Re: [geomesa-users] Geomesa bounding box query Accuracy

[Sandeep Singh <sandha.iitr@xxxxxxxxx>]

Thanks Emilio for reply the things mentioned in your reply, worked for me.

regards,

Sandeep.

On Thu, Aug 31, 2017 at 6:06 AM, Emilio Lahr-Vivaz <elahrvivaz@xxxxxxxx> wrote:

Hello,

You can control the loose bounding box behavior as a data store parameter with the key "looseBoundingBox" set to Boolean.FALSE, or on a per query basis [1].

More recent versions of the HBase data store (starting with GeoMesa 1.3.2) will have improved accuracy even with loose bounding boxes, if distributed filters are installed as described here [2] and here [3]

Thanks,

Emilio

[1] http://www.geomesa.org/documentation/user/datastores/query_config.html#loose-bounding-box
[2] http://www.geomesa.org/documentation/user/hbase/install.html#deploying-the-geomesa-hbase-distributed-runtime-jar
[3] http://www.geomesa.org/documentation/user/hbase/install.html#register-the-coprocessors

On 08/30/2017 05:38 PM, Sandeep Singh wrote:

Hello,

I am trying the example tutorial, by setting up Hbase database with it. I am running the Hbase QuickStart tutorial http://www.geomesa.org/documentation/tutorials/geomesa-quickstart-hbase.html

The tutorial runs fine, below are some of the problems which I notice in the bounding box query.

Say the bounding box query is like (30,60) to (31,61). Which means I want to do spatial query between latitute 30 to 31 and longitude 60 to 61. The results which I get from geomesa include the some of the points whose locations are like:
(29.5,61.5)
(29.6,61.3) and so-on.
Clearly, these points are not within the bounding box. I want to ask, is there some way to solve this problem. Below are some of my questions to the Geomesa team:

1. What is the bounding box query accuracy by default ?
2. Is there any way to specify somewhere the accuracy of boundung box query, so that it leave the points which are outside of bounding box.

I tried searching through the documentation, and settings but couldn't find anything working for me yet.

Thanks,

Sandeep Singh.

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