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<div class="moz-cite-prefix">Hi Mikhai,<br>
<br>
Great! Nice to see such interesting to GSoC this year.<br>
<pre class="moz-signature" cols="72">Best regards,
Dmitry</pre>
17.02.2014 14:13, Михаил Гусев пишет:<br>
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<blockquote
cite="mid:CAJB43VqOcp0YM8sFJTmNgq1b9KmYkcHr8YXnq1JrgMf6RoXnjg@mail.gmail.com"
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<p style="margin-bottom:0cm" lang="en-US">Hello everyone.</p>
<p style="margin-bottom:0cm" lang="en-US">I am a last year
student
at Moscow Power Engineering Institute, Russia. For GSoC 2014 I
would
like to work on networking capabilities in GDAL/OGR.</p>
<p style="margin-bottom:0cm" lang="en-US"><u><br>
</u></p>
<p style="margin-bottom:0cm" lang="en-US"><u>Overall idea</u></p>
<p style="margin-bottom:0cm;text-decoration:none" lang="en-US">I
would like to try to implement a universal network model. The
universality of the model would reflect not only in the
ability to
use different GIS formats to store and transfer network data
(which
OGR is a grate basis for), but also to be able to design and
simulate
different types of network applications (engineering, natural,
etc).
I understand that it is rather ambitious to consider all
possible
aspects of all network types. But as a first step I would like
to
cover only the basic aspects, that can be generalized and to
provide
a “platform” which can be used by other developers to create
their own extensions which are specific to the concrete
network type.</p>
<p style="margin-bottom:0cm;text-decoration:none" lang="en-US"><br>
</p>
<p style="margin-bottom:0cm" lang="en-US"><u>Target scope for
GSoC
2014</u></p>
<p style="margin-bottom:0cm" lang="en-US">Today none of OGR
drivers
supports network functionality. The idea is to implement a new
OGR
driver, which will deal with networks built over the spatial
data.
The spatial data together with the network data will be stored
in one
of the OGR-supported formats, which would be specified during
the
creation of the network. </p>
<p style="margin-bottom:0cm" lang="en-US">Planned features of
the
new driver:</p>
<p style="margin-bottom:0cm" lang="en-US"> 1. Reading/writing
data
from/to the source, creating layers, editing attributes, etc
(as any
new OGR driver must provide);</p>
<p style="margin-bottom:0cm" lang="en-US"> 2. The user would
also be
able to do the following, assuming that all the special
network data
is the data of the current GIS-format:</p>
<br>
- Read/Write the
information about the whole network (network metadata);
<p style="margin-bottom:0cm" lang="en-US"> - Edit special
network
objects parameters such as blocking state, or direction of the
flow;</p>
<p style="margin-bottom:0cm" lang="en-US"> - Import objects from
the
external sources (the driver adds missing network parameters
to
them);</p>
<p style="margin-bottom:0cm" lang="en-US"> - Set/unset
connections
among network objects;</p>
<p style="margin-bottom:0cm" lang="en-US"> - Edit the sets of
the
network rules.</p>
<p style="margin-bottom:0cm" lang="en-US"> 3. Each object in the
network will have a set of relations with other objects, which
are
stored separately and form a network graph;</p>
<p style="margin-bottom:0cm" lang="en-US"> 4. The whole network
will
have a set of rules that describes the connection
possibilities of
different object types in the network. The network will also
have a
set of rules that describes the influence of each type of
object to
the state of the whole network and to the other types of
objects. It
can also be called as a behavior of the object in the context
of the
network specialization (engineering purpose).<br>
</p>
<p style="margin-bottom:0cm" lang="en-US"><br>
</p>
<p style="margin-bottom:0cm" lang="en-US"><u>Current status</u></p>
<p style="margin-bottom:0cm;text-decoration:none" lang="en-US"><a
moz-do-not-send="true"
href="https://github.com/MikhanGusev/gnm">https://github.com/MikhanGusev/gnm</a></p>
<p style="margin-bottom:0cm" lang="en-US">As a matter of fact
I've
been working on this for a while, and I've already completed
few
things. Here is what I've accomplished already:</p>
<p style="margin-bottom:0cm" lang="en-US"> 1. Complete. The
driver
and most of the required virtual interfaces are already
implemented<span lang="ru-RU">;</span></p>
<p style="margin-bottom:0cm" lang="en-US"> 2. Complete. All data
from the external source is wrapped with the network proxy and
the
user can edit it.</p>
<p style="margin-bottom:0cm" lang="en-US"> 3. Currently, I'm
thinking about the way, how the network graph will be stored.</p>
<p style="margin-bottom:0cm;text-decoration:none" lang="en-US"><br>
</p>
<p style="margin-bottom:0cm" lang="en-US">Best regards, </p>
<p style="margin-bottom:0cm" lang="en-US">Mikhail Gusev.</p>
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