizing access to data based on the spatial column of the business table.
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votes
0answers
59 views
Creating a ShapeFile spatial index programmatically in .Net
I am creating a shapefile programmatically using DotSpatial using the following example syntax / pseudo code
FeatureSet features = new FeatureSet(DotSpatial.Topology.FeatureType.Polygon);
...
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vote
0answers
113 views
How could I make this PostGIS query run faster?
SELECT st_band(rast, 1), st_width(rast), st_height(rast),
st_bandpixeltype(rast, 1), st_bandnodatavalue(rast, 1),
st_scalex(rast), st_scaley(rast), st_upperleftx(rast),
st_upperlefty(rast) FROM ...
0
votes
0answers
10 views
Adding multiple layers to Tilemill from a single sqlite DB
This is a repost of a question I had over at the MapBox support board. Since I wasn't having much luck over there, I'm hoping I would have better success here.
I'm having trouble adding more than a ...
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votes
0answers
27 views
Spatialite, to speed performance, when should I create Views, Indexes or additional spatial tables?
I’ve got a large Spatialite database with a table of lines (roads, rail and water). I created a spatial index of the geometry to speed things up.
This works amazingly well when I’m zoomed in ...
