One small thing about GeoJSON ... >From the JSON/ADM parser perspective, GeoJSON is still JSON. "Disambiguating" or distinguishing between them might not be a straightforward process. Getting GeoJSON parsed into AsterixDB internal geometries would probably be the first step...
On Fri, May 12, 2017 at 11:15 PM, Mike Carey <[email protected]> wrote: > Just to chime in briefly on the "format" thread - there are two formats to > keep in mind - the input format (serialized format, e.g., how JSON relates > to the spatial types) and the internal format (which in AsterixDB is a > different, more efficient, binary format). We can look at both in the > project. Also important are the OPERATIONS that go with the format (i.e., > the functions that we'll have in the query language for operating on, > writing predicates about, etc., the spatial data). > > Cheers, > > Mike > > > > On 5/11/17 2:28 PM, Ahmed Eldawy wrote: > >> Hi Riyafa, >> >> I'm glad you started looking into the details. I agree with Mike that you >> need to study the current geo support first. It will be highly desirable >> for your work to be compatible with the current support so that we can >> seamlessly unify the underlying code without disrupting the high-level >> API. >> As for the format, it would be nice to support both WKT and GeoJSON as >> they >> are both widely used. However, I think we should start with GeoJSON since >> it is becoming more popular with modern devices, e.g., GPS, smart phones, >> and IoT sensors. Later, we can support WKT as well. It will be a matter of >> writing a different parse function. >> Esri library [https://github.com/Esri/geometry-api-java] supports both >> WKT >> and GeoJSON. You can study it and see if we can use it in our project. >> >> Thanks >> Ahmed >> >> On Wed, May 10, 2017 at 7:11 AM, Mike Carey <[email protected]> wrote: >> >> I will leave it to the official GSC mentor (who's also a leading expert on >>> big spatial data) to direct - I was just suggesting that step 0 should be >>> to become familiar with what's already there currently, to have a working >>> knowledge of that as background. >>> >>> :-) >>> >>> Looking forward to seeing this project unfold! >>> >>> Cheers, >>> >>> Mike >>> >>> >>> >>> On 5/9/17 10:14 PM, Riyafa Abdul Hameed wrote: >>> >>> Hi, >>>> >>>> As I understand by playing with current support of GIS objects( point, >>>> polygon, circle, and rectangle) is similar to the Well known text >>>> format--correct me if I am mistaken. Hence initially we could support >>>> other >>>> GIS objects in WKT and support GeoJSON if time permits. >>>> >>>> Thank you. >>>> Yours sincerely, >>>> Riyafa >>>> >>>> On 8 May 2017 at 23:31, Mike Carey <[email protected]> wrote: >>>> >>>> I would also suggest playing with the current geo support in AsterixDB >>>> >>>>> (curretn types and indexing and functions in queries) to get warmed up. >>>>> Welcome aboard...!! >>>>> >>>>> Cheers, >>>>> >>>>> Mike >>>>> >>>>> >>>>> On 5/8/17 8:51 AM, Riyafa Abdul Hameed wrote: >>>>> >>>>> Hi, >>>>> >>>>>> I have been selected to contribute to the issue ASTERIXDB-1371 >>>>>> <https://issues.apache.org/jira/browse/ASTERIXDB-1371> for GSoC this >>>>>> time. >>>>>> This being the community bonding period I am trying to familiarize >>>>>> myself >>>>>> with the code base of AsterixDB and to get a grasp of the task. >>>>>> >>>>>> I am under the impression that the package *org.apache.asterix.om >>>>>> <http://org.apache.asterix.om> *has the classes for handling data >>>>>> models >>>>>> for AsterixDB and have been looking into them to figure out the >>>>>> implementation details. Please correct me if I am mistaken. >>>>>> >>>>>> I have also been reading on the specification for well known text[1] >>>>>> and >>>>>> GeoJSON[2] and have been trying to figure out if implementing one of >>>>>> them >>>>>> would suffice (if so which one) or if both needs to be implemented. If >>>>>> both >>>>>> needs to be implemented we should decide which needs to be implemented >>>>>> first. I was thinking of going for GeoJSON as it seems to have a wider >>>>>> usage. >>>>>> >>>>>> Any suggestions on how I should proceed with the project would be >>>>>> highly >>>>>> valued. >>>>>> >>>>>> [1] http://docs.opengeospatial.org/is/12-063r5/12-063r5.html >>>>>> [2] https://tools.ietf.org/html/rfc7946 >>>>>> >>>>>> Thank you. >>>>>> >>>>>> Yours sincerely, >>>>>> Riyafa >>>>>> >>>>>> >>>>>> >>>>>> > -- *Regards,* Wail Alkowaileet
