added file name sorting code to abrastract analysis

there does seem to be some kind of strange file saving ordering problem
going on... into the 'drawing' --> folder. will look at it and try and
see what its doing wrong

src/AbstractAnalysis.cpp

@@ -157,19 +157,56 @@ void AbstractAnalysis::create_dir_allocate_images()
 
 }
 
-void AbstractAnalysis::read_dir_create_list(string folder_path)
+
+
+
+bool cmp_file(string f0, string f1)
+
 {
+    
+    int v0 = atoi(f0.substr(0, f0.find("_")).c_str());
+    
+    int v1 = atoi(f1.substr(0, f1.find("_")).c_str());    
+    
+    return v0 < v1;
+    
+}
+
+
+
+void AbstractAnalysis::read_dir_create_list(string folder_path)
+
+{
+    
     File dir(folder_path);
     
+    
+    
     if(dir.exists() && dir.isDirectory()) {
+        
         vector<string> list;
+        
         dir.list(list);   
+        
+        
+        
+        std::sort(list.begin(), list.end(), cmp_file);
+        
+        
+        
         for(int i = 0; i < list.size(); i++) {
+            
             string filepath = folder_path + "/" + list[i]; 
+            
             _saved_filenames_analysis.push_back(filepath);
+            
+        }                
+        
     }
 }
-}
+
+
+
 
 void AbstractAnalysis::saveImageAnalysis(string filename)
 {

src/ColorSingleAnalysis.h

@@ -65,5 +65,8 @@ protected:
     //this is the temporary container to allow us to convert and save out greyscale images
     ofxCvColorImage         cvConvertorImage;
     
+    unsigned char * imagePixels;
+    int vectorCount;
+    ofVec2f * vectorField;
 
 };