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# DIMENSION - tagging values with units 1.0

Date Added: August 13, 2013  |  Visits: 241

Joe engineer's script works in radians and meters. The lab data files are in degrees and inches and the drawings are in mm. Joe tags everything with dimensions and never worries again about conversions. He even discovers a bug where a value he thought represented area really represents distance.Whirlwind Tour: >> side = dimension(500,'m') side = 500 m >> height = dimension(2.1,'km'); >> height + side ans = 2.6 km >> side + height ans = 2600 m >> height > dimension(1,'mi') ans = 1 >> convert(side*height,'acre') ans = 259.461 acre >> msquared = dimension(1,'m',2) msquared = 1 m^2 >> convert(side*height,msquared) ans = 1050000 m^2 >> speed = dimension(60,'mi','hr',-1); >> value(speed) ans = 60Or >> speed.value ans = 60 >> convert(speed,'kph') ans = 96.5606 kph >> ubase(speed) ans = 26.8224 m s^-1 >> ubase(dimension(1,'btu')) ans = 1055.06 kg m^2 s^-2 >> convert(height,'kg') ??? Error ==> units are incompatable >> height + speed ??? Error ==> units are incompatable >> speed * dimension(1.5,'hr') ans = 90 mi >> thickness = dimension([1,2;3,4],'in'); thickness = 1 2 3 4 in >> thickness(2,1) ans = 3 in >> [ thickness [ side/1000; height/1000 ] ] ans = 1 2 19.685 3 4 82.677 in >> thickness' ans = 1 3 2 4 in >> angle = dimension(30,'deg'); >> tan(angle) ans = 0.57735Any value can be used as an argument to DIMENSION: >> i_time = dimension(1*i,'s');Users can define their own units based on previously defined units or redefine existing units: >> frlng = dimension(220,'yd'); >> add_unit(frlng,'furlong'); >> convert(height,'furlong') ans = 10.439 furlong >> add_base(dimension, 'beaut'); >> add_unit(dimension(.75,'beaut','joule',-1),'tnt'); >> ubase(dimension(700,'tnt')) ans = 525 beaut s^2 kg^-1 m^-2Some defined units:s, sec, min, hr, dy, wk, yr, mon, milleniumm, cm, mm, a, km, ft, in, mil, yd, mi, nm, ly, au, parsecr, radian, deg, arcmin, arcsec, grad, cycle, revkg, gm, mg, tonne, lbm, oz, slug, ton, amuk, kelvin, rankineamp, mamole, molbit, byte, kB, MB, GB, TBcd, candledollar, \$, centcc, l, ml, gal, qt, flozkph, knot, mph, cHz, KHz, MHz, GHz, rpmnt, dyne, lb, lbfjoule, erg, cal, btu, ev, mev, kwhsr, coulomb, ftlb, watt, gray, farad, ohm, mho, v, henry, tesla, gauss, wbThis is beta software and still in the bug-killing stage. Everything shown above works correctly, though.

 Requirements: No special requirements Platforms: Matlab Keyword: Add Basedimension,  Add Unitdimension Beaut Joule Tnt,  Add Unitfrlng Furlong,  Argument,  Beaut,  Convertheight Furlong,  Dimension,  Dimension Users,  Frlng,  Furlong,  M2some,  Milleniumm,  Parsecr,  Radian,  Time,  Ubasedimension Tnt,  Unitss Users rating: 0/10