[postgis-users] RE: RE: zigGIS Usage Experiences

Bruce Rindahl rindahl at lrcwe.com
Fri Dec 1 11:08:42 PST 2006 

Is there any way this version could be posted somewhere?  I would also love
to try it.  I do not have access to Visual Studio.
Thanks
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: Friday, December 01, 2006 12:04 PM
To: postgis-users at postgis.refractions.net
Subject: [postgis-users] RE: RE: zigGIS Usage Experiences


Thank you Joshua
now it is working!

with some quick debug i discovered it was a stupid problem with my
international settings.

The funny thing is that now with correcting the regional settings it works
also the previous version i had (the public 8.3 based version - that I
modified to work with 9.0 and from which I removed the circular
reference problem). In this previous version you DON'T NEED to create
the view, so that problem It was already solved but came back in the
version Abe emailed you...

So now I have a working (for ArcGis 9.0 and 9.1) Visual Studio 2005 Solution
of ZigGis, without need creating the view as you suggested.

I am amazed from the speed of ZigGis with reading data (i wouldn't have
thought is so fast, after all we are not reading an ArcGis native geometry),
but I see there are still many things to do (before implementing editing):
for example rendering with symbology is not working, the geometry column
seems to have a problem (is undefined),
....

Who knows why it is not possible editing data, this would be a super tip to
get to know what can be, AFAIK Abe was trying to discover that for more than
one month! I am sure if someone from the Esri Geodatabase team could give us
a little help about this they could give us the right direction for letting
the layer to be edited. I don't think there is a block, we probably need to
implement in the right way the right interface...

in any case thank you for helping me

Best regards
Paolo

Paolo Corti wrote:
> 
> Hi Joshua,
> 
> thank you for emailing me the latest Abe's version.
> What I had it was this: http://gforge2.uwc.ac.za/projects/ziggis
> and it was for 8.3, with a circular reference problem.
> If i knew that there was what you sended me I would have saved 1 day time
> it took me to get what I had compiled with AO 9.0.
> In any case I compiled the project you emailed me with Visual Studio 2005
> (.net 2.0) and ArcObjects 9.0 .net assemblies.
> It compiles fine, but when I add a layer:
> 1) if I just add a working PostGis layer it gives error
> 2) if I add a view (like you suggested) to the Working PostGis layer, it
> seems working, the layer is added at the TOC, but nothing is drawn. If I
> open the attribute table it shows me all the record, but the geometry
> field is empty.
> 
> any idea?
> thanks in advance
> 
> Paolo 
> 
> in fact what I had it was downloaded from SourceForge and it was still
> 
> joshua.uyehara wrote:
>> 
>> Hey Paolo,
>> 
>> I'm using ArcGIS Desktop 9.1.  As Abe mentioned, however, I'm also using
>> a later snapshot of ZigGIS.
>> 
>> I had also gone and updated the publicly available ZigGIS to the 9.0
>> ArcObjects model before receiving the latest version of ZigGIS from Abe,
>> but I never tested that version with the workaround that I outlined.
>> 
>> I'll email you a copy of the latest snapshot from Abe so that you can
>> see if you have any better luck with it.
>> 
>> 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: Wednesday, November 29, 2006 7:21 AM
>> To: postgis-users at postgis.refractions.net
>> Subject: [postgis-users] RE: zigGIS Usage Experiences
>> 
>> 
>> Hello Joshua
>> I tried what you suggested (I also added the GID field in the view, it
>> caused an error).
>> But ZigGis goes in error when is adding layer, specifically at this line
>> of
>> code:
>> 
>> doc.AddLayer(layer);
>> 
>> the error i get is AccessViolationExpection
>> 
>> did you also try using ZigGis with ArcMap 9.0 ?
>> 
>> in any case thank you for helping me, i will investigate more deeply and
>> if i get into some resolution I will drop a note here
>> 
>> best regards
>> Paolo
>> 
>> 
>> 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
>>>> _______________________________________________
>>>> postgis-users mailing list
>>>> postgis-users at postgis.refractions.net
>>>> http://postgis.refractions.net/mailman/listinfo/postgis-users
>>>> 
>>>> 
>>> 
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>> 
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> 
> 

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