[postgis-users] RE: zigGIS Usage Experiences

Tue Nov 28 12:45:53 PST 2006

I agree.  And I even initially went down the route of a custom layer.
I think it fell short right about when I started exploring editing
capabilities ... IIRC it's not possible with a custom layer.  I also
explored the OLEDB data source and that had its restrictions somewhere
too.

-Abe

On 11/28/06, joshua.uyehara at syngenta.com <joshua.uyehara at syngenta.com> wrote:
> Of all of the approaches so far, ZigGIS is the conceptually the
> 'cleanest', as it is going the route of a full feature class adapter
> implementation (the custom layer approach), but it also requires the
> greatest amount of work, as you have to eventually implement the
> functionality exposed by about a dozen interfaces.
>
> pgArc is great for single users, but you run into problems when you need
> concurrent access, or relationships with other tables in your database.
> The same problems would plague the toolbox approach (which I assume
> would basically be a front-end to shp2pgsql and pgsql2shp).
>
> That's not to say that the pgArc or toolbox approaches aren't worth
> pursuing.  They can probably meet some specific needs much faster than
> ZigGIS will be able to.
>
> Joshua Uyehara
> joshua.uyehara at syngenta.com
> Office: +1 808 337 1408 ext 34
> Cell: +1 808 346 5185
>
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of
> Bruce Rindahl
> Sent: Tuesday, November 28, 2006 9:34 AM
> To: 'PostGIS Users Discussion'
> Cc: 'Shaun Kolomeitz'; 'Tyler Mitchell'
> Subject: RE: [postgis-users] RE: zigGIS Usage Experiences
>
> General discussion :)
>
> I am using pgArc for my PostGIS/ArcMap connection.  It does both
> read/write with some bugs.  I hope to post the changes to 9.x soon on
> the pgArc site.
>
> There is also another effort at:
> http://datashare.gis.unbc.ca/transhape/
> that uses a different approach.
>
> I looked at zigGIS and passed only because I don't program in C#.
>
> Finally, Would there be any interest in a ArcToolbox version of
> PostGIS/ArcMap ??  I have done a lot of work on toolboxes and think I
> could get a proof of concept going pretty soon.  Advantages would be
> Python as a scripting language, the GUI is drag and drop and the tools
> could be modular (One for read, one for append, one for update, etc).
> No compiling would be necessary and the scripts could be used in Model
> Builder.  Comments??
>
> Bruce Rindahl
>
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of
> Paolo Corti
> Sent: Tuesday, November 28, 2006 12:02 PM
> To: postgis-users at postgis.refractions.net
> Subject: Re: [postgis-users] RE: zigGIS Usage Experiences
>
>
> Yes Abe
> I have seen your 3ed at support.esri.com no one seemed to help you I am
> sorry
>
> Have you checked out these 3 alternatives at ArcObjects help (under
> extending arcobjects)?
> 1) Custom Layers
> 2) Plug in data sources
> 3) OGIS compliant OLE DB providers
>
> Plug in is not applicable (it is read only), but the other 2 are viable
> Custom Layers also from .NET I was investigating if also OGIS OLE DB
> could be developed in .NET (in the Help is written only VC++ realistic
> for implementation, but maybe this comment is obsolete now)
>
> in any case,
> congratulations for your great job, even if ZigGis do not write ;-)
>
> Paolo
>
>
>
> Abe Gillespie wrote:
> >
> > Sorry, zigGIS does not write.  That, of course, is the "Holy Grail" of
>
> > these efforts.
> >
> > -Abe
> >
> > On 11/28/06, Paolo Corti <pcorti at gmail.com> wrote:
> >>
> >> Hello Joshua
> >> and thanks for the workaround, I will test it as ASAP It is very
> >> possibly that we could join to make some modification at ZigGis, as
> >> far as I would like in my spare time to write a connector for PostGis
>
> >> for ArcMap.
> >> First I was looking at PgArc (I also migrated that at ArcObjects 9),
> >> but I think the best approach is like ZigGis does, without a proxy
> >> shapefile, but directly reading the data.
> >> I have one more question, before going on.
> >> In this mailing list it was claimed, I think just from Abe, that
> >> ZigGis can read and also WRITE PostGis data. Is this correct? Because
>
> >> from what you are writing seems that ZigGis can just read and not
> >> write, and maybe I could be not interested in continuing using
> >> ZigGis.
> >> In fact I have decided to write in my spare time a full Read/Write
> >> PostGis connector for ArcMap. But before doing that I would like to
> >> deeply investigate if ZigGis already does the job.
> >>
> >> Best regards
> >> Paolo Corti
> >> http://www.paolocorti.net
> >>
> >>
> >> joshua.uyehara wrote:
> >> >
> >> > Hey Paolo,
> >> >
> >> > Abe isn't working on it anymore, but I have been occasionally
> >> > plugging away at it myself.  The problem with adding the layer in
> >> > ArcMap is due to a minor bug.
> >> >
> >> > ZigGIS pulls the geometry column data from PostGIS in its native
> >> > binary format and passes it to ArcMap.  Unfortunately, PostGIS'
> >> > internal
> >> binary
> >> > format is not identical to the expected wkb format, so ArcMap
> >> > silently ignores it and basically treats the table as a
> >> > feature-less object class.
> >> >
> >> > One quick workaround is to create a view of the table that converts
>
> >> > the geometry column with asbinary(), and then manually add the
> >> > necessary entry to the geometry_columns table.
> >> >
> >> > E.g.,
> >> >
> >> > CREATE VIEW geom_table_view AS SELECT asbinary(geom_column) as
> >> > geom_column, column2, column3, FROM geom_table; INSERT INTO
> >> > geometry_columns (f_table_schema, f_table_name, f_geometry_column,
> >> > coord_dimension, srid, type) VALUES
> >> >       ('public', 'geom_table_view', 'geom_column', 2, -1,
> >> > 'MULTIPOLYGON');
> >> >
> >> > Change schema, table, column names, srid, etc. to match your table,
> >> then
> >> > specify the view as the table to be opened with ZigGIS.  It's an
> >> > ugly kludge, but I haven't had the time to fix the problem in
> >> > ZigGIS itself yet.
> >> >
> >> > Many of the feature class functionality hasn't been implemented
> >> > yet, so you can't do much besides display the features.  I'm
> >> > planning to add features to ZigGIS as I need them for work, but I
> >> > can't give you any timelines on it, as I'm swamped with other stuff
> at the moment.
> >> >
> >> > Hope that helped,
> >> > Joshua Uyehara
> >> > joshua.uyehara at syngenta.com
> >> >
> >> > -----Original Message-----
> >> > From: postgis-users-bounces at postgis.refractions.net
> >> > [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of
>
> >> > Paolo Corti
> >> > Sent: Monday, November 27, 2006 6:46 AM
> >> > To: postgis-users at postgis.refractions.net
> >> > Subject: Re: [postgis-users] zigGIS Usage Experiences
> >> >
> >> >
> >> > Hello Abe
> >> >
> >> > you made a great job with your ZigGis! The ArcObjects code is
> amazing!
> >> >
> >> > maybe you can give me a help
> >> > I compiled your code for using it with ArcGis 9 (i made some little
>
> >> > modifications at the code to get this) and .NET 2.0 It compiled
> >> > fine, but when I start ArcMap and I add a PostGIS layer, it adds
> >> > the layer on the TOC but nothing is showed/drawed on the map.
> >> > Looks like geometries are not read from the shape column.
> >> > I am wondering if you are still on this project, and maybe you
> >> > could give me some help, or if I am on my own and must deeply
> >> > investigate/debug myself the code in order to find what is not
> >> > going properly
> >> >
> >> > best regards
> >> > Paolo Corti
> >> > GIS Developer
> >> > http://www.paolocorti.net
> >> >
> >> >
> >> > Abe Gillespie wrote:
> >> >>
> >> >> Sorry for the cross post, but the zigGIS list only has 9
> >> >> subscribers with a ton more downloads than that.
> >> >>
> >> >> I'm curious about any experiences people are having using or even
> >> >> *trying* to use zigGIS.  Is it working?  Anyone need any help?
> >> >> Any constructive criticism?  ... I haven't heard a peep yet.
> >> >>
> >> >> Thanks.
> >> >> -Abe
> >> >> _______________________________________________
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> >> >>
> >> >>
> >> >
> >> > --
> >> > View this message in context:
> >> > http://www.nabble.com/zigGIS-Usage-Experiences-tf696976.html#a75632
> >> > 76 Sent from the PostGIS - User mailing list archive at Nabble.com.
> >> >
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> >> >
> >>
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