Free modeling software for linux

QML (Quantity Modeling Language) is a "thing"-based language for scientific and mathematical data modeling.
Each "thing" is a quantity which may be associated with either a structure or physical phenomena.
Quantities, in turn, may hold other Quantities or values (numbers or strings). Higher-level data models, which associate or define meanings to various quantities (such as velocity or position), can be built from QML quantities.
The higher-level data model (XML) schema that inherits from QML may be understood, and its instance documents may be parsed into QML documents and objects by the QMLReader.
Enhancements:
- This release adds partial Xerces2 DOM support, and works with Java 1.4 and Java 1.5 (no JAXP DocumentBuilder/Factory support currently).
- The test procedure is a little less chatty.
- Support has been added for testing either/both Crimson/Xerces DOM support.
- (Note: Crimson support only works with Java 1.4, as Java 1.5 interfaces have DOM lvl 2 and 3, which crimson doesnt support).
- This release adds compilerargs, and better build support for different configurations to build.xml.

The Generic Eclipse Modeling System (GEMS) is a MDD tool for Eclipse that allows for the rapid development of Draw2D plugins.
Developers specify the rules for a domain language using a metamodel and the tool generates a diagram editor plugin that enforces the rules from the metamodel.
Interpreters can then be written to traverse the model and generate code, perform analyses, or execute the model.
Whats New in 2.0.5_01 Stable Release:
- This release contains fixes to minor bugs present in 2.0.5.

Config::Model::WarpedThing is a base class for warped classes.

SYNOPSIS

use base qw/Config::Model::WarpedThing/ ;

This class must be inherited by all classes that can be warped by Config::Model::Value. This class provides a set of methods that are expected by a warp master from a warped class.

Currently this class is inherited by Config::Model::Value, Config::Model::AnyId and Config::Model::WarpedNode.

WarpThing does not provide a constructor.

Config::Model provides a framework to help in validating the semantic content of configuration data. The project can also be used to provide a semantic check of options of a complex program like mplayer or transcode.
For most complex software, configuration upgrade is a difficult task for most people. By using Config::Model, a software can provide a smooth upgrade path for their users.
How does this work ?
Using this project, a typical configuration validation tool will be made of 3 parts :
The user interface
The validation engine which is in charge of validating all the configuration information provided by the user.
The storage facility that store the configuration information
Dont we already have some configuration validation tools ?
Youre probably thinking of tools like webmin. Yes, these tools exist and work fine, but they have their set of drawbacks.
Usually, the validation of configuration data is done with a script which performs semantic validation and often ends up being quite complex (e.g. 2500 lines for Debians xserver-xorg.config script which handles xorg.conf file).
In most cases, the configuration model is expressed in instructions (whatever programming language is used) and interspersed with a lot of processing to handle the actual configuration data.
Whats the advantage of this project ?
The Config::Model projects provide a way to get a validation engine where the configuration model is completely separated from the actual processing instruction.
The configuration model is expressed in a declarative form (i.e. a Perl data structure) which is always easier to maintain than a lot of code.
The declaration specifies:
the structure of the configuration data (which can be queried by generic user interfaces)
the properties of each element (boundaries, check, integer or string, enum like type ...)
the default values of parameters (if any)
mandatory parameters
the targeted audience (intermediate, advance, master)
on-line help (for ach parameter or value of parameter)
the level of expertise of each parameter (to hide expert parameters from newbie eyes)
So, in the end:
maintenance and evolution of the configuration content is easier
user will see a *common* interface for *all* programs using this project.
user will not see advanced parameters
upgrade of configuration data is easier and sanity check is performed
audit of configuration is possible to check what was modified by the user compated to default values
What about the user interface ?
Config::Model will also come with a Curses::UI interface that queries the users model and generate the relevant user screens.
What about data storage ?
Since the syntax of configuration files vary wildly form one program to another, most people who want to use this framework will have to provide a dedicated parser/writer.
Nevertheless, this project can also provide a writer/parser for most common format: like ini style file, or provide an interface to the Elektra or debconf projects. This point is open for discussion.
It is entirely possible for a single configuration model to use several parsers and writers so one model will ensure the consistency of several configuration files together.
Enhancements:
- The Xorg model was updated to Config::model version 0.609.
- Some bugs were fixed.

GO::Model::Term is a term or concept in an ontology.

SYNOPSIS

# From a file
use GO::Parser;
my $parser = new GO::Parser({handler=>obj}); # create parser object
$parser->parse("gene_ontology.obo"); # parse file -> objects
my $graph = $parser->handler->graph; # get L object
my $term = $graph->get_term("GO:0001303"); # fetch a term by ID
printf "Term %s %sn", $term->name, $term->acc;

# From a GO Database (requires go-db-perl)
my apph = GO::AppHandle->connect(-dbname=>$dbname);
my $term = $apph->get_term({acc=>00003677});
printf "Term:%s (%s)nDefinition:%snSynonyms:%sn",
$term->name,
$term->public_acc,
$term->definition,
join(", ", @{$term->synonym_list});

Represents an Ontology term; the same class is used for process, compartment and function
currently, a Term is not aware of its Relationships; to find out how a term is related to other terms, use the a GO::Model::Graph object, which will give you the GO::Model::Relationship objects; for example

$rels = $graph->get_parent_relationships($term->acc);

Misfit Model 3D is an OpenGL-based 3D model editor that works with triangle-based models. Misfit Model 3D supports multi-level undo, skeletal animations, simple texturing, scripting, command-line batch processing, and a plugin system for adding new model and image filters.
Complete online help is included. It is designed to be easy to use and easy to extend with plugins and scripts.
Misfit Model 3D was written and tested on Linux (2.4 and 2.6 kernels) and has been compiled and tested on most major Linux distributions.
It is not endian-safe so it is unlikely to run on non-x86 hardware platforms--this will probably not change soon unless I get requests for a version thats usable on big-endian archs.
Enhancements:
- The menus have been re-organized. There is a new command to make normals face outward. The texture coordinate window now has a rotate tool. Material support for COB has been improved. Many animation bugs have been fixed. A "File | Export" command has been added to indicate which formats have less reliable write support.

OpenEuclide is a geometry software that can produce geometrical figures by adding preformed objects one at a time.

OpenEuclide is an opensource multi-platform 2D geometry software. Figures are defined dynamically by describing formal geometrical constraints. This project is a basic tool for educational or modeling purpose that aims to be extended as far as possible in response to user needs. May it involve users talents in C++ programming.

Supported languages are : English and French.

The goal is now to make a robust, easy to use, totally multiplatform software (no runtime environment needed), featured for education until high school (excluded).

Eclipse project is an open source community whose projects are focused on providing an extensible development platform and application frameworks for building software.

Eclipse provides extensible tools and frameworks that span the software development lifecycle, including support for modeling, language development environments for Java, C/C++ and others, testing and performance, business intelligence, rich client applications and embedded development.

A large, vibrant ecosystem of major technology vendors, innovative start-ups, universities and research institutions and individuals extend, complement and support the Eclipse Platform