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Full Discussion: Bash Scientific Notation
Top Forums Shell Programming and Scripting Bash Scientific Notation Post 302226354 by amit_57 on Monday 18th of August 2008 06:40:46 PM
Old 08-18-2008
Thanks all, in case you are interested -- I ended up using sed:

floatVar1=$(echo $Var1 | sed 's/\([0-9]*\(\.[0-9]*\)\?\)[eE]+\?\(-\?[0-9]*\)/(\1*10^\3)/g;s/^/scale=30;/'| bc)

There are some difficulties with the specific scientific notation my data files were using. (having an extra + after the E, 1.00e+1 = 10), so I had trouble getting bc to work, but I may have just messed up. However, the idea behind the question was supposed to be specifically how to convert something from scientific notation to float. Sorry for the confusion.
 

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LEARN ABOUT DEBIAN

ngraph

NGRAPH(1)						      General Commands Manual							 NGRAPH(1)

NAME

       Ngraph - creating scientific 2-dimensional graphs

SYNOPSIS

       ngraph [options] [data file(s) or ngp file]

DESCRIPTION

       Ngraph  is  the program to create scientific 2-dimensional graphs for researchers and engineers. Graphs can be exported to PostScript, SVG,
       PNG or PDF format.

OPTIONS

       Command line options are:

       -L file
	      load ngp file

       -x column
	      data column for the x axis

       -y column
	      data column for the y axis

       -X     use X axis as the x axis

       -Y     use Y axis as the y axis

       -U     use U axis as the x axis

       -R     use R axis as the y axis

       -d {mark | line | polygon | curve | diagonal | arrow | rectangle | rectangle_fill | rectangle_solid_fill | errorbar_x | errorbar_y | stair-
       case_x | staircase_y | bar_x | bar_y | bar_fill_x | bar_fill_y | bar_solid_fill_x | bar_solid_fill_y | fit}
	      specify plot type

       -m type
	      specify mark type (0-89)

       -o size
	      specify mark size

       -l style
	      specify line style

       -w width
	      specify line width

       -CR n  specify red component of the 1st plot color (0-255)

       -CG n  specify green component of the 1st plot color (0-255)

       -CB n  specify blue component of the 1st plot color (0-255)

       -cr n  specify red component of the 2nd plot color (0-255)

       -cg n  specify green component of the 2nd plot color (0-255)

       -cb n  specify blue component of the 2nd plot color (0-255)

       -s line
	      specify number of the head skip

       -r step
	      specify number of the read step

       -f line
	      specify number of the final line

       -vx n  neighbor average of the x data

       -vy n  neighbor average of the y data

       -mx formula
	      specify math transformation for the x data

       -my formula
	      specify math transformation for the y data

       -ex {linear | log | inverse | MJD}
	      specify scale type of the x axis

       -ey {linear | log | inverse | MJD}
	      specify scale type of the y axis

       -minx value
	      specify minimum value of x axis

       -maxx value
	      specify maximum value of x axis

       -incx value
	      specify increment value of x axis

       -miny value
	      specify minimum value of y axis

       -maxy value
	      specify maximum value of y axis

       -incy value
	      specify increment value of y axis

       -g     load settings from data file

       -png file
	      convert ngp file to PNG format

       -pdf file
	      convert ngp file to PDF format

       -ps file
	      convert ngp file to PostScript format

       -eps file
	      convert ngp file to Encapsulated PostScript format

       -svg file
	      convert ngp file to SVG format

       -gra file
	      convert ngp file to GRA format

       -dialog
	      show print dialog (with -p option)

       -p file
	      print ngp file

       -n     output ngp-file to stdout

       -h, --help
	      show help message

       -v, --version
	      show version of Ngraph

       -V, --VERSION
	      show detail information about Ngraph

FILES

       ${HOME}/.Ngraph/Ngraph.nsc
	      start up script

       ${HOME}/.Ngraph/Ngraph.ini
	      configuration file

       ${HOME}/.Ngraph/Ngraph.ngp
	      default graph

AUTHORS

       Satoshi ISHIZAKA

       Hiroyuki Ito <ZXB01226@nifty.com>

SEE ALSO

       ngp2(1)

COPYRIGHT

       Copyright (C) 2003 Satoshi ISHIZAKA

       Copyright (C) 2008-2011 Hiroyuki Ito

4th Berkeley Distribution					       Local								 NGRAPH(1)
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