[gdal-dev] GSoC 2014

[Михаил Гусев]

Hello everyone.

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.


*Overall idea*

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.


*Target scope for GSoC 2014*

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.

Planned features of the new driver:

1. Reading/writing data from/to the source, creating layers, editing
attributes, etc (as any new OGR driver must provide);

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:

- Read/Write the information about the whole network (network metadata);

- Edit special network objects parameters such as blocking state, or
direction of the flow;

- Import objects from the external sources (the driver adds missing network
parameters to them);

- Set/unset connections among network objects;

- Edit the sets of the network rules.

3. Each object in the network will have a set of relations with other
objects, which are stored separately and form a network graph;

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).


*Current status*

https://github.com/MikhanGusev/gnm

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:

1. Complete. The driver and most of the required virtual interfaces are
already implemented;

2. Complete. All data from the external source is wrapped with the network
proxy and the user can edit it.

3. Currently, I'm thinking about the way, how the network graph will be
stored.


Best regards,

Mikhail Gusev.
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