Exemplo n.º 1
0
def Current_Directory():

    #-----------------------------------------------------------
    #NOTES:  IDL's CD routine behaves differently on different
    #        platforms.  This routine provides a wrapper around
    #        CD to avoid this problem.  On Macs, the directory
    #        separator is ":" and it is automatically appended.

    #        With the separator, filepaths can be constructed
    #        as follows:   filepath = (directory + filename)
    #-----------------------------------------------------------
    directory = os.getcwd()

    #---------------------------------
    # Append a directory separator ?
    #---------------------------------
    I2PY_expr = idl_func.device_name()
    if I2PY_expr == 'WIN':
        directory = (directory + '\\')
    elif I2PY_expr == 'X':
        directory = (directory + '/')
    elif I2PY_expr == 'MAC':
        dum = int16(0)  #(no action needed on Macs)
    else:
        dum = int16(0)

    return directory
Exemplo n.º 2
0
def Current_Directory():

    #-----------------------------------------------------------
    #NOTES:  IDL's CD routine behaves differently on different
    #        platforms.  This routine provides a wrapper around
    #        CD to avoid this problem.  On Macs, the directory
    #        separator is ":" and it is automatically appended.

    #        With the separator, filepaths can be constructed
    #        as follows:   filepath = (directory + filename)
    #-----------------------------------------------------------   
    directory = os.getcwd()
    
    #---------------------------------
    # Append a directory separator ?
    #---------------------------------
    I2PY_expr = idl_func.device_name()
    if I2PY_expr == 'WIN':    
        directory = (directory + '\\')
    elif I2PY_expr == 'X':    
        directory = (directory + '/')
    elif I2PY_expr == 'MAC':    
        dum = int16(0)   #(no action needed on Macs)
    else:    
        dum = int16(0)
      
    return directory
Exemplo n.º 3
0
def Get_Site_Prefix(filepath):

    #----------------------------------
    # Get file separator for platform
    #----------------------------------
    I2PY_expr = idl_func.device_name()
    if (I2PY_expr == 'WIN'):
        sep = uint8(92)  #byte('\')
    elif (I2PY_expr == 'X'):
        sep = uint8(47)  #byte('/')
    elif (I2PY_expr == 'MAC'):
        sep = uint8(58)  #byte(':')
    else:
        sep = uint8(92)

    #--------------------------------------
    # Extract filename from filepath as
    # everything after last dir separator
    #--------------------------------------
    b = idl_func.byte(filepath)
    w = where(b == sep)
    ns = size(w[0])
    if (ns != 0):
        start = w[ns - int32(1)] + int32(1)
        filename = filepath[start:]
    else:
        filename = filepath

    #-------------------------------------
    # Extract prefix from filename as
    # everything up to underscore or dot
    #-------------------------------------
    b = idl_func.byte(filename)
    w = where(b == uint8(95))
    nw = size(w[0])
    if (nw == 0):
        w = where(b == uint8(46))
        nw = size(w[0])  #(look for dots)
    if (nw != 0):
        p = w[nw - 1]
        prefix = filename[0:0 + p]
    else:
        prefix = filename

    return (prefix, filename)
Exemplo n.º 4
0
def Get_Site_Prefix(filepath):
 
    #----------------------------------
    # Get file separator for platform
    #----------------------------------
    I2PY_expr = idl_func.device_name()
    if (I2PY_expr == 'WIN'):    
        sep = uint8(92)    #byte('\')
    elif (I2PY_expr == 'X'):    
        sep = uint8(47)    #byte('/')
    elif (I2PY_expr == 'MAC'):    
        sep = uint8(58)    #byte(':')
    else:    
        sep = uint8(92)
       
    #--------------------------------------
    # Extract filename from filepath as
    # everything after last dir separator
    #--------------------------------------
    b = idl_func.byte(filepath)
    w = where(b == sep)
    ns = size(w[0])
    if (ns != 0):    
        start = w[ns - int32(1)] + int32(1)
        filename = filepath[start:]
    else:    
        filename = filepath
    
    #-------------------------------------
    # Extract prefix from filename as
    # everything up to underscore or dot
    #-------------------------------------
    b = idl_func.byte(filename)
    w = where(b == uint8(95))
    nw = size(w[0])
    if (nw == 0):    
        w = where(b == uint8(46))
        nw = size(w[0])  #(look for dots)
    if (nw != 0):    
        p = w[nw - 1]
        prefix = filename[0:0+p]
    else:    
        prefix = filename
        
    return (prefix, filename)
Exemplo n.º 5
0
 def _ret():
 def _ret():
     _opt_rv = zip(_opt, [MY_KEY, key2, abc])
     _rv = [_o[1] for _o in _opt_rv if _o[0] is not None]
     if (len(_rv) == 1):
         return _rv[0]
     else:
         return tuple(_rv)
 
 # FORWARD_FUNCTION Func1, Func2
 
 #------------------------------------------
 # IF STATEMENT with AND, OR and NOT tests
 #------------------------------------------
 if not(logical_or(a, b)):    
     n = int16(0)
 if (logical_or(a, b)):    
     n = int16(0)
 if (logical_or(logical_or(a, b), c)):    
     n = int16(0)
 if (logical_and((logical_or(a, b)), c)):    
     n = int16(0)
 if (logical_and(logical_and(a, b), c)):    
     n = int16(0)
 if (logical_and((logical_or(a, b)), not(c))):    
     n = int16(0)
 if (logical_and((logical_or(a, b)), (logical_or(c, d)))):    
     n = int16(0)
 if logical_or(a, b):    
     n = int16(0)
 
 #------------------------
 #  Square bracket tests
 #------------------------
 a = my_func(int16([1, 2, 3, 4]))
 a = int16([1, 2, 3, 4])
 a = uint8([0, 1, 2, 3])
 a = int16([0, 1, 2, 3])
 a = int32([0, 1, 2, 3])
 a = float64([0, 1, 2, 3])
 a = int64([0, 1, 2])
 a = float32([0.0, 1, 2.])
 a = array(['x', 'y', 'z'])
 a = array(["x", "y", "z"])
 a = array(['x', "y"])
 msg = array(['Error message.'])
 #---------------------------
 a = concatenate((a,[1]))
 #---------------------------
 a = concatenate(([0],a))
 #---------------------------
 a = concatenate(([1,2,3],[4]))
 #---------------------------
 a = concatenate(([0],[1,2,3]))
 #---------------------------
 a = concatenate(([1,2],[0],[3,4]))
 #---------------------------
 a = concatenate(([1,2,3],b))
 #---------------------------
 a = concatenate((b,[1,2,3]))
 #---------------------------
 a = array([int16([1, 2, 3]), int16([4, 5, 6])])
 #---------------------------
 a = int16([1, 2, 3])
 b = int16([4, 5, 6])
 c = concatenate((a, b))
 #----------------------------------
 a = array([array([int16([1, 2]), int16([3, 4])]), array([int16([5, 6]), int16([7, 8])])])
 
 #-------------------
 # Array subscripts
 #-------------------
 b = a(3)
 b = a(1, 2)
 b = a[4]
 b = a[array([4])]
 b = a[2,2]
 b = a[:,2]
 b = a[1:4,0:3]
 b = a[w1[w2]]
 
 #-----------------------
 #  SORT function tests
 #----------------------------------------------
 #Next line must use "array" vs. "concatenate"
 #for converting the brackets, otherwise usage
 #shown will not work in Python.
 #----------------------------------------------
 b = int16([5, 3, 1, 2, 8, 7, 0, 6])
 s = argsort(ravel(b))
 b2 = b[s]
 
 #---------------------
 # Cleaner increments
 #---------------------
 b12 += abc
 b12 += abc
 
 #----------------------------------
 # Minimum/Maximum array operators
 #----------------------------------
 b = minimum(a, 5)
 a = minimum(a, 5)   #(Should we do in-place with 3rd arg to minimum() ?)
 a = maximum(a, 5)
 
 #-------------------------
 #  Boolean keyword tests
 #------------------------------------------------
 #  Note also how unset keywords are initialized
 #  to KEY=None in "Test_Procedure" at the top.
 #------------------------------------------------
 a = my_function(key1=uint8(0), key2=0)          #(unset keywords)
 a = my_function(key3=uint8(1), key4=1, key5=True)   #(set keywords)
 a = my_function(key1=key1)
 a = my_function(key1=some_function(b))
 
 #------------------------------
 #  KEYWORD_SET function tests
 #------------------------------
 KEY1 = (KEY1 not in [0,None])
 if ((KEY1 not in [0,None])):    
     print 'Key is set.'
 if (KEY1 in [0,None]):    
     KEY1 = int16(0)
 if (MY_KEY in [0,None]):    
     MY_KEY = int16(0)
 if not(a):    
     b = int16(0)   # (should be "not" vs. "logical_not")
 
 #------------------
 #  Special tests
 #------------------
 a = int16([1, 2, 3]).max()
 i = arange(5, dtype='Int16')
 
 #-----------------------------
 #  Some IDL system variables
 #-----------------------------
 p = sys.path
 d = idl_func.device_name()
 os = platform.system()
 osf = ('Windows' if (platform.system()=='Windows') else 'UNIX')
 
 #-------------------------
 # NaN and Infinity tests
 #-------------------------
 f_nan = float32(numpy.NaN)
 f_inf = float32(numpy.Infinity)
 d_nan = float64(numpy.NaN)
 d_inf = float64(numpy.Infinity)
 #------------------------
 print isfinite(a)
 print isnan(a)
 print isinf(a)
 print isinf(a)
 print isinf(a)
 
 #----------------------------
 #  PATH_SEP function tests
 #----------------------------
 sep = os.sep
 
 #-----------------------------------------------
 #  PRINT procedure tests (with FORMAT keyword)
 #-----------------------------------------------
 print float32(3.14159), 'hello', 456
 I2PY_out_str = idl_func.string(float32(3.14159), 'hello', 456, format='(F6.3, A7, 4X, I3)')
 print I2PY_out_str
 I2PY_out_str = idl_func.string(float32(3.14159), float32(2.718), float32(1.000), 'hello', format='(3F6.3, A7)')
 print I2PY_out_str
 print 'my_string'
 print 'this ' + 'that'
 print 'this' + 'that'
 #-------------------------------------------------------
 #  Equals sign inside of quotes vs. keyword assignment
 #-------------------------------------------------------
 print 'path separator = ' + os.sep
 print "path separator = " + os.sep
 
 #-------------------------
 #  STRING function tests
 #-------------------------
 s = str(number)
 s = idl_func.string(number, format=format)   #;;;;;;;;;;;
 s = idl_func.string(float32(3.14159), 'hello', 456)
 s = idl_func.string(float32(3.14159), 'hello', 456, format='(F6.3, A7, 4X, I3)')
 #---------------------------------------
 #  Special behavior (not supported yet)
 #---------------------------------------
 s = idl_func.string()     #(should be a string array)
 s = str(uint8([72, 101, 108, 108, 111]))   #(should be "Hello")
 
 #-----------------------------------
 # Scalar constant assignment tests
 #-----------------------------------
 a = int16(1)      #In assignments, wrap ints with "int16()"
 a = int32(1)
 a = float32(1.0)
 a = float64(1)
 a = int64(1)
 a = uint64(1)
 a = uint32(1)
 a = uint8(1)
 
 #------------------
 # Structure tests
 #------------------
 v = idl_func.bunch(a=int32(0), b=uint8(0), c=float32(0.0), d=zeros([5], dtype='Int16'), e='this')  #(anonymous)
 V = idl_func.bunch(a=int32(0), b=uint8(0), c='this')  #(named)
 print v.__dict__.values()[0]      #(tag numbers or field indices)
 print v.__dict__.values()[1]
 #(Note:  Use "repeat" to "replicate" an IDL structure.)
 
 #-------------------------
 #  READF procedure tests
 #-------------------------
 a, b = idl_func.readf(file_1, a, b)
 a, b = idl_func.readf(file_unit, a, b)
 a, b = idl_func.readf(file_unit, a, b, format=('F8.3, I3'))
 
 #---------------------------------
 # "if (N_ELEMENTS(g) eq 0)" TEST
 #---------------------------------
 if (idl_func.n_elements(g) == 0):    
     g = int16(1)
 if (idl_func.n_elements(a_b) == 0):    
     a_b = int16(1)
 if (idl_func.n_elements(a + b) == 0):    
     c = int16(1)
 if (idl_func.n_elements(g) == 1):    
     g = int16(2)
 
 #------------------------------------------
 # OPENR procedure tests (and SWAP_ENDIAN)
 #------------------------------------------
 file_unit = open('my_file.bin', 'rb')
 I2PY_SWAP_ENDIAN = True
 file_unit = open('my_file.bin', 'rb')
 I2PY_SWAP_ENDIAN = True
 file_unit = open('my_file.bin', 'rb')
 I2PY_SWAP_ENDIAN = Not_Same_Byte_Order(byte_order)
 file_unit = open('my_file.txt', 'r')
 I2PY_SWAP_ENDIAN = False
 
 #------------------------------------------
 # OPENU procedure tests (and SWAP_ENDIAN)
 #------------------------------------------
 file_unit = open('my_file.bin', 'rb+')
 I2PY_SWAP_ENDIAN = True
 file_unit = open('my_file.bin', 'rb+')
 I2PY_SWAP_ENDIAN = True
 file_unit = open('my_file.bin', 'rb+')
 I2PY_SWAP_ENDIAN = Not_Same_Byte_Order(byte_order)
 file_unit = open('my_file.txt', 'r+')
 I2PY_SWAP_ENDIAN = False
 
 #------------------------------------------
 # OPENW procedure tests (and SWAP_ENDIAN)
 #------------------------------------------
 file_unit = open('my_file.bin', 'wb')
 I2PY_SWAP_ENDIAN = True
 file_unit = open('my_file.bin', 'wb')
 I2PY_SWAP_ENDIAN = True
 file_unit = open('my_file.bin', 'wb')
 I2PY_SWAP_ENDIAN = Not_Same_Byte_Order(byte_order)
 file_unit = open('my_file.txt', 'w')
 I2PY_SWAP_ENDIAN = False
 
 #-----------------------------
 #  MAKE_ARRAY function tests
 #-----------------------------
 a = reshape(arange(2*3, dtype='Float64'), [3, 2])
 a = zeros([10], dtype='UInt8')
 a = empty([10], dtype='Int16')
 
 #----------------------------------
 #  DIALOG_PICKFILE function tests
 #----------------------------------
 sav_file = []
 app = wx.PySimpleApp()
 I2PY_dialog = wx.FileDialog(parent=None, defaultDir=os.getcwd(), defaultFile='myfile.sav', style=wx.SAVE, wildcard='(*.sav)|*.sav')
 if (I2PY_dialog.ShowModal() == wx.ID_OK):
     sav_file.append(I2PY_dialog.GetPath())
 I2PY_dialog.Destroy()
 
 #-------------------------
 #  CASE statement tests
 #-------------------------
 I2PY_expr = a + b       #(an expression)
 if (I2PY_expr == 0):    
     value = int16(0)
 elif (I2PY_expr == 1):    
     value = int16(1)
 else:    
     value = int16(2)
 
 #--------------------------
 if (TYPE == 'THIS'):    
     value = int16(0)
 elif (TYPE == 'THAT'):    
     value = int16(1)
 else:    
     value = int16(2)
 
 #--------------------------
 if (result == 0):    
     value = int16(0)
 elif (result == 1):    
     value = int16(1)
 else:    
     value = int16(2)
 
 
 #---------------------------
 #  PTR_NEW function tests
 #---------------------------
 a = float64(1)
 a = b
 a = int32(0)
 
 #----------------------------
 #  GET_LUN procedure tests
 #----------------------------
 # Note: Removed unneeded GET_LUN call from here.
 # Note: Removed unneeded GET_LUN call from here.
 
 #--------------------------
 #  Special variable tests
 #--------------------------
 start = time.time()
 dpi = numpy.pi
 fpi = nympy.pi
 _in = int16(20)
 _in = int16(20)
 _pow = int16(30)
 TYPE = 'DOUBLE'
 TYPE = 'FLOAT'
 print str(TYPE)
 print str(1)
 
 #-----------------------
 #  BYTE function tests
 #--------------------------------
 #  Python has ord() and chr().
 #--------------------------------
 b = idl_func.byte(257)    # should be 1
 b = idl_func.byte('a')    # should be 97
 b = idl_func.byte('abc')  # should be [97, 98, 99]
 
 #-------------------------------------
 #  BYTE function test (special case)
 #-------------------------------------
 big_endian = (sys.byteorder == 'big')
 
 #-------------------------------
 #  ONLINE_HELP procedure tests
 #-------------------------------
 filepath = '/Applications/TopoFlow/help/about_TF.htm'
 result = webbrowser.open('file://' + filepath)
 result = webbrowser.open('file://' + filepath)
 result = webbrowser.open('file://' + 'some_help_file.htm')
 # online_help, /quit  ;(not supported yet)
 
 #---------------------
 #  For loop tests
 #--------------------
 for k in xrange(n, -1, -1):
     print k
 #-------------------------------
 for k in xrange(n):
     print k
 #-------------------------------
 for k in xrange(n):
     print k
 #-------------------------------
 for k in xrange(int32(0), n):
     print k
 
 #----------------
 # Pointer tests
 #----------------
 w = where(T_air != T_surf)
 nw = size(w[0])
 #------------------------------------------------
 (var)[i[j]:(i[j + 1] - 1)+1] = v_by_layer[j]
 n = idl_func.n_elements(v[k])
 A = v[k]
 v2 = vol + dt * ((R * da) - Q)
 #------------------------------------------------
 a = (T_air * 5) + T_surf
 b = (c * d)
 B = (C * d)
 b = (c * d)
 b = (1 * d)
 b = (d + c)
 b = (1 + 5)
 b = (5 * 1)
 
 #-----------------------
 #  SIZE function tests
 #-----------------------
 s = idl_func.size(A, dimensions=True)
 s = idl_func.size(a, n_elements=True)
 s = idl_func.size(a, n_dimensions=True)
 s = idl_func.size(a, TYPE=True)
 #----------------------------------------------
 s = idl_func.size(a)
 
 #---------------------------------
 #  LOGICAL OR, AND and NOT tests
 #---------------------------------
 print logical_or(0, 1)
 print logical_and(0, 1)
 DONE = uint8(0)
 if not(DONE):    
     print 'Not done.'
 a = int16([0, 1, 0])
 b = int16([1, 1, 0])
 print (logical_or(a, b))
 print (logical_and(a, b))
 print (logical_and(a, logical_not(b)))
 print (logical_or(a, logical_not(b)))
 print logical_not(a)   #([-1,-2,-1]; caution)
 if (0):    
     print 'Hello'
 if (1):    
     print 'Hello'
 print (3 < 5)   #(= 1 in IDL, = True in Python)
 print (3 > 5)   #(= 0 in IDL, = False in Python)
 
 #-------------------------
 #  PTRARR function tests
 #-------------------------
 #p = ptrarr(2,2)
 
 #-------------------------
 #  STRARR function tests
 #-------------------------
 s = zeros([2, 2], dtype='|S100')
 s = zeros([5], dtype='|S100') 
 s.fill('this')   #*** Use s.fill()
 
 #-----------------------
 #  TV procedure tests
 #-----------------------
 matplotlib.pyplot.imshow(image, origin='upper')
 matplotlib.pyplot.show()
 
 #--------------------------
 #  CONTOUR procedure tests
 #--------------------------
 matplotlib.pyplot.contour(z, 10)
 matplotlib.pyplot.show()
 matplotlib.pyplot.contour(z, float32([100.0, 200.0, 300.0]))
 matplotlib.pyplot.show()
 matplotlib.pyplot.contour(z, my_levels)
 matplotlib.pyplot.show()
 matplotlib.pyplot.contourf(x, y, z)
 matplotlib.pyplot.show()
 matplotlib.pyplot.contour(x, y, z, 20)
 matplotlib.pyplot.axis('equal')
 matplotlib.pyplot.show()
 
 #--------------------------
 #  SURFACE procedure tests
 #--------------------------
 fig = matplotlib.pylab.figure()
 ax  = matplotlib.axes3d.Axes3DI(fig)
 (nx, ny) = numpy.shape(z)
 xv = numpy.linspace(0,nx-1,nx)
 yv = numpy.linspace(0,ny-1,ny)
 (xgrid, ygrid) = numpy.meshgrid(xv, yv)
 ax.plot_wireframe(xgrid, ygrid, z)
 matplotlib.pylab.show()
 #-----------------------------------------
 fig = matplotlib.pylab.figure()
 ax  = matplotlib.axes3d.Axes3DI(fig)
 ax.plot_wireframe(x, y, z)
 matplotlib.pyplot.xlabel('X')
 matplotlib.pyplot.ylabel('Y')
 matplotlib.pylab.show()
 
 #------------------------------
 #  SHADE_SURF procedure tests
 #------------------------------
 fig = matplotlib.pylab.figure()
 ax  = matplotlib.axes3d.Axes3DI(fig)
 (nx, ny) = numpy.shape(z)
 xv = numpy.linspace(0,nx-1,nx)
 yv = numpy.linspace(0,ny-1,ny)
 (xgrid, ygrid) = numpy.meshgrid(xv, yv)
 ax.plot_surface(xgrid, ygrid, z)
 matplotlib.pylab.show()
 #--------------------------------------------
 fig = matplotlib.pylab.figure()
 ax  = matplotlib.axes3d.Axes3DI(fig)
 ax.plot_surface(x, y, z)
 matplotlib.pyplot.xlabel('X')
 matplotlib.pyplot.ylabel('Y')
 matplotlib.pylab.show()
 
 #--------------------------
 #  PRINTF procedure tests
 #--------------------------
 file_unit.write(a, 1, 2 + "\n")
 I2PY_out_str = idl_func.string(a, 1, format='(F8.3, I3)')
 file_unit.write(I2PY_out_str + "\n")
 
 #--------------------------
 #  Line continuation tests
 #--------------------------
 if (THIS):    
     do_this = int16(1)
 else:    
     do_that = int16(1)
 #--------------------------
 f = my_function(a, b, c, d, e)
 
 #-----------------------------
 #  FILE_CHMOD function tests
 #-----------------------------
 os.chmod('my_file',755)
 
 #-------------------------
 #  SPAWN procedure tests
 #-------------------------
 os.system('notepad')
 
 #---------------------
 #  CD function tests
 #---------------------
 os.chdir(newdir)
 os.chdir(newdir)
 olddir = os.getcwd()
 curdir = os.getcwd()
 
 #--------------------------
 #  XYOUTS procedure tests
 #--------------------------
 matplotlib.pyplot.text(float32(1.5), float32(2.0), 'Hello')
 matplotlib.pyplot.text(float32(1.5), float32(2.0), 'Hello', color='r')
 matplotlib.pyplot.text(float32(0.4), float32(0.6), 'Hello', transform=ax.transAxes)
 #xyouts, 'Hello'  ;(unsupported case)
 
 #------------------------------
 #  PLOT_FIELD procedure tests
 #------------------------------
 matplotlib.pyplot.quiver(u, v, scale=float32(0.1))
 matplotlib.pyplot.title('Arrows!')
 
 #------------------------
 #  PLOT procedure tests
 #------------------------
 matplotlib.pyplot.plot(y)
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(x, y)
 matplotlib.pyplot.axes(axisbg='w')
 matplotlib.pyplot.axes((0, 0, 1, 1))
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(x, y)
 matplotlib.pyplot.title('Long. Profile Plot')
 matplotlib.pyplot.xlabel('Distance [km]')
 matplotlib.pyplot.ylabel('Elevation [m]')
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(x, y)
 matplotlib.pyplot.axis('equal')
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(x, y, marker='+', markersize=float32(2.0))
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(x, y, marker='d', linestyle='None', markersize=float32(2.0))
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(x, y, marker='None', linestyle='None', markersize=float32(0.5))
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.polar(theta, r)
 matplotlib.pyplot.show()
 matplotlib.pyplot.loglog(x, y)
 matplotlib.pyplot.show()
 matplotlib.pyplot.semilogx(x, y)
 matplotlib.pyplot.show()
 matplotlib.pyplot.semilogy(x, y)
 matplotlib.pyplot.show()
 matplotlib.pyplot.semilogy(y, linewidth=2)
 matplotlib.pyplot.show()
 matplotlib.pyplot.plot(x, y, color='b', linestyle='-.')
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(x, y)
 matplotlib.pyplot.xticks(numpy.linspace(x.min(), x.max(), 5))
 matplotlib.pyplot.yticks(numpy.linspace(y.min(), y.max(), 10))
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(float32[1.1, 2, 3], float32[1.1, 2, 3])
 matplotlib.pyplot.axis('image')
 matplotlib.pyplot.show()
 #-------------------------------------------------
 matplotlib.pyplot.plot(float32[1.1, 2, 3], float32[1.1, 2, 3])
 matplotlib.pyplot.axis('image')
 matplotlib.pyplot.axis('off')
 matplotlib.pyplot.show()
 
 #-------------------------
 #  WINDOW function tests
 #-------------------------
 matplotlib.pyplot.figure(1, figsize=(8, 6), dpi=80)
 matplotlib.pyplot.show()
 matplotlib.pyplot.figure(2, figsize=(500/80.0, 6), dpi=80)
 matplotlib.pyplot.show()
 matplotlib.pyplot.figure(2, figsize=(500/80.0, 300/80.0), dpi=80)
 matplotlib.pyplot.show()
 matplotlib.pyplot.figure(2, figsize=(nx/80.0, ny/80.0), dpi=80)
 matplotlib.pyplot.show()
 matplotlib.pyplot.figure(2, figsize=(8, 6), dpi=80)
 matplotlib.pyplot.show()
 matplotlib.pyplot.figure(2, figsize=(8, 6), dpi=80)
 matplotlib.pyplot.show()
 
 #--------------------------
 #  WDELETE function tests
 #--------------------------
 matplotlib.pyplot.close(1)
 matplotlib.pyplot.close(2)
 matplotlib.pyplot.close(3)
 matplotlib.pyplot.close(4)
 matplotlib.pyplot.close(n+1)
 
 #-----------------------
 #  WSET function tests
 #-----------------------
 matplotlib.pyplot.figure(1)
 matplotlib.pyplot.figure(2)
 matplotlib.pyplot.figure(n+1)
 
 #-------------------------
 #  BYTSCL function tests
 #-------------------------
 b = ((255 + 1) * (a - a.min()) - 1) / (a.max() - a.min())
 b = ((top + 1) * (a - amin) - 1) / (amax - amin)
 
 #--------------------------
 #  RANDOMN function tests
 #--------------------------
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.normal(loc=0.0, scale=1.0, size=None)
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.normal(loc=0.0, scale=1.0, size=(10))
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.normal(loc=0.0, scale=1.0, size=(4, 3))
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.binomial(5, 0.3, size=(4, 3))
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.gamma(scale=float32(2.0), size=(4, 3))
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.normal(loc=0.0, scale=1.0, size=(4, 3))
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.poisson(lam=float32(2.3), size=(4, 3))
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = random.uniform(low=0.0, high=1.0, size=(4, 3))
 #-----------------------------------------------
 if ('seed1' in locals()): numpy.random.seed(seed1)
 a = -5 + (random.uniform(low=0.0, high=1.0, size=(4, 3)) * 10)
 
 #--------------------------
 #  RANDOMU function tests
 #--------------------------
 #similar
 
 #--------------------------
 #  REFORM function tests
 #--------------------------
 #  NumPy also has SQUEEZE
 #--------------------------
 a = arange(24, dtype='Int16')
 b = reshape(a, [4, 6])  #(note reverse indices)
 c = reshape(b, [24])
 #-----------------------
 a = arange(24 * 3, dtype='Int16')
 b = reshape(a, [3, 4, 6])
 
 #-------------------------------------
 #  ROTATE and REVERSE function tests
 #-------------------------------------
 a = reshape(arange(3*4, dtype='Int16'), [4, 3])
 b = transpose(a)
 #-----------------
 b = a
 b = rot90(a, -1)
 b = rot90(a, -2)  ## Use FLIPUD to reverse 1D arrays
 b = rot90(a, -3)
 b = transpose(a)   #(same as transpose)
 b = fliplr(a)   #(flip x-axis)
 b = transpose(rot90(a, 2))
 b = flipud(a)   #(flip y-axis)
 #----------------
 a = arange(4, dtype='Int16')
 b = flipud(a)
 
 #--------------------------
 #  EXECUTE function tests
 #--------------------------
 a = 1  # (EXEC has no return value)
 exec("print, 'Hello'")
 a = 1  # (EXEC has no return value)
 exec("print, 'Hello' ;  a=1  ;  print, 'a =', a")   #(multiple statements)
 
 #------------------------
 #  SHIFT function tests
 #------------------------
 a = arange(5, dtype='Int16')     #[0,1,2,3,4]
 b = numpy.roll(a, 1, axis=0)   #[4,0,1,2,3]
 b = numpy.roll(a, -1, axis=0)  #[1,2,3,4,0]
 #--------------------------------------
 #  Note that array axes are reversed
 #--------------------------------------
 a = reshape(arange(3*4, dtype='Int16'), [4, 3])
 b = numpy.roll(a, 1, axis=1)
 b = numpy.roll(a, -1, axis=1)
 c = numpy.roll(a, 1, axis=0)
 c = numpy.roll(a, -1, axis=0)
 c = numpy.roll(numpy.roll(a, -1, axis=0), 1, axis=1)
 #--------------------------------------
 #   These 3D cases need more testing
 #--------------------------------------
 a = reshape(arange(3*4*5, dtype='Int16'), [5, 4, 3])
 c = numpy.roll(a, 1, axis=2)
 c = numpy.roll(a, 1, axis=1)
 c = numpy.roll(a, 1, axis=0)
 c = numpy.roll(numpy.roll(numpy.roll(a, 3, axis=0), 2, axis=1), 1, axis=2)   #(this case works)
 
 #---------------------------
 # REPLICATE function tests
 #---------------------------
 a = repeat('-',10)
 a = repeat(5,10)
 a = repeat(structure,10)
 
 #-----------------------
 # Array indexing tests
 #-----------------------
 print a[0:6]  #(note upper limit is adjusted)
 print a[0,:]  #(note reversed indices)
 
 #----------------------
 #  IF statement tests
 #----------------------
 if a < 5:    
     print 'a is smaller than 5'
 if (a < 5):    
     print 'a is smaller than 5'
 else:    
     print 'a is GE 5'
 
 #-----------------------
 # TOTAL function tests
 #-----------------------
 a = sum(b)
 a = sum(double(b))
 a = cumsum(b)
 a = cumsum(b)
 a = cumsum(double(b))
 a = cumsum(double(b))
 a = nansum(double(b))
 a = nansum(b)
 a = cumsum(nan_to_num(b))   #(there is no "nancumsum")
 
 #---------------------------
 # Deliberate casting tests
 #---------------------------
 a = uint8(0)
 a = int32(0)
 a = float64(0)
 a = float32(0.0)
 a = int64(0)
 a = uint16(0)
 a = uint64(0)
 a = 0x15
 
 #----------------------------
 # POINT_LUN procedure tests
 #----------------------------
 file_unit.seek((nx * 5))     #(set position)
 pos = file_2.tell()            #(return position)
 pos = file_unit.tell()   #(return position)
 
 #------------------------
 #  FSTAT function tests
 #------------------------
 file_unit1 = open('my_filename.txt', 'r')
 I2PY_SWAP_ENDIAN = False
 temp = idl_func.fstat(file_unit1)
 filesize = temp.size
 file_unit1.close()
 
 #----------------
 # File I/O tests
 #----------------
 file_unit = open('my_filename.txt', 'rb')
 I2PY_SWAP_ENDIAN = True
 a = zeros([5, 5], dtype='Int16')
 I2PY_shape = a.shape
 I2PY_dtype = str(a.dtype)
 a = fromfile(file_unit, count=size(a), dtype=I2PY_dtype)
 a = reshape(a, I2PY_shape)
 if (I2PY_SWAP_ENDIAN):
     array(a, copy=0).byteswap(True)
 
 #---------------------------------------
 #  CLOSE and FREE_LUN procedure tests
 #---------------------------------------
 file_3.close()
 file_unit.close()
 file_unit1.close()
 file_unit2.close()
 #------------------------
 file_3.close()
 file_unit.close()
 file_unit1.close()
 file_unit2.close()
 file_unit3.close()
 
 #--------------------------------
 #  FILE_DELETE procedure tests
 #--------------------------------
 idl_func.file_delete('dirname/my_filename.txt')
 a = '/dir1/dir2/my_file.txt'
 idl_func.file_delete(a)
 idl_func.file_delete(a, b, c)
 
 #-----------------------------
 #  FILE_TEST function tests
 #-----------------------------
 exists = os.path.exists('dirname/my_filename.txt')
 
 #---------------------
 # EOF function tests
 #---------------------
 while not(idl_func.eof(file_unit)):
     I2PY_shape = a.shape
     I2PY_dtype = str(a.dtype)
     a = fromfile(file_unit, count=size(a), dtype=I2PY_dtype)
     a = reshape(a, I2PY_shape)
     if (I2PY_SWAP_ENDIAN):
         array(a, copy=0).byteswap(True)
 
 #-------------------------
 #  Type conversion tests
 #-------------------------
 a = arange(5, dtype='Int16')
 a = float32(a)
 g = idl_func.byte(257)   #should be 1.  ( Python has ord() and chr(). )
 g = int16(float32(1.5))    #should be 1
 g = float32(1)    #should be 1.0
 
 #-------------------------------
 #  Array initialization tests
 #-------------------------------
 B_arr = zeros([5], dtype='UInt8')
 I_arr = zeros([5, 3], dtype='Int16')   #(note reversed indices)
 L_arr = zeros([5], dtype='Int32')
 F_arr = zeros([5], dtype='Float32')
 D_arr = zeros([5], dtype='Float64')
 #-----------------------------
 B_arr = empty([5], dtype='UInt8')
 I_arr = empty([5, 3], dtype='Int16')
 L_arr = empty([5], dtype='Int32')
 F_arr = empty([5], dtype='Float32')
 D_arr = empty([5], dtype='Float32')
 
 #----------------------
 #  Array "ramp" tests
 #----------------------
 a = arange(5, dtype='Float32')
 a = reshape(arange(3*5, dtype='Float32'), [5, 3])
 a = reshape(arange(3*5*8, dtype='Float32'), [8, 5, 3])
 a = arange(5, dtype='UInt8')
 a = arange(5, dtype='Int16')
 a = arange(5, dtype='Int32')
 a = arange(5, dtype='Float64')
 
 #------------------------------
 #  MIN and MAX function tests
 #------------------------------
 amin = a.min()
 #------------------------
 amin = a.min()
 amin_sub = a.argmin()
 #------------------------
 amin = a.min()
 amin_sub = a.argmin()
 amax = a.max()
 #------------------------
 amin = a.min()
 amin_sub = a.argmin()
 amax = a.max()
 amax_sub = a.argmax()
 #------------------------
 amin = a.min()
 amin_sub = a.argmin()
 amax = a.max()
 amax_sub = a.argmax()
 #------------------------
 amax = a.max()
 #------------------------
 amax = a.max()
 amax_sub = a.argmax()
 amin = a.min()
 amin_sub = a.argmin()
 #------------------------
 amax = a.max()
 amax_sub = a.argmax()
 amin = a.min()
 amin_sub = a.argmin()
 
 #------------------------
 #  WHERE function tests
 #------------------------
 a[where(a < 0)] = int16(0)
 #----------------------------------------
 a[where(a < 0)
 wc = where(invert(a < 0))
 nc = size(wc[0])] = int16(0)    #(doesn't work yet)
 #----------------------------------------
 w = where(a < 10)
 #--------------------------
 w = where(a < 10)
 nw = size(w[0])
 #--------------------------
 w = where(a < 10)
 nw = size(w[0])
 wc = where(invert(a < 10))
 nc = size(wc[0])
 #-------------------------------------------
 # These have arguments with an equals sign
 #-------------------------------------------
 w = where(a == 10)
 w = where(a <= 10)
 w = where(a >= 10)
 w = where(a != 10)
 #-------------------------
 # "Nested" WHERE example
 #-------------------------
 a = reshape(arange(4*4, dtype='Int16'), [4, 4]) - 8
 w1 = where(a < 0)
 w2 = where(a[w1] > -3)
 a[w1[w2]] = int16(99)
 
 #-----------------------
 #  ATAN function tests
 #-----------------------
 a = arctan(x)
 a = arctan2(x,y)
 
 #---------------------------
 #  STRSPLIT function tests
 #---------------------------
 s = ' Parse this sentence.'
 words = s.split()
 words = s.split()
 words = s.split()
 my_count = len(words)
 words = s.split()
 my_length = map(len, words)
 #-------------------------------------
 indices = [j for j in xrange(len(s)) if (ord(s[j]) > 32) and ((j==0) or ((j>0) and (ord(s[j-1]) < 33)))]
 indices = [j for j in xrange(len(s)) if (ord(s[j]) > 32) and ((j==0) or ((j>0) and (ord(s[j-1]) < 33)))]
 s.split()
 my_count = len(indices)
 my_length = map(len, indices)
 #-------------------------------------
 dstr = '1,2,3,4,5,'
 data = dstr.split(',')
 indices = [j for j in xrange(len(dstr)) if (dstr[j] not in ',') and ((j==0) or ((j>0) and (dstr[j-1] in ',')))]
 
 #---------------------------
 #  STRTRIM function tests
 #---------------------------
 name = '   Scott   '.rstrip()
 name = '   Scott   '.rstrip()
 name = '   Scott   '.lstrip()
 name = '   Scott   '.strip()
 name = '   Scott   '.rstrip()
 
 #-----------------------------
 #  String manipulation tests
 #-----------------------------
 word = s[4:4+3]
 word = 'the red fox'[4:4+3]   #(should be 'red')
 s = 'the red fox'
 s = (s[:8] + 'dog' + s[8+len('dog'):])[:len(s)]
 s = ('dog' + s[len('dog'):])[:len(s)]
 _len = len('this')
 name = 'Scott'.upper()
 name = 'Scott'.lower()
 print 'path separator = ' + os.sep