CALCULATORS

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Utilites (73) / Calculators (3)

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Program Details

Qalculate 0.9.6 in Utilites / Calculators   Votes: 1


 Submitted by x1a4 on 2008-04-05  
 Update by x1a4 on 2008-04-05  

Multi-purpose desktop calculator for GNU/Linux. It is small and simple to use but with much power and versatility underneath. Features include customizable functions, units, arbitrary precision, plotting, and a user-friendly interface (KDE or GTK+).

Other features include:

Math Library

* Calculation and parsing:
o Basic operations and operators: + - * / ^ E () && || ! < > >=
o Fault-tolerant parsing of strings: log 5 / 2 .5 (3) + (2( 3 +5 = ln(5) / (2.5 * 3) + 2 * (3 + 5)
o Expressions may contain any combination of numbers, functions, units, variables, vectors and matrices
o Supports complex and infinite numbers
o Supports all number bases from 2 to 36, time format and roman numerals
o Ability to disable functions, variables, units or unknown variables for less confusion: ex. when you do not want (a+b)^2 to mean (are+barn)^2 but ("a"+"b")^2
o Controllable implicit multiplication
o Matrices and vectors, and related operations (determinants etc.)
o Verbose error messages
o Arbitrary precision
o RPN mode

* Result display:
o Supports all number bases from 2 to 36, plus sexagesimal numbers, time format and roman numerals
o Many customization options: precision, max/min decimals, multiplication sign, etc.
o Exact or approximate
o Fractions: 4 / 6 * 2 = 1.333... = 4/3 = 1 + 1/3

* Symbolic calculation:
o Ex. (x + y)^2 = x^2 + 2xy + y^2; 4 "apples" + 3 "oranges"
o Factorization and simplification
o Differentiation and integration
o Can solve most equations and inequalities
o Customizable assumptions give different results (ex. ln(2x) = ln(2) + ln(x) if x is assumed positive)

* Functions:
o All the usual functions: sine, log, etc... : ln 5 = 1.609; sqrt(tan(20) - 5) = sqrt(-2.76283905578)
o Lots of statistical, financial, geometrical, and more functions (approx. 200)
o If..then..else function, optional arguments and more features for flexible function creation
o Can easily be created, edit and saved to a standard XML file

* Units:
o Supports all SI units and prefixes (including binary), as well as imperial and other unit systems
o Automatic conversion: ft + yd + m = 2.2192 m
o Implicit conversion: 5m/s to mi/h = 11.18 miles/hour
o Smart conversion: can automatically convert 5 kg*m/s^2 to 5 newton
o Currency conversion with retrieval of daily exchange rates
o Different name forms: abbreviation, singular, plural (m, meter, meters)
o Can easily be created, edit and saved to a standard XML file

* Variables and constants:
o Basic constants: pi, e
o Lots of physical constants and elements
o CSV file import and export
o Can easily be created, edit and saved to a standard XML file
o Flexible, can contain simple numbers, units or whole expressions
o Data sets with objects and associated properties in database-like structure

* Plotting:
o Uses Gnuplot
o Can plot functions or data (matrices and vectors)
o Ability to save plot to PNG image, postscript, etc.
o Several customization options

* and more...


User Interface

* Graphical user interfaces implemented using KDE or GTK+-2.0 and Glade XML
* Flexible expression entry and separate result display
* Displays whether result is precise or not
* Small and ... not so small mode
* Practical menus give fast access to all advanced features
* Calculation history
* Optional traditional calculator buttons
* Dialogs for management of and easy access to functions, variables and units (with quick conversion)
* User friendly dialogs for functions, with description and entries for arguments
* Create/edit functions, variables and units
* Easy editing of matrices and vectors
* Easy interface to gnuplot
* Separate window for fast conversion between number bases
* Periodic table
* Small separate utilities for base, currency and unit conversion
* Additional text based interface with full functionality
* and more...


Homepage: http://qalculate.sourceforge.net/
Download: http://qalculate.sourceforge.net/downloads.html
Tags: qalculate advanced scientific calculator
Required Distribution: No



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