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Current Issue (Issue 164)

Thought of the Week:- "The first step to getting the things you want out of life is this: Decide what you want."
VISTA:- http://www.visualstats.org/ Free and Open Source (4.13 MB). Windows, Unix and Mac

Vista is a Visual Statistics System, which can be used to visualize and understand the data. ViSta constructs very-high-interaction, dynamic graphics that show you multiple views of your data simultaneously. The graphics are designed to augment your visual intuition so that you can better understand your data. ViSta has a Structured Graphical Interface that includes

WorkMaps - that visually summarize your data analysis session.

SpreadPlots - a spreadsheet-like arrangement of linked, dynamic, interactive plots that show you what your data or analysis seems to say.

GuideMaps - that guide your analysis.

DataSheets - for inputing and editing your data.

Visual GuideMap Authoring - for teachers who wish to create guidemaps.

Reports - present data statistics and analysis results in the classical way.

Context-Sensitive Help and Web-based Help and Notes.

ViSta performs Univariate and Multivariate Statistical Visualization and Data Analysis. It also provides developing tools and languages so that one can write Applets, Scripts, DataPrograms and plugins. One can also combine the spreadsheet power of Excel with the visualization and analysis power of ViSta to increase your understanding of your data. After installation, Vista can be accessed through MS-Excel. It also allows data to have missing values, and can report and visualize such data. The main ViSta module includes these four commonly used analysis methods:

Univariate Tests: T-tests, z-tests, Mann-Whitney, Wilcoxon.

ANOVA: One-way to N-way Anova with/without 2-way interactions of balanced or unbalanced complete data.

Regression: Simple and Multiple Regression using OLS, Robust or Monotone fitting methods.

Frequency Table Analysis: Chi-Square, Phi Coefficient, Contingency Coefficient, CMH.

Also using plugins, one can do Log-Linear Analysis; Multivariate Analysis like Multivariate Regression, Cluster Analysis, Principal Component Analysis and Correspondence Analysis; Homogeneity Analysis; and MultiLevel Modeling.


Site of the Week:- http://www.iosn.net/

The International Open Source Network (IOSN) is a Center of Excellence for FOSS in the Asia-Pacific Region. It shapes its activities around Free/Open Source Software (FOSS) technologies and applications. Via a small secretariat, the IOSN is tasked specifically to facilitate and network FOSS advocates and human resources in the region. The vision is that developing countries in the Asia-Pacific Region can achieve rapid and sustained economic and social development by using affordable yet effective FOSS ICT solutions to bridge the digital divide. IOSN is an initiative of the Asia-Pacific Information Development Programme (APDIP), which has been supporting the strategic and effective use of Information Communication Technology (ICT) for poverty alleviation and sustainable human development in the Asia-Pacific region since 1997. The site offers FOSS resources categorized by the country, News items, Events, Organizations and other articles. The site also gives the details of localization effort like developing/developed s/w in various Indian languages, Training Materials, Documentation, Tutorials, FOSS in Education, FOSS and Government etc.

That's all for this week. See you next week.

Madhuresh Singhal