[postgis-users] Combined Windows version of PostGIS/P-LR
Obe, Regina
robe.dnd at cityofboston.gov
Tue Jun 19 06:06:28 PDT 2007
Unfortunately I'm not in the PL/R newsgroup yet and I don't have Joe's email address, so can someone pass this message along. I'm updating my instruction docs accordingly to reflect this issue and still writing up some followup tutorials.
When testing creating the median function as described in the docs using PgAdmin, I would get parse R errors when using it. After some research (googling - others had the same problem) and refollowing my tracks (since I was able to get it right a couple of times, but not consistently). I discovered it was the line breaks in the function that was causing the problem.
I had to do this
create or replace function r_median(_float8)
returns float as 'median(arg1)' language 'plr';
instead of what is mentioned in the docs - this
create or replace function r_median(_float8) returns float as '
median(arg1)
' language 'plr';
Evidentally R parser chokes when it runs into line breaks.
Hope that helps,
Regina
-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of TECHER David
Sent: Monday, June 18, 2007 6:16 PM
To: mgleahy at alumni.uwaterloo.ca; PostGIS Users Discussion
Subject: Re: [postgis-users] Combined Windows version of PostGIS/P-LR
Mike Leahy a écrit :
> Hey all,
>
> I'm just wondering if this thread should move back to the plr-general
> list. In particular, I think it would be good if Joe is able to add a
> link to the installer on the PL/R web page. I just tried the installer,
> and it works great - nice work David.
>
> I did notice, however, that it claims to be installing PgRouting in the
> welcome screen, and it appears as PgRouting in the Windows uninstall
> list.
Well I did the installer, last Saturday night and I was hurry.
You know when you haven't slept all a night, you don't see errors
thanks.
> Also, I think more than is needed is being added to the Path
> variable. In my case, this is what gets added after the installer is done:
>
> "\;C:\Program Files\R\R-2.5.0\bin;C:\Program
> Files\PostgreSQL\8.2\bin;C:\Program Files\PostgreSQL\8.2\lib"
>
>
I reduced it to
\;C:\Program Files\R\R-2.5.0\bin
> When I had installed PL/R manually, I seemed to be able to get away with
> adding just ";C:\Program Files\R\R-2.5.0\bin".
Yes it is, you're right. But if you use a function like
select load_r_typenames();
pl/r needs to know what it you R_HOME environment variable.
> Also, if I happen to
> re-install PL/R, the entire string above will appear multiple times in
> the Path variable. Is it possible for the installer to check for that?
>
>
I've only been able to detect if R directory is present in PATH variable
for the moment!
Not able to remove it for the moment from a previous install
If you want, my Inno Setup script is available at
http://www.davidgis.fr/download/plr-8.2.0.4-win32-src.zip
If someone is used here to using Inno SetUp, no problem to improve it.
> Regards,
> Mike
>
> TECHER David wrote:
>
>> Hi Regina,
>>
>> Many thanks for these interesting link! Very excellent!
>>
>> I will wait for the next series of your articles!
>>
>> --david;
>>
>> Obe, Regina a écrit :
>>
>>> Since Dave was doing his part, I figured I would help out the cause a
>>> little. R is pretty new to me too but looks like it could be very useful.
>>> I drafted up a quick getting started and included David's link in there.
>>> http://www.bostongis.com/PrinterFriendly.aspx?content_name=postgresql_plr_tut01
>>>
>>> Let me know any parts that seem unclear or where I went wrong. The
>>> steps seemed to work for me.
>>> Thanks,
>>> Regina
>>>
>>> ------------------------------------------------------------------------
>>> *From:* postgis-users-bounces at postgis.refractions.net on behalf of
>>> TECHER David
>>> *Sent:* Sun 6/17/2007 2:53 AM
>>> *To:* PostGIS Users Discussion
>>> *Subject:* Re: [postgis-users] Combined Windows version of PostGIS/P-LR
>>>
>>> Dear Jan,
>>>
>>> I begun to use PL/R. As you know, I'm not a expert in R
>>>
>>> Compiling with PostgreSQL 8.2.4 on win32 ...no problem!
>>>
>>>
>>> These release is available at
>>>
>>> http://www.davidgis.fr/download/plr-8.2.0.4_0_win32.exe
>>>
>>> I've tryed to see here if
>>>
>>> first R 2.5.0 is available on the computer where you want to install it.
>>>
>>> else it stop!
>>>
>>> The installer updates the R_HOME environment variable
>>> and update the PATH in order to adding 'R_HOME'/bin directory
>>>
>>> Let me know if it works for you
>>>
>>> createdb testR
>>>
>>> psql -d testR -f / "path/to/your/postgresql/dir"/share/contrib/plr.sql
>>>
>>> psql testR
>>>
>>> select load_r_modules();
>>>
>>> select * from plr_environ();
>>>
>>> and so on
>>>
>>> --david;
>>>
>>> Jan Hartmann a écrit :
>>>
>>>> I agree. A separate installer for PL/R would be the first thing to
>>>> create. Am I right that that would not be very difficult? After that,
>>>> though, I would very much like to have a *combined* version, with PL/R
>>>> and PostGIS both enabled. I am not sure how difficult that would be,
>>>> but, as I said, it would be a marvelous example of Open Source
>>>> software cooperation. The additional packages Mike mentioned don't
>>>> have to be installed prior to installing PL/R; you can install them in
>>>> the regular way in R (R INSTALL), and an existing PostgreSQL database
>>>> with PL/R will recognise them after a restart.
>>>>
>>>> BTW: deldir was a major reason for me to experimnt with a combined
>>>> version: the power of voronoi diagrams in a PostGIS database!
>>>>
>>>> Jan
>>>>
>>>> Mike Leahy wrote:
>>>>
>>>>> David/Jan:
>>>>>
>>>>> Although PostGIS and PL/R can be complimentary tools, I think a
>>>>>
>>> separate
>>>
>>>>> installer (for now at least) would make the most sense for PL/R. At
>>>>> least that way there is still the option for other users to install
>>>>>
>>> PL/R
>>>
>>>>> without PostGIS, and vice-versa.
>>>>>
>>>>> At the same time, however, I can see how a including PL/R as an option
>>>>> in the PostGIS installer could be useful - particularly if a set of
>>>>> pre-defined functions were included with the setup that made use of
>>>>>
>>> PL/R
>>>
>>>>> for spatial statistical operations within PostGIS. But this might
>>>>>
>>> get a
>>>
>>>>> bit complicated, considering the requirements involved (e.g., having R
>>>>> installed, as well as packages installed in R - such as deldir for
>>>>> making voronoi polygons).
>>>>>
>>>>> Mike
>>>>>
>>>>> TECHER David wrote:
>>>>>
>>>>>> Hi Jan,
>>>>>>
>>>>>> Before I made a mistake, all you want is only a win32-installer for
>>>>>> PL/R?
>>>>>>
>>>>>> because I think you know that's postgis win32-installer already
>>>>>>
>>> exist?
>>>
>>>>>> See http://www.postgis.org/download/windows/
>>>>>>
>>>>>> --david;
>>>>>>
>>>>>>
>>>>>> Jan Hartmann a écrit :
>>>>>>
>>>>>>> Hi folks (sorry for crossposting),
>>>>>>>
>>>>>>> Joe Conway just announced that PL/R will soon be available for
>>>>>>> Windows. See the thread starting at:
>>>>>>>
>>>>>>>
>>>>>>>
>>> http://gborg.postgresql.org/pipermail/plr-general/2007-June/000235.html
>>>
>>>>>>> PL/R is an implementation of the statistical package R within
>>>>>>> PostgreSQL. See:
>>>>>>>
>>>>>>> http://www.joeconway.com/plr/
>>>>>>> http://www.r-project.org <http://www.r-project.org/>
>>>>>>>
>>>>>>> It's installed the same way as postGIS, but until now only a Linux
>>>>>>> version was available. I have them both enabled on my server at SARA
>>>>>>> computing center, and the functionality is unbelievable. My own
>>>>>>> organisation, however, doesn't allow me to install Linux servers,
>>>>>>>
>>> and
>>>
>>>>>>> even if they did, neither staff nor students would be willing or
>>>>>>>
>>> even
>>>
>>>>>>> able to work with them. I guess this is not a unique situation, so
>>>>>>> this Windows port is really important. Moreover, a PostgreSQl
>>>>>>> implementation with full GIS and statistical functionality is
>>>>>>> something that doesn't exist in the commercial world as far as I
>>>>>>>
>>> know.
>>>
>>>>>>> An easy installable Windows version would IMO really be a showpiece
>>>>>>> for Open Source software. I would really appreciate if people in the
>>>>>>> know on both these lists would put their heads together to implement
>>>>>>> this. I don't really know much about Windows installers, but my
>>>>>>> feeling is that it is not enormously difficult.
>>>>>>>
>>>>>>> Regards,
>>>>>>>
>>>>>>> Jan Hartmann
>>>>>>>
>>>>>>> Dr. J. Hartmann
>>>>>>> Department of Geography
>>>>>>> University of Amsterdam
>>>>>>> _______________________________________________
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>>>>>>
>>>>>>
>>>>>>
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