Dean,
This is now where I think it will work, at least in Python.
Now I have to get it into the addon API and test it.
If you check the attachment and run it, you will see what
I am referring to about the notation format.
I next will look into adding the alpha characters, but
that will require some changes to the program.
As it is you don't need to stick a fork in it to know it is done.
Once again I am sending this to you off-list because I would like
you to see the attachment and test it for yourself if you want.
Thank you!
Tom
--
"PC, "Where would you like to go today?" ...
Mac, "Where would you like to be tomorrow?" ...
Linux, "Are you guys coming, or not?""
# eng_alpha.py
#
def eng (F = 0, fmt = "%fe%d"):
"""
Formats a floating point number (F) according to the format
provided (fmt). Tries to use engineering notation (i.e. the
exponent is in powers of three).
Dean Provins, June, 2010
"""
LExp = ['0','0','0','m','0','0','mu','0','0','n','0','0','p']
HExp = ['0','0','0','k','0','0','M','0','0','G','0','0','T']
f = abs (F)
n = 0
s = +1
if F < 0:
s = -1
if f != 0:
if f >= 1.:
while (f >= 100):
f /= 10.
n += 1
f *= 10.
n -= 1
while (n % 3):
n += 1
f /= 10.
else:
while (f < 99):
f *= 10.
n -= 1
while (n % 3):
n += 1
f /= 10.
# Uncomment these if you want a leading '0.'
#f /= 10.
#n += 1
#S = fmt % (s * f, n) # store this result in a cell
return fmt % (s * f, n) # return the formatted string to store in a cell
# ---------end of the function ---------
if __name__ == "__main__":
# Some tests... Try them by running "python eng.py"
print "some tests"
print "----------"
print "0:", eng ()
print
print "1.:", eng (1.)
print "1.23:", eng (1.23)
print "123:", eng (123)
print "1234.567:", eng (1234.567)
print
print "11:", eng (11)
print
print "0.4:", eng (0.4)
print "0.0004:", eng (0.0004)
print "0.0000004:", eng (0.0000004)
print
print "0.004:", eng (0.004)
print
print "0.001234567E-7:", eng (0.001234567E-7)
print "6,000,000:", eng (6000000)
print "6,000,000,000:", eng (6000000000)
print "6,000,000,000,000:", eng (6000000000000)
print
print "* * * * < 1,000, > 1 * * * * * * * * * * "
print "111:", eng (111)
print "222:", eng (222)
print "333:", eng (333)
print "444:", eng (444)
print "555:", eng (555)
print "666:", eng (666)
print "777:", eng (777)
print "888:", eng (888)
print "999:", eng (999)
print
print "* * * * * * Negatives! * * * * * * * * "
print
print "-111:", eng (-111)
print "-222:", eng (-222)
print "-333:", eng (-333)
print "-444:", eng (-444)
print "-555:", eng (-555)
print "-666:", eng (-666)
print "-777:", eng (-777)
print "-888:", eng (-888)
print "-999:", eng (-999)
print
print "* * * * * * * Less than One * * * * * * * "
print
print "-0.4:", eng (-0.4)
print "-0.0004:", eng (-0.0004)
print "-0.0000004:", eng (-0.0000004)
print
print "-0.004:", eng (-0.004)
print
print "* * * * * * Just over One Thousand * * * * "
print
print "1111:", eng (1111)
print "2222:", eng (2222)
print "3333:", eng (3333)
print "4444:", eng (4444)
print "5555:", eng (5555)
print "6666:", eng (6666)
print "7777:", eng (7777)
print "8888:", eng (8888)
print "9999:", eng (9999)---------------------------------------------------------------------
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