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Esri / spatial-framework-for-hadoop

The Spatial Framework for Hadoop allows developers and data scientists to use the Hadoop data processing system for spatial data analysis.
Apache License 2.0
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The accuracy of the BoundaryShape binary field is problematic #151

Closed rarewei closed 4 years ago

rarewei commented 6 years ago

I use GeoJson to create a table. default GeoJson like this: default But using Hive ST_ASTEXT function, the result is less than one bit。like this POLYGON ((104.76771238499998 26.762176599999975,

so how to fix that?

randallwhitman commented 6 years ago

Is the difference more than, or less than, the tolerance of the spatial reference?

rarewei commented 6 years ago

Sorry...I mean after loading the data into Hive by that function,my result is 1 bit less than original data. This affects the correctness of intersect results.

randallwhitman commented 6 years ago

What is the absolute error? What is the relative error? I don't see numbers that can be copy-pasted into a calculator.

randallwhitman commented 4 years ago

Absent additional information, this is assumed to related to floating-point roundoff and not affect the result more than the spatial-reference tolerance.