Use fullfile for more stable path management and fix IO_stf problem w…

…ith one beam

IO_stf.m

@@ -1,10 +1,15 @@
 function status = IO_stf(path)
 
-stf_init = load(strcat(path,'stf_with_separate_rays.mat'), 'stf');
-ray_init = load(strcat(path,'stf_with_separate_rays.mat'), 'rays');
+stf_init = load(fullfile(path,'stf_with_separate_rays.mat'), 'stf');
+ray_init = load(fullfile(path,'stf_with_separate_rays.mat'), 'rays');
 
 %%
 stf = [stf_init.stf{:}];
+
+if numel(stf) == 1
+    ray_init.rays = {ray_init.rays};
+end
+
 ray = cell(size(ray_init.rays, 2), 1);
 
 for i=1:size(ray_init.rays, 2)
@@ -16,7 +21,7 @@
 end
 
 %%
-save(strcat(path,'stf.mat'), 'stf')
+save(fullfile(path,'stf.mat'), 'stf')
 
 status = 'STF written';
 

matRad_callFromPython.m

@@ -3,7 +3,7 @@ function matRad_callFromPython(functionName, outputName, inputPath, outputPath,
 
 for i=1:length(varargin)
     if contains(string(varargin{i}), string('.mat'))
-        load(strcat(inputPath, varargin{i}));
+        load(fullfile(inputPath, varargin{i}));
         [path, var, ext]=fileparts(varargin{i});
         functionVars{i}=var;
     else