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Locus

Another exclusive Foundation RISCWorld application

Introduction

Locus is a mathematical graph plotter and data analysis tool written to provide ease of use with sophistication. It is sophisticated enough for use with 'A' level and post 'A' level students and straightforward enough to be used at late primary or early secondary level.

It has the following features:

• Formula based graph plotting in five operational modes:
  
  
  • Cartesian (non-parametric)
    
  • Polar (non-parametric)
    
  • Cartesian (parametric)
    
  • Polar (parametric)
    
  • Implicit
  
  
• The user can watch the graph being plotted. This is very useful and educationally important. It is also rare among desktop graph plotters.
  
• Formulae can be entered in standard algebraic notation.
  
• Functions can be input in user defined function notation.
  
• Constants can be used
  
• 'Families' of graphs can be plotted
  
• Commonly used functions in each of the five modes can be saved and edited.
  
• You can choose fully automatic axis scaling or have complete manual control.
  
• It features a drag box zoom and an automated zoom out facility.
  
• The graph can be moved up, down, right and left as required.
  
• It can analyse gradients of functions and areas under graphs and draw gradient and integral functions.
  
• Bi-variate data sets in Text, CSV or SID formats can be imported
  
• User defined transformations of datasets using matrices or descriptions can be applied.
  
• Statistical information including means, standard deviations and least squares regression lines can be calculated.
  
• Data can be saved in DrawFile, Text, CSV, SID or its own LocFile format.
  
• The user can print from the application.
  
• All user definable features can be saved as defaults.

Locus is StrongARM compatible and is suited for all 26bit versions of RISC OS.

Foundation RISCWorld