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

[Scott Parker]

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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