def calculate_surface_features(temp_ascii_dem, input_array, output_srf, window_size, window_count, window_step, output_text_file):
# Now export the final DEM to an Arc ASCII format
LB_ArrayUtils.writeArrayToFile(temp_ascii_dem, input_array, "Float", "E", 1)
print ("writing file to %s" % temp_ascii_dem)
# Construct a command string for Landserf
#java_comm = "java -classpath .%s../../../lib/landserf/landserf230.jar%s../../../lib/landserf/utils230.jar RandomSurface" % (os.pathsep, os.pathsep)
java_comm = "java -classpath .%slib/landserf/landserf230.jar%slib/landserf/utils230.jar RandomSurface" % (os.pathsep, os.pathsep)
print "Java command is:"
# NB - for Windows a semi-colon is needed, rather than a colon :-(
# Append space and input file name
java_command = "%s \"%s\" \"%s\" %d %d %d \"%s\"" % (java_comm, temp_ascii_dem, output_srf, window_size, window_count, window_step, output_text_file)
print java_command
# cd to java directory
savedPath = os.getcwd()
newPath = "%s/java" % savedPath
os.chdir(newPath)
# run java
os.system(java_command)
os.chdir(savedPath)
##for i in range(1,(erosion_runs+1)):
##
## newDEM = Hydro_Network.RiverNetwork(erodedDEMs[i-1], generated_DEMs, i, variables['river_drop'])
## erodedDEMs.append(newDEM)
##
### Now we should have the whole sequence of erosions - let's save them and see how it looks
##pylab.imsave("Output/DEM_before_erosion",erodedDEMs[0])
##for i in range(1,erosion_runs):
## erodedDEMname = "Output/DEM_input%d" % i
## pylab.imsave(erodedDEMname,erodedDEMs[i])
i = 0
# TODO remove the line above for full runs
# Now export the final DEM to an Arc ASCII format
LB_ArrayUtils.writeArrayToFile(variables['ascii_dem'], erodedDEMs[i], "Float", "E", 1)
print "writing file to %s" % variables['ascii_dem']
# Construct a command string for Landserf
# input file = the DEM that was just written out
# output file = qualifiedparams['output_csv']
# window size = variables['window_size']
# java_comm = "java -classpath .:~/src/rdv-framework/lib/landserf/landserf230.jar:~/src/rdv-framework/lib/landserf/utils230.jar RandomSurface"
java_comm = "java -classpath .;../../../lib/landserf/landserf230.jar;../../../lib/landserf/utils230.jar RandomSurface"
# Append space and input file name TODO
java_command = "%s ../%s ../%s %d ../%s" % (java_comm, variables['ascii_dem'], variables['output_features'], variables['window_size'],variables['landserf_output'])
# java_command += qualifiedparams['ascii_dem']
#java_command += qualifiedparams['output_features']
# java_command += variables['window_size']