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71 lines
2.9 KiB
Matlab
71 lines
2.9 KiB
Matlab
%GET_UNIT_LENGTH returns the SI unit for a given length
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% [unit,val] = get_length_unit(val)
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% Assumes that val is given in [m].
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%
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% **val... length
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%
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% returns:
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% ++ unit SI unit string
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% ++ val input value converted to SI unit
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%
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% EXAMPLE:
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% [unit, val] = get_unit_length(2e-3);
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% unit
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% 'mm'
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% val
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% '2'
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%
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%*-----------------------------------------------------------------------*
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%| |
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%| Except where otherwise noted, this work is licensed under a |
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%| Creative Commons Attribution-NonCommercial-ShareAlike 4.0 |
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%| International (CC BY-NC-SA 4.0) license. |
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%| |
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%| Copyright (c) 2017 by Paul Scherrer Institute (http://www.psi.ch) |
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%| |
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%| Author: CXS group, PSI |
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%*-----------------------------------------------------------------------*
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% You may use this code with the following provisions:
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%
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% If the code is fully or partially redistributed, or rewritten in another
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% computing language this notice should be included in the redistribution.
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%
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% If this code, or subfunctions or parts of it, is used for research in a
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% publication or if it is fully or partially rewritten for another
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% computing language the authors and institution should be acknowledged
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% in written form in the publication: “Data processing was carried out
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% using the “cSAXS matlab package” developed by the CXS group,
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% Paul Scherrer Institut, Switzerland.”
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% Variations on the latter text can be incorporated upon discussion with
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% the CXS group if needed to more specifically reflect the use of the package
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% for the published work.
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%
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% A publication that focuses on describing features, or parameters, that
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% are already existing in the code should be first discussed with the
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% authors.
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%
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% This code and subroutines are part of a continuous development, they
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% are provided “as they are” without guarantees or liability on part
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% of PSI or the authors. It is the user responsibility to ensure its
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% proper use and the correctness of the results.
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function [unit,val] = get_unit_length(val)
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units = {'m', 'mm', 'um', 'nm', 'pm', 'fm', 'am'};
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scl = 0;
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while true
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if abs(val)*1e3^(scl)>=1 || scl==length(units)-1
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val = val*1e3^(scl);
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unit = units{scl+1};
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break;
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else
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scl = scl+1;
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end
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end
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end
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