def plot(xx, yy, target, label, figfiles, figfile, lon=None, lat=None, show=False):
    xs, ys, mask = coord2slice(target, lon=lon, lat=lat)
    P.figure(figsize=(6, 3.5))
    P.title('Target=%(label)s / select: lon=%(lon)s, lat=%(lat)s'%locals())
    add_grid((xx, yy))
    xx = xx.asma()
    yy = yy.asma()
    if isinstance(lon, tuple): 
        P.axvline(lon[0], color='m', ls='--', lw=2)
        P.axvline(lon[1], color='m', ls='--', lw=2)
    elif isinstance(lon, slice):
        i, j, k = lon.indices(xx.shape[1])
        P.plot(xx[:, i], yy[:, i], 'c--', lw=2)
        P.plot(xx[:, j-1], yy[:, j-1], 'c--', lw=2)
    if isinstance(lat, tuple): 
        P.axhline(lat[0], color='m', ls='--', lw=2)
        P.axhline(lat[1], color='m', ls='--', lw=2)
    elif isinstance(lat, slice):
        i, j, k = lat.indices(yy.shape[0])
        P.plot(xx[i], yy[i], 'c--', lw=2)
        P.plot(xx[j-1], yy[j-1], 'c--', lw=2)
    P.xticks(N.arange(xx.min()-1, xx.max()+1))
    P.yticks(N.arange(yy.min()-1, yy.max()+1))
    xxi, yyi = xx, yy
    xx = xx[ys, xs]
    yy = yy[ys, xs]
#    mask = mask[ys, xs]
    xxb, yyb = meshbounds(xx, yy)
    P.pcolor(xxb, yyb, mask, shading='faceted')
    P.scatter(xx.ravel(), yy.ravel(), c=(0, 1, 0))
    P.grid('on')
    P.axis('image')
    P.tight_layout()
    i = len(figfiles)
    savefig = figfile%i
    if os.path.exists(savefig): os.remove(savefig)
    P.savefig(savefig)
    figfiles.append(savefig)
    if show: P.show()
    else: P.close()
    P.grid('on')
    P.axis('image')
    P.tight_layout()
    i = len(figfiles)
    savefig = figfile%i
    if os.path.exists(savefig): os.remove(savefig)
    P.savefig(savefig)
    figfiles.append(savefig)
    if show: P.show()
    else: P.close()
    
result = []
    
# 1D axis
lon1d = create_lon((0, 10))
result.append(('AssertEqual', (coord2slice(lon1d, lon=(2.5, 4., 'cc')), slice(3, 5, 1))))
result.append(('AssertEqual', (coord2slice(lon1d, lon=(2.5, 4., 'ccb')), slice(2, 5, 1))))
result.append(('AssertEqual', (coord2slice(lon1d, lon=slice(3, 6)), slice(3, 6, None))))
result.append(('AssertEqual', (coord2slice(lon1d, lat=(6, 8)), slice(0, 10, 1))))
result.append(('AssertEqual', (coord2slice(lon1d, lon=(60, 70)), None)))

# Rect grid
grid = create_grid((0, 10.), (20, 30.))
result.append(('AssertEqual', (coord2slice(grid, lon=(0., 3.5), lat=slice(3, 5)), 
    (slice(0, 4, 1), slice(3, 5, None), None))))
result.append(('AssertEqual', (coord2slice(grid, lat=(21,21, 'ccb')),
    (slice(0, 10, 1), slice(1, 2, 1), None))))

# 2D axis
lon2d = N.empty((10, 10.))
for i in xrange(10):