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+beamline/read_position_file.m
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% READ_POSITION_FILE Read positions from a file, the format and header are
% compatible with multiple interferometer positions and standard deviations
% as written by Orchestra and the sgalil spec macro.
%
% struct_out = read_position_file( posfile )
% Inputs:
% **posfile filename with path
% *returns*
% ++struct_out is a structure containing fields including the values
% for header and for each scanning point
% 12 June 2013
% June6 2015 - Changed in order to accept an arbitrary number
% of values in order to be compatible with 10 columns for flOMNI and 19 for
% OMNY
% 15 Apr 2019 - Changed name and generalized description beyond OMNY and
% Orchestra
%*-----------------------------------------------------------------------*
%|                                                                       |
%|  Except where otherwise noted, this work is licensed under a          |
%|  Creative Commons Attribution-NonCommercial-ShareAlike 4.0            |
%|  International (CC BY-NC-SA 4.0) license.                             |
%|                                                                       |
%|  Copyright (c) 2017 by Paul Scherrer Institute (http://www.psi.ch)    |
%|                                                                       |
%|      Author: CXS group, PSI  |
%*-----------------------------------------------------------------------*
% You may use this code with the following provisions:
%
% If the code is fully or partially redistributed, or rewritten in another
% computing language this notice should be included in the redistribution.
%
% If this code, or subfunctions or parts of it, is used for research in a
% publication or if it is fully or partially rewritten for another
% computing language the authors and institution should be acknowledged
% in written form in the publication: “Data processing was carried out
% using the “cSAXS matlab package” developed by the CXS group,
% Paul Scherrer Institut, Switzerland.”
% Variations on the latter text can be incorporated upon discussion with
% the CXS group if needed to more specifically reflect the use of the package
% for the published work.
%
% A publication that focuses on describing features, or parameters, that
% are already existing in the code should be first discussed with the
% authors.
%
% This code and subroutines are part of a continuous development, they
% are provided “as they are” without guarantees or liability on part
% of PSI or the authors. It is the user responsibility to ensure its
% proper use and the correctness of the results.
function struct_out = read_position_file( posfile )
assert(exist(posfile, 'file')>0, ['Position file ', posfile, ' not found'])
f = fopen(posfile,'r');
header = textscan(f,'%s %d, %s %f',1);
struct_out.(header{1}{1}) = header{2};
struct_out.(header{3}{1}) = header{4};
names = textscan(f,'%s',1,'Delimiter','\r');
names = strsplit(char(names{1}));
reading_string = ['%f', repmat(' %f',1,numel(names)-1)];
values = textscan(f,reading_string);
fclose(f);
for ii = 1:numel(names)
struct_out.(char(names(ii))) = values{ii};
end
end