cs.collections error

[DaveG]

This is the script up to the problem line. All the variables look good up to the error point. I'm assuming cs.collections is a function of Matplotlib, would it be that that function is missing from my environment?

from scipy import *
from pylab import *
from numpy import *
import sys
from degrees2utm import latlng2utm
from copy import deepcopy
from matplotlib.patches import PathPatch

#close('all')

# =================================================================================
#                       INPUT SECTION BEGIN
# =================================================================================

meshfile='Caldera_Before.xyz' # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
collapse_duration = 60.0 # in seconds
collapse_depth = -480    # depth of the filling cup

meshfile_start='Caldera_Output.xyz' # file with output
file_ls = "collapse.xyt" # file with displacement


# =================================================================================
#                       INPUT SECTION END
# =================================================================================
#utm_grid = True
print('reading mesh file data; might take some time')
data=genfromtxt(meshfile)

nx = 88 # dimensions of the mesh file
ny = 84

elevation=data[:, 2]
xx=data[:, 0]
yy=data[:, 1]

elevation=elevation.reshape((ny, nx)) # bathymetry/topography
xx=xx.reshape((ny, nx))
yy=yy.reshape((ny, nx))


cmax=500 # color scale
lmin=0 # cutting from east 
lmax=88 # cutting from west
rmin=0 # north of santorini
rmax=84 # south of santorini

###### kolumbo data
kxx=xx[rmin:rmax, lmin:lmax]
kyy=yy[rmin:rmax, lmin:lmax]
kelevation=elevation[rmin:rmax, lmin:lmax]

################################################## collapse bathymetry data
collapse_steps = 2 # can be changed by USER
collapse_starttime = 0.0 # in second; can be changed by USER
collapse_times = linspace(0, collapse_duration, collapse_steps)
cs = contour(kxx, kyy, -kelevation, [collapse_depth])
csp = cs.collections[0].get_paths()[2]  # path
csv = csp.vertices # vertices
csv_x = csv[:, 0]
csv_y = csv[:, 1]

if (not plot_debugfig):
    close()