How to convert scientific notation to standard?

sweezy92

Hello,

I have a text file with data like this:

*Name: 1
55.0021 1.1E1
103.9542 4.0E-1
…

Name: 1
…*

I want to convert the numbers in scientific notation into standard decimals. There is no other way for me to export the data. So I need to do it here. Could you help me?

Thanks!

Ekopalypse

@sweezy92

depending on your real data and that you have python script plugin installed
this might do what you want

editor.rereplace('\d+?\.\d+?E\-*\d', lambda m: float(m.group()))

sweezy92

@Ekopalypse said in How to convert scientific notation to standard?:

editor.rereplace(‘\d+?.\d+?E-*\d’, lambda m: float(m.group()))

I just installed the plugin and tried the code. It works perectly. Thanks a lot!

Ben Mcmillan

@Ekopalypse
great idea. The scientific notation in my doc is slightly different, It has:

1.0000E-001
and
1.0000E+001

as examples.
What should the script be please?

PeterJones

@Ben-Mcmillan ,

Instead of -*, which looks for 0 or more minus signs (I personally would have used -?, so it’s 0 or 1), use [+-]? , which would be 0 or 1 minus or plus signs. And then instead of the final \d , use \d+ to allow more than one digit in the exponent.

Ben Mcmillan

@PeterJones thanks. If I’m understanding correctly, this should be the final script:

editor.rereplace('\d+?\.\d+?E\[+-]?\d+', lambda m: float(m.group()))

but it doesn’t seem to do anything to my doc. Have I made a mistake?

Mark Olson

@Ben-Mcmillan
m.group() needs to take an integer as its first and only argument.
For example, m.group(0) returns the full text of the match, and m.group(n) returns the n^th capture group.

Mark Olson

This regex will capture all scientific notation numbers, and can also handle leading + signs and number with leading decimal points:
([+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][+-]?\d+)?)

Seriously, everyone should just write that down somewhere so they can look it up in times of need.