[Qgis-developer] dot density plugin (anyone used eLance to funddevelopment?)

[John Abraham]

Dynamic sliders would require the plugin to draw the points, not just build a new shape file. Which would be even better. It would be great if we could have a symbology plugin (like the Diagram plugin.)  

But I was imagining something much simpler, that just constructs a new layer of points. 

For those that don't know, Elance is a fairly simple system to hire freelance people. I've used it a few of times for django projects and LaTex stuff. 

--
John Abraham

Sent from my iPhone, please excuse any typos. 

On 2012-01-31, at 6:08 PM, "Scott Parker" <jscottparker at comcast.net> wrote:

> If the calculation is fast enough there could be a dynamic slider for points
> per dot.
> 
> Another place where this would be useful is stream definition from a flow
> accumulation raster.
> 
> Scott
> 
> -----Original Message-----
> From: qgis-developer-bounces at lists.osgeo.org
> [mailto:qgis-developer-bounces at lists.osgeo.org] On Behalf Of John Abraham
> Sent: Tuesday, January 31, 2012 4:40 PM
> To: qgis-developer at lists.osgeo.org
> Subject: [Qgis-developer] dot density plugin (anyone used eLance to
> funddevelopment?)
> 
> Hi everyone.
> 
> I want to build a better dot-density map plugin.  The one that is included
> in the "Vector->Research Tools->Random Points" is a bit clumsy because: 
> 
> a) you already need to have a field describing the number of points, and a
> lot of the time I want to try 1dot=100 and 1dot=500 and 1dot=1000 in an
> interactive way to see what looks better, and not have to go into the
> attributes (or PostGIS) to try different numbers, and
> 
> b) usually I want to have several fields shown at once (blue dots for
> households and green dots for jobs, or different shades of blue for data
> from different years)
> 
> c) sometimes I want to show negative numbers too, in a different color (1
> red dot = 100 less jobs, 1 blue dot = 100 more jobs)
> 
> It's probably a pretty easy python plugin to develop, simply build a new
> layer with random dots generated from several fields, each dot with a single
> attribute being the field it was generated from. And a user dialog to select
> the field and the (positive or negative) ratio of dots per field value.
> The color coding can be done by the user afterwards, in the new layer. 
> 
> I don't think I can write this myself or in-house right now since I'm more
> of a Java programmer and our best python programmer is swamped.  I'm
> thinking of outsourcing it to eLance.com, since QGIS.ORG cannot accept
> earmarked donations.  What do you guys think?  Or should I just file a
> feature request in the bug tracking system and hope for the best?
> 
> --
> John Abraham
> jea at hbaspecto.com_______________________________________________
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