Update cache use

- Default strategy is now no cache
- Cache name is not generated anymore
- Add --cache option

ETA.py

@@ -8,11 +8,12 @@ from scipy.signal import convolve as sp_convolve
 from scipy.signal import find_peaks
 from scipy.ndimage import rotate
 
-cache , filename = True , None
+cache , filename = '' , None
 if len( sys.argv ) < 2:
     raise Exception( 'ETA.py: type \'ETA.py -h\' for more information' )
 
-for arg in sys.argv[ 1 : ]:
+for i in range( 1 , len( sys.argv ) ):
+    arg = sys.argv[ i ]
     if arg[0] == '-':
         if len( arg ) < 2:
             raise Exception( 'ETA.py: unknown argument, type \'ETA.py -h\' for more information' )
@@ -22,7 +23,11 @@ for arg in sys.argv[ 1 : ]:
             elif arg == '-v':
                 arg = '--version'
             elif arg == '-n':
-                arg == '--no-cachge'
+                arg == '--no-cache'
+            elif arg == '-c':
+                if i == len( sys.argv ) - 1:
+                    raise Exception( 'ETA.py: cache have to take a value' )
+                arg == '--cache=' + arg[ i + 1 ]
             else:
                 raise Exception( 'ETA.py: unknown argument "' + arg + '", type \'ETA.py -h\' for more information' )
         if arg[1] == '-': # not elif because arg can change after last if
@@ -31,6 +36,7 @@ for arg in sys.argv[ 1 : ]:
                       \n    -h --help     show this help and quit\
                       \n    -v --version  show version number and quit\
                       \n    -n --no-cache do not use cache and rewrite it\
+                      \n    -c --cache    use given cache\
                       \n\
                       \nParse a naroo ETA fits' )
                 exit()
@@ -38,7 +44,9 @@ for arg in sys.argv[ 1 : ]:
                 print( '0.1' )
                 exit()
             elif arg == '--no-cache':
-                cache = False
+                cache = '' # hack, empty string mean this dir, so not a file
+            elif len( arg ) > 8 and arg[ : 8 ] == '--cache=':
+                cache = arg[ 8 : ]
             else:
                 raise Exception( 'ETA.py: unknown argument "' + arg + '", type \'ETA.py -h\' for more information' )
         else:
@@ -50,10 +58,13 @@ if filename == None:
 
 data = utils.load( filename )
 
-cache_file = pathlib.Path( 'asset/points_' + sys.argv[1].split( '/' )[-1][:-5] + '.pag' )
+cache_file = pathlib.Path( cache )
 
-if cache_file.is_file() and cache:
+if cache_file.is_file():
     with shelve.open( str( cache_file ) ) as cache:
+        for key in [ 'rotated_data' , 'border' , 'calibrations' ]:
+            if key not in cache:
+                raise Exception( 'ETA.py: missing data in cache_file' )
         data         = cache[ 'rotated_data' ]
         border       = cache[ 'border' ]
         calibrations = cache[ 'calibrations' ]
@@ -316,10 +327,11 @@ else:
         },
     }
 
-    with shelve.open( str( cache_file ) ) as cache:
-        cache[ 'rotated_data' ] = data
-        cache[ 'border' ]       = border
-        cache[ 'calibrations']  = calibrations
+    if not cache_file.exists():
+        with shelve.open( str( cache_file ) ) as cache:
+            cache[ 'rotated_data' ] = data
+            cache[ 'border' ]       = border
+            cache[ 'calibrations']  = calibrations
 
 """
 stripes curves detection
@@ -384,8 +396,10 @@ plt.imshow( mask , alpha = 0.5 )
 plt.show()
 
 temp = results[ : , 10000 ].copy()
+temp[ : fall[ 0 ] ] = 0
 for i in range( len( fall ) - 1 ):
     temp[ fall[ i ] : fall[ i + 1 ] ] = np.mean( temp[ fall[ i ] : fall[ i + 1 ] ] )
+temp[ fall[ - 1 ] : ] = np.mean( temp[ fall[ -1 ] : ] )
 
 plt.plot( results[ : , 10000 ] , label = 'raw' )
 plt.plot( temp , label = 'flat' )