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MS-DOS Version SV4

Constituent Programs and Free Downloads

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Features of NewMDSX V4.0

Features of NewMDSX include:

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Organised entirely within the Windows™environment;

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All of the original DOS programs have been modified:
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some rarely used programs have been removed from the library (but are still available in the MS-DOS version);

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some new popular programs have been added;

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all programs have been given a substantial graphical component;

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data input and conversion have been simplified and systematised, and made maximally compatible with other MDS programs.

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Several programs are designed for direct data input and analysis, rather than via measures of dis/similarity. These include:
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Dominance pair-comparisons (MDPREF)

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Rankings/Ratings (MINI-RSA and MDPREF)

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Triadic data (TRISOSCAL, unique to NewMDSX)

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Free-sorting data (MDSORT)

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Constituent programs also include models which are similar to MDS (and often used in conjunction with it), such as Principal Components, Hierarchical Clustering and Conjoint Analysis

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DATA INPUT Input wizard, containing default values and Input matrix routine, gives tabbed screen display for input and output results allowing easy switching between the two. Fully text-editable windows.

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Data-matrix entry directly, inputting existing file, pasting from the clipboard and re-opening recently used file.

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Data-entry option to create one or more measures of dis/similarity (via WOMBATS utility - Work Out Measures Before Attempting To Scale) and save in variety of formats.

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Data for 2-way 1-mode matrix entry can be either a lower-triangle without diagonal, or a full matrix.

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Data matrices are assumed to be in free-format (space separated) but can still be input with a INPUT FORMAT statement for complex data formats.

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Ability to change data-matrix format for easing transfer between programs. This includes transferring between SPSS full-matrix input and NewMDSX  , and since data are often interchanged between interactive PERMAP  (with labelled lower-triangular and diagonal matrix input) and MINISSA, the option is provided for converting data matrix input (in either direction)

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LABELS: Objects (usually stimuli, but where appropriate subjects/dat-sources) can be labelled for use in output and in graphics, either as an instruction in the Runscript, or in the process of data-input. 

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GRAPHICS: Ability to produce 2- and 3-dimensional graphics of configurations, Shepard diagrams etc. which can be saved in bitmap (.bmp) or .jpg  format for later insertion and editing.

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Final configurations can be submitted to a variety of (legitimate) similarity transforms, including: 
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reflection of axes

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orthogonal rotation - left, right; up/down  and incremental change in each axis , together with 

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Zoom in/out (uniform rescaling) and

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The entire configuration can be moved within the window.

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Each configuration has the fit value (e.g. stress) printed on it.

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For relevant vector models, objects (whether subjects or stimuli) can be represented as vectors from the origin rather than as points.

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After displaying, lines/contours can be drawn in the configuration, and points and regions can be labelled with text.

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Labelled points in output configurations can be shortened in length within the graphic editing procedure, and the size and font of the labels can be changed

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Clicking on an overlapping point will reveal its label

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within HICLUS, the option is given of producing  graphical option in the form of a labelled horizontally defined dendogram

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For high (>=4 dimensions, an Andrews Plot is produced  The Plot produces for each point a curve (which is a Fourier transform with dimensional co-ordinates as parameters), so that points close in high-dimensional space appear as similar wave-forms. 

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NewMDSX COMMAND LANGUAGE: a RunScript is a set of sequential instructions (akin to SPSS syntax) formed in accord with the NewMDSX command language. Each command has a COMMAND component and an operand (or parameters) prefaced by one or more spaces. The operands no longer need to begin at position 16 , and input is assumed to be free-format.

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On the COMPUTE command, the RunScript is executed, but will stop at any line which has syntax errors.

 

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