Questions tagged [spatial-framework-hadoop]

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Defining coordinate system for finding distance in meters [duplicate]

What should I do to find the distance between two very far points? p1 = "POINT(6.2 61.1)" p2 = "POINT(6.1 61.0)" select ST_Distance( ST_Transform(ST_GeomFromWKT('$p1'), 'EPSG:4326', '$epsg'), ...
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117 views

How can I limit a Hive spatial binning query to a specific map extent?

I'm trying to do a HQL query based off a map extent. I cant get this to work, what am I doing wrong? I'm using the taxi_demo in the ESRI example. SELECT ST_Bin(0.001, ST_Point(dropoff_longitude,...
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1answer
353 views

Proximity query in Hive using ESRI geospatial library

I have one table of lines and one of points and need to find all pairs of line + point with a proximity < 10 meters. The documentation for the ESRI hive library completely elides any discussion of ...
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1answer
168 views

Join on range query using Esri's GIS Tools for Hadoop?

I am getting myself acquainted with Esri's GIS Tools for Hadoop. Working with Hive. One of my tables, A, has user lat-lons. Another, B, has landmarks and their lat-lons. How do I join two tables so ...
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1answer
274 views

Reprojecting a Geometry in Hadoop GIS?

I am using ESRI's spatial framework for Hadoop, in order to add spatial support to Hive. One scenario that I find very often, is to have layers in different CRS, which I want to relate in the same ...
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0answers
460 views

Error using ST_Geometry Aggregate Function for Hive

I am using the ESRI framework that extends the Hive syntax to support spatial types and operations. In particular, I am trying to use an aggregated geometry function, announced in this blog post in ...
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1answer
700 views

Query to Dissolve Nearby Polygons on Hive

I am using the ESRI spatial framework for Hadoop, that extends Hive to use spatial types and operations. My objective is to translate a set of simple queries on PostGIS into Hadoop, in order to ...