Re: [pmapper-users] Vector Digitizing

[Armin B. <arm...@gm...>]

Brian

the best person to talk to for all kinds of digitizing is Federico Nieri 
(f....@co...). He was adding all the nice new 
functionalities to the measurement  (which is just another type of 
digitizing). I don't know exactly if he has some more plans in that 
direction.

Personally I don't need more than simple measurements, so I'm not going 
to work very much on that. But I could help integrate new functions into 
the core code. I'm currently still working on a way to easier integrate 
new functionality via plugins.

I still see some problems for more than just point digitizing. Typically 
you will need topology checks, like the current check for overlapping 
sides, but even more complicated ones. And things like snapping & moving 
of vertices, etc. Otherwise how would it be possible to create 2 
adjacent polygons, or 2 connected lines, modify existing borders between 
2 polygons, and so forth? It's maybe possible to have that done via pure 
Javascript/DHTML, without a Java applet, but it's for sure a bit tricky.

And I would not really recommend working on shapefiles, just PostGis (or 
other DB like Oracle, Mysql) or transactional WFS. On shapefiles you 
will sooner or later run into problems with corrupted files because of 
concurrent editing.

If there is more interest for this we can use the development mailing 
list of p.mapper for it, it's currently not active.

armin

Brian May wrote:
> Pmapper is great and has a lot of solid features. However, the big thing 
> my clients need is vector digitizing. I see on your website you 
> mentioned adding digitizing and you have building blocks in the code. 
> Could you share where you are in the process and what features you plan 
> to support?
> 
> Functionality:
> Create custom points (already there), lines, and polygons. Change color 
> and line thickness. Edit and delete features. Save features to user's 
> own database of some sort, i.e. save to a user's own shapefile or 
> postgis table. Add and edit attributes. Essentially create and manage 
> GIS features. The need is for adding different kinds of graphics to a 
> map just for presentation purposes, but also build simple GIS databases 
> in a web environment. There is a huge need for this accross a wide range 
> of organizations. I think you would greatly raise pmapper's profile and 
> help a lot of people out by having these functions.
> 
> How can I (and others interested) help make this a reality? 
> Documentation, coding, testing, vetting out features. etc? What's the 
> best forum to communicate?
> 
> Thanks
> Brian
> 
> 
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