A Proposal of a Mathematical Roadmap for Scilab DRAFT - Projects

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FeaturesAdvancedClassicsBasics0% 100% UsersFigure 3: The uses of Scilab compared to the features.softwares. The author compares various simple and complex problems and how theycan be approached in various languages. This work is done in the context of theNumerical Mathematical Consortium. The analysis addresses some incompatibilityissues within languages and their impact. This work is continued by Alan Edelmanand presented in ”Open Source and Traditional Technical Computing” by AlanEdelman [20].1.7 What not to doSymbolic computations were perceived as being out of the scope of Scilab, whichfocuses mainly on numerical computations. Whether this choice should remain inthe next years is subject to discussion.TODO : finish that section.1.8 Users and featuresThe figure 3 presents a rather abstract view of users compared the features of Scilab.Obviously, all users make use of the algebra of matrices, may be without even noticingit. Indeed, many expression in Scilab, such as a*b for example, are involvingmatrices. Hence, it is not technically possible to remove the linear algebra featuresof Scilab, because they are at the core of the design of the language. By contrast,not all users are interested by signal processing or by XCos.What features would users want in the coming years and for what use cases ?Anyone willing to share his comments is invited to contact the authors of this report.10
1.9 Methodology used in this documentFor each mathematical problem, we analyze the following points :• what is the current state of Scilab ?• what features are to provide ?• why it fits in Scilab scope ?• is there existing library to connect to Scilab ?• is there a Scilab toolbox providing the feature ?• does Matlab provide an equivalent feature ?Detailed feature requests should be written as ”Scilab Enhancement Proposals”and not in this document.When a library is suggested for connection, we pay attention to at least thefollowing points :• licence : is the license authorizes the inclusion in Scilab ?• language : is the language compatible with Scilab ?• mathematical algorithms : is the algorithm efficient, robust, fast, up-to-date ?• documentation : is the library correctly documented with respect to Scilabrequirements ?• tests : is the library tested ?2 Overview of ScilabIn this section, we try to make a complete overview of Scilab. The goal of thissection is to give a brief description of all the computational features of Scilab andto emphasize the main design choices and the main issues.We separate three levels of features in Scilab, each associated with a set offunctions.• Basics: the features used by all users,• Classics in numerical analysis: the features used by many users.• Advanced methods: the features used by some users, but obviously not all.For each set of functions, we make a brief overview of:• the computational features in this set,• the libraries which supports the features,• the strong points of Scilab in this set,11
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A Proposal of a Mathematical Roadmap for Scilab DRAFT - Projects

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