Re: [Pytables-users] Some method like a table.readWhereSorted
Hi Anthony Thanks for adding this issue. Is there a way to use CS indexes to get the row coordinates satisfying a simple condition sorted by the column in the condition? I would like to avoid using numpy.sort() since the sorting order is probably already available within the index information. My condition is simply (timestamp = %d) (timestamp = %d) % (ts1, ts2) If you could please give me some guidelines so that I could put together such a method, that would be great. Julio (like using getWhereList()), but using an index to get the coordinate list ordered by column indexes to get the coordinates ? I nhas a *sort*parameter that uses numpy.sort() to do the work, and that readSorted() uses a full index to get the sorted sequence. I couldn't make complete sense yet of chunkmaps being passed to numexpr evaluator inside _where(). On Thu, Apr 11, 2013 at 1:14 PM, Anthony Scopatz scop...@gmail.com wrote: Thanks for bringing this up, Julio. Hmm I don't think that this exists currently, but since there are readWhere() and readSorted() it shouldn't be too hard to implement. I have opened issue #225 to this effect. Pull requests welcome! https://github.com/PyTables/PyTables/issues/225 Be Well Anthony On Wed, Apr 10, 2013 at 1:02 PM, Dr. Louis Wicker louis.wic...@noaa.govwrote: I am also interested in the this capability, if it exists in some way... Lou On Apr 10, 2013, at 12:35 PM, Julio Trevisan juliotrevi...@gmail.com wrote: Hi, Is there a way that I could have the ability of readWhere (i.e., specify condition, and fast result) but also using a CSIndex so that the rows come sorted in a particular order? I checked readSorted() but it is iterative and does not allow to specify a condition. Julio -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users | Dr. Louis J. Wicker | NSSL/WRDD Rm 4366 | National Weather Center | 120 David L. Boren Boulevard, Norman, OK 73072 | | E-mail: louis.wic...@noaa.gov | HTTP:http://www.nssl.noaa.gov/~lwicker | Phone:(405) 325-6340 | Fax:(405) 325-6780 | | I For every complex problem, there is a solution that is simple, | neat, and wrong. | | -- H. L. Mencken | | The contents of this message are mine personally and | do not reflect any position of the Government or NOAA. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
Re: [Pytables-users] Some method like a table.readWhereSorted
Thanks for bringing this up, Julio. Hmm I don't think that this exists currently, but since there are readWhere() and readSorted() it shouldn't be too hard to implement. I have opened issue #225 to this effect. Pull requests welcome! https://github.com/PyTables/PyTables/issues/225 Be Well Anthony On Wed, Apr 10, 2013 at 1:02 PM, Dr. Louis Wicker louis.wic...@noaa.govwrote: I am also interested in the this capability, if it exists in some way... Lou On Apr 10, 2013, at 12:35 PM, Julio Trevisan juliotrevi...@gmail.com wrote: Hi, Is there a way that I could have the ability of readWhere (i.e., specify condition, and fast result) but also using a CSIndex so that the rows come sorted in a particular order? I checked readSorted() but it is iterative and does not allow to specify a condition. Julio -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users | Dr. Louis J. Wicker | NSSL/WRDD Rm 4366 | National Weather Center | 120 David L. Boren Boulevard, Norman, OK 73072 | | E-mail: louis.wic...@noaa.gov | HTTP:http://www.nssl.noaa.gov/~lwicker | Phone:(405) 325-6340 | Fax:(405) 325-6780 | | I For every complex problem, there is a solution that is simple, | neat, and wrong. | | -- H. L. Mencken | | The contents of this message are mine personally and | do not reflect any position of the Government or NOAA. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
[Pytables-users] Some method like a table.readWhereSorted
Hi, Is there a way that I could have the ability of readWhere (i.e., specify condition, and fast result) but also using a CSIndex so that the rows come sorted in a particular order? I checked readSorted() but it is iterative and does not allow to specify a condition. Julio -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
Re: [Pytables-users] Some method like a table.readWhereSorted
I am also interested in the this capability, if it exists in some way... Lou On Apr 10, 2013, at 12:35 PM, Julio Trevisan juliotrevi...@gmail.com wrote: Hi, Is there a way that I could have the ability of readWhere (i.e., specify condition, and fast result) but also using a CSIndex so that the rows come sorted in a particular order? I checked readSorted() but it is iterative and does not allow to specify a condition. Julio -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users | Dr. Louis J. Wicker | NSSL/WRDD Rm 4366 | National Weather Center | 120 David L. Boren Boulevard, Norman, OK 73072 | | E-mail: louis.wic...@noaa.gov | HTTP:http://www.nssl.noaa.gov/~lwicker | Phone:(405) 325-6340 | Fax:(405) 325-6780 | | I For every complex problem, there is a solution that is simple, | neat, and wrong. | | -- H. L. Mencken | | The contents of this message are mine personally and | do not reflect any position of the Government or NOAA. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
