Thanks ChenLiang Wang for your interest. I would repeat Ivan's welcome to you, and I look forward to your contributions in the area of GIS.
To answer your questions: 1. Yes, it is possible to call PostGIS functions from MADlib. 2. Yes, spatial statistics are suitable for MADlib. For documentation, please refer to the Apache MADlib wiki http://madlib.incubator.apache.org/ which includes: Quick Start Guides Get going with a minimum of fuss. - Installation Guide <https://cwiki.apache.org/confluence/display/MADLIB/Installation+Guide> - Quick Start Guide for Users <https://cwiki.apache.org/confluence/display/MADLIB/Quick+Start+Guide+for+Users> - Quick Start Guide for Developers <https://cwiki.apache.org/confluence/display/MADLIB/Quick+Start+Guide+for+Developers> As Ivan mentioned, writing down the functions you would like to build and the interface is a good place to begin. Then we can discuss on the open mailing list. Regards, Frank On Thu, Dec 17, 2015 at 8:11 PM, 王晨 亮 <hi181904...@msn.com> wrote: > Thanks for your quick reply. Your suggestion is great. I will give a > definitions and description for the spatial statistic functions and > comparison with ordinary statistic models. > > > > Date: Thu, 17 Dec 2015 21:56:06 -0500 > > Subject: Re: How to contribute a spatial module to MADlib manipulating > objects from PostGIS > > From: inov...@pivotal.io > > To: dev@madlib.incubator.apache.org > > > > Hi ChenLiang, > > > > I think your proposal is good and worth trying to do it! > > > > Can I suggest the first steps if you send a proposal of the function > > definitions and the parameters and return values as well as description > of > > the functions and what they do. > > > > Based on that we can discuss the design of the interface and once it > looks > > good you can start working on the actual implementation of the coding. > > When you get to implementation we can help you on technical challenges. > > > > Cheers, > > Ivan > > > > > > > > > > > > On Thu, Dec 17, 2015 at 9:50 PM, 王晨 亮 <hi181904...@msn.com> wrote: > > > > > Hi MADlib Developers, > > > > > > > > > > > > > > > I am a GIS Researcher and have some knowledge on PostGIS, Python, > > > C/C++,Java and R. > > > > > > > > > > > > I have learned some spatial statistical models during My PhD research > in > > > GIS. Recently, I have done a job translating GWR (Geographical Weighted > > > Regression) from R into Java for my company. And I would like to > > > contribute to MADLib if possible. I believe PostGIS and MADlib are the > > > most powerful extensions of PostgreSQL . Therefore, a spatial > statistical > > > module connecting the two libraries could be significant . If I can > start > > > the task , the first goal to implement will be GWR model. > > > > > > > > > > > > Now I am reading the developer guide of MADlib. I not quite sure how to > > > contribute a geospatial module to MADlib. Is it possible to manipulate > > > spatial object or attribute from PostGIS in MADlib ? > > > > > > > > > > > > So could anyone suggest a few pointers & links that I can follow to get > > > to know: > > > > > > > > > > > > 1. how to deal with these dependencies about MADlib? > > > > > > > > > > > > 2. whether the spatial statistics module is suitable for MADlib？ > > > > > > > > > > > > Thank you in advance. > > > > > > > > > ChenLiang Wang > > > > > > > >
