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tomo/+prepare/read_angles_from_position_files.m

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+% Normally the tomography angles can be read from an angles file from OMNY,
+% flOMNI, or LaMNI. However in one case this did not work and we had to
+% extract the angle from the header of the ptycho positions file. This is a
+% script that allows just that.
+% Usage example:
+% strpatt = '~/Data10/specES1/scan_positions/scan_%05d.dat';
+% scannums = [271:277];
+% angles = prepare.read_angles_from_position_files(strpatt,scannums)
+
+function angles = read_angles_from_position_files(strpatt,scannums)
+
+filenames = cell(numel(scannums),1);
+angles = nan(numel(scannums),1);
+for ii = 1:numel(scannums)
+    filenames{ii} = sprintf(strpatt,scannums(ii));
+    try
+        aux = beamline.read_omny_pos(filenames{ii});
+        angles(ii) = aux.lsamrot_encoder;
+    catch
+       fprintf('Scan %i is missing \n', scannums(ii)) 
+    end
+end