[mapguide-users] vector editing

Paul Spencer pagameba at gmail.com
Fri Mar 30 14:26:37 EDT 2007 

Charles,

we are using this capability in some of our projects now but it is  
not as finished as I had hoped.  It will not be part of MGOS, it will  
only be available commercially as a plugin to an MGOS application  
framework we are developing called Fusion.  I have hopes that the  
Fusion framework will replace the AJAX viewer in MGOS at some point,  
but that is not certain.

Cheers

Paul

On 30-Mar-07, at 10:02 AM, Charles B wrote:

>
> Hi Paul,
>
> This sounds very interesting. Your predictions was to have this  
> ready for
> the new year, is this available right now ?
>
> Is this (or will be) in the MGOS version or then Enterprise version ?
>
> Thanks
>
> Charles
>
>
>
> pagameba wrote:
>>
>> Shailesh,
>>
>> I will try to put together a description of the tools and their
>> capabilities soon.  In the mean time, to satisfy curiosity, here is a
>> quick outline:
>>
>> The editing tools are being built on top of an application framework
>> we are building for MapGuide OS/Enterprise.  This framework is
>> tentatively known as Fusion or MapGuide Fusion.  It uses a modified
>> version of a weblayout resource to define the commands, toolbars, and
>> context menus for an application.  There are some changes to the
>> schema of the weblayout that makes it incompatible with the existing
>> ajax viewer and with Studio, so currently the weblayout has to be
>> created by hand.
>>
>> MapGuide Fusion uses an HTML page and a single javascript include
>> (fusion.js :)) to parse the HTML page and insert functionality based
>> on the ID of HTML elements and associated Commands from the
>> weblayout.  This allows much more flexibility when designing an
>> application (you can put anything anywhere), and separates code from
>> presentation quite nicely.  It also compartmentalizes the code into
>> separate pieces of functionality that interoperate in a standard way
>> to make code easier to write and maintain.
>>
>> This toolkit is brand new, but builds on the experience DM Solutions
>> Group has with building similar toolkits around MapServer.
>>
>> The toolkit itself will likely be an open source project, hopefully
>> merging into the MapGuide OS project and potentially replacing the
>> existing weblayout/ajax viewer component (although there is a lot to
>> be done and to discuss before this becomes a possibility).
>>
>> The editing tools are part of something we are tentatively calling a
>> Light-Weight Edit capability (LWE).  They would be available as an
>> extension to MapGuide Fusion and would include a simple editing
>> application plus the actual widgets that would allow inserting
>> editing into existing applications built on MapGuide Fusion.
>>
>> The editing capabilities include both digitizing (creating new
>> features) and editing existing features in a web-based environment.
>> The tools are seamlessly cross-browser compliant in Internet Explorer
>> 6/7, Firefox 1.5/2 and Safari 2.  I haven't tested in Opera, but I
>> think it will work there too.
>>
>> The tools generally work by creating shadow copies of feature sources
>> to prevent accidents.  There is an undo and automatic recovery
>> capability because deletes and edits are stored in the Library
>> repository rather than the Session - if you close your browser, you
>> have an opportunity to restore when you next connect.
>>
>> The tools work with the currently selected layer (managed by a layer
>> control), and allow you to have multiple edits on multiple layers
>> without saving.  For layers that have a single geometric type, the
>> tool automatically creates the appropriate type of geometry.  For
>> layers that have multiple types, the user is prompted to select from
>> the available types.
>>
>> There is a commit tool that takes existing edits and merges them back
>> into the original feature source.
>>
>> Because we use the Feature Service API, the editing capability is
>> independent of the provider used with the feature source ... but it
>> does have to be a vector feature source of course!
>>
>> For editing capabilities, we have the same basic node/segment editing
>> capabilities that you would find in most vector editing packages:
>>
>> * digitize/edit points, lines and polygons
>> * select a node and drag to move
>> * select a line segment (two nodes) and drag to move
>> * shift-select to add nodes to the selection
>> * delete nodes (del key)
>> * insert new nodes
>>
>> and probably a few other features that I've forgotten.
>>
>> We are also building an attribute editing grid so that you can edit
>> the attributes of any selected feature (and newly created ones too).
>>
>> Availability: well, much of this is actually already done.  But it
>> needs a few finishing bits and pieces, and substantial testing.  My
>> current plan is to have this ready for the new year.
>>
>> Um ... seems like I've written a pretty good description ;)
>>
>> Cheers
>>
>> Paul
>>
>>
>> On 28-Oct-06, at 4:24 AM, shailesh wrote:
>>
>>> I don't think even mapguide Enterprise has any of these capabilites
>>> either. Any one at autodesk following up this please confirm.
>>> Paul can you publish / post the capabilities of the tool/s DM is
>>> developing ?
>>> Eager to understand upto what extent can we go, while proposing
>>> architecture to our clients using mapguide applications and have
>>> very few requirements in terms of editing maps.
>>>
>>>
>>>
>>> -Regards
>>> Shailesh
>>> ----- Original Message -----
>>> From: Paul Spencer <pspencer at dmsolutions.ca>
>>> To: <users at mapguide.osgeo.org>
>>> Cc:
>>> Date: Saturday, October 28 2006 12:10 AM
>>> Subject: Re: [mapguide-users] vector editing
>>> Chris,
>>>
>>> it is possible, but there are currently no tools in the open source
>>> package that allow you access to this functionality.
>>>
>>> MapGuide Enterprise may contain some of this functionality, but I'm
>>> not sure.
>>>
>>> DM Solutions Group is working on building some of these types of
>>> tools as a commercial capability on top of MapGuide OS/Enterprise.
>>> Contact me directly if you are interested in this.
>>>
>>> Cheers
>>>
>>> Paul
>>>
>>> On 27-Oct-06, at 11:46 AM, Chris Stewart wrote:
>>>
>>>> Hello
>>>>
>>>> Could someone tell me if it is currently possible to create a web
>>>> application that enables a client to remotely edit vector data for
>>>> their
>>>> own purposes - as opposed to just being able to view data, zoom
>>> in and
>>>> out and create buffers - using MapGuide Open Source, together with
>>>> either MapGuide Web Studio or Autodesk MapGuide Studio.
>>>>
>>>> Many thanks
>>>>
>>>> Chris
>>>>
>>>>
>>>>
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>>>
>>> +-----------------------------------------------------------------+
>>> |Paul Spencer pspencer at dmsolutions.ca |
>>> +-----------------------------------------------------------------+
>>> |Chief Technology Officer |
>>> |DM Solutions Group Inc http://www.dmsolutions.ca/ |
>>> +-----------------------------------------------------------------+
>>>
>>>
>>>
>>>
>>>
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>>
>> +-----------------------------------------------------------------+
>> |Paul Spencer                          pspencer at dmsolutions.ca    |
>> +-----------------------------------------------------------------+
>> |Chief Technology Officer                                         |
>> |DM Solutions Group Inc                http://www.dmsolutions.ca/ |
>> +-----------------------------------------------------------------+
>>
>>
>>
>>
>>
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>>
>
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+-----------------------------------------------------------------+
|Paul Spencer                          pspencer at dmsolutions.ca    |
+-----------------------------------------------------------------+
|Chief Technology Officer                                         |
|DM Solutions Group Inc                http://www.dmsolutions.ca/ |
+-----------------------------------------------------------------+

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