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Physical units/CalDims

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m (corrected days per year and result of the related calculation)
 
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The motivation for writing CalDims was to have an easy to use calculation tool that has support for units.
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CalDims is a flexible and easy to use calculation tool that has support for units.
   
 
== The calculator's features ==
 
== The calculator's features ==
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* Support for user defined basic units and derrived units
 
* Support for user defined basic units and derrived units
 
* user defined functions
 
* user defined functions
* work sheets can be modified/saved via shell
 
* (1/3)*3 == 1 (No rounding errors)
 
 
* built-in feature to simplify units
 
* built-in feature to simplify units
 
* easy unit-conversion
 
* easy unit-conversion
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840 W h
 
840 W h
 
> #How much is it in a year (we derrive `year` first)
 
> #How much is it in a year (we derrive `year` first)
> year := 265 d
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> year := 365 d
 
ok.
 
ok.
 
> 60 W * 2 h / d * 1 year | W h
 
> 60 W * 2 h / d * 1 year | W h
31799.999999999996 W h
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43799.99999999999 W h
 
> # Bits and bytes are not defined. We do so:
 
> # Bits and bytes are not defined. We do so:
 
> \u bit
 
> \u bit
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</haskell>
 
</haskell>
 
== Sources ==
 
== Sources ==
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Sources are availables at HackageDB:
darcs http://tel.netbeisser.de/darcs/CalDims
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http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims
 
darcs http://tel.netbeisser.de/darcs/CalDimsApps
 
   
   

Latest revision as of 18:47, 1 February 2009

CalDims is a flexible and easy to use calculation tool that has support for units.

[edit] 1 The calculator's features

  • Support for user defined basic units and derrived units
  • user defined functions
  • built-in feature to simplify units
  • easy unit-conversion

[edit] 2 Example session

> # A bird is moving 1 meter per second, how far will it be in 2 hours?
> 1m/s * 2h | m
7200 m
> # A 60 Watt electric light is burning 2 hours a day. How much energy is consumed in one week?
> 60 W * 2 h / d * 7 d | J
3024000 J
> # What's that in Watt hours?
> 60 W * 2 h / d * 7 d | W h
840 W h
> #How much is it in a year (we derrive `year` first)
> year := 365 d
ok.
> 60 W * 2 h / d * 1 year | W h
43799.99999999999 W h
> # Bits and bytes are not defined. We do so:
> \u bit
ok, but an object has changed
> byte := 8 bit
ok, but an object has changed
> kbyte := 1024 byte
ok.
> mbyte := 1024 kbyte
ok.
> 2 mbyte | -
16777216 bit
> 2 mbyte | kbyte
2048 kbyte

[edit] 3 Sources

Sources are availables at HackageDB: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims