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replacing 1e+ with powers of ten

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# 1  
Old 02-06-2012
replacing 1e+ with powers of ten
Dear all,

I am trying to write a script that modifies a file created with gnuplot.

If (the "if" is important, some files might not have them) in the (tex) file there are instances like


Code:
      \put(1342,704){\makebox(0,0)[r]{\strut{} 1e+31}}%
      \csname LTb\endcsname%
      \put(1342,1383){\makebox(0,0)[r]{\strut{} 1e+32}}%
      \csname LTb\endcsname%
      \put(1342,2061){\makebox(0,0)[r]{\strut{} 1e+33}}%
      \csname LTb\endcsname%
      \put(1342,2740){\makebox(0,0)[r]{\strut{} 1e+34}}%
      \csname LTb\endcsname%
      \put(1342,3418){\makebox(0,0)[r]{\strut{} 1e+35}}%
      \csname LTb\endcsname%
      \put(1342,4097){\makebox(0,0)[r]{\strut{} 1e+36}}%
      \csname LTb\endcsname%
      \put(1342,4775){\makebox(0,0)[r]{\strut{} 1e+37}}%
      \csname LTb\endcsname%
      \put(1474,484){\makebox(0,0){\strut{} 1e-08}}%
      \csname LTb\endcsname%
      \put(2073,484){\makebox(0,0){\strut{} 1e-07}}%
      \csname LTb\endcsname%
      \put(2673,484){\makebox(0,0){\strut{} 1e-06}}%
      \csname LTb\endcsname%
      \put(3272,484){\makebox(0,0){\strut{} 1e-05}}%
      \csname LTb\endcsname%
      \put(3872,484){\makebox(0,0){\strut{} 0.0001}}%
      \csname LTb\endcsname%
      \put(4471,484){\makebox(0,0){\strut{} 0.001}}%
      \csname LTb\endcsname%
      \put(5071,484){\makebox(0,0){\strut{} 0.01}}%
      \csname LTb\endcsname%
      \put(5670,484){\makebox(0,0){\strut{} 0.1}}%
      \csname LTb\endcsname%
      \put(6270,484){\makebox(0,0){\strut{} 1}}%

then replace them with

Code:
      \put(1342,704){\makebox(0,0)[r]{\strut{} $10^{31}$}}%
      \csname LTb\endcsname%
      \put(1342,1383){\makebox(0,0)[r]{\strut{} $10^{32}$}}%
      \csname LTb\endcsname%
      \put(1342,2061){\makebox(0,0)[r]{\strut{} $10^{33}$}}%
      \csname LTb\endcsname%
      \put(1342,2740){\makebox(0,0)[r]{\strut{} $10^{34}$}}%
      \csname LTb\endcsname%
      \put(1342,3418){\makebox(0,0)[r]{\strut{} $10^{35}$}}%
      \csname LTb\endcsname%
      \put(1342,4097){\makebox(0,0)[r]{\strut{} $10^{36}$}}%
      \csname LTb\endcsname%
      \put(1342,4775){\makebox(0,0)[r]{\strut{} $10^{37}$}}%
      \csname LTb\endcsname%
      \put(1474,484){\makebox(0,0){\strut{} $10^{-08}$}}%
      \csname LTb\endcsname%
      \put(2073,484){\makebox(0,0){\strut{} $10^{-07}$}}%
      \csname LTb\endcsname%
      \put(2673,484){\makebox(0,0){\strut{} $10^{-06}$}}%
      \csname LTb\endcsname%
      \put(3272,484){\makebox(0,0){\strut{} $10^{-05}$}}%
      \csname LTb\endcsname%
      \put(3872,484){\makebox(0,0){\strut{} 0.0001}}%
      \csname LTb\endcsname%
      \put(4471,484){\makebox(0,0){\strut{} 0.001}}%
      \csname LTb\endcsname%
      \put(5071,484){\makebox(0,0){\strut{} 0.01}}%
      \csname LTb\endcsname%
      \put(5670,484){\makebox(0,0){\strut{} 0.1}}%
      \csname LTb\endcsname%
      \put(6270,484){\makebox(0,0){\strut{} 1}}%



i.e.

all e in a line preceded by \strut{} ---> replace with 0

all + in a line preceded by \strut{} ---> replace with ^{ and close bracket

all - in a line preceded by \strut{} ---> add before ^{ and close bracket

and then wrap all instances of 10^{whatever} with dollars ---> $10^{whatever}$


Thanks....
# 2  
Old 02-06-2012
All what in a line? Smilie

It looks like all you want to do is replace 1e+31 with $10^31?

Are you sure that's right? $10 sounds like a variable, not a number, and x^y isn't the same as x * 10^y...
# 3  
Old 02-06-2012
Hi,

that's right

This is a file that will be fed to latex, so that mathematical expressions must be that way:

$10^{31}$

etc...
# 4  
Old 02-06-2012
Try a bit of sed:
Code:
sed 's/1e+\{0,1\}\(-\{0,1\}[0-9]*\)/$10^{\1}$/g' infile

# 5  
Old 02-07-2012
Thanks! That did it!

Now... is there a way to remove the leading zeroes?

I mean, transform all 09 08 07 into 9 8 7

That would be perfect

Thanks

---------- Post updated at 08:25 PM ---------- Previous update was at 08:31 AM ----------

Code:
sed 's/1e+\{0,1\}\(-\{0,1\}[0-9]*\)/$10^{\1}$/g' | sed 's/{-0\(.*\)/{-\1/' | sed 's/{0\(.*\)/{\1/'

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