#set_exec_pars(format="txt")
data2d = [ [1.0, 2.0, 3.0, 4.0, 5.0],  [2.0, 3.0, 4.0, 5.0, 6.0, ],  [3.0, 4.0, 5.0, 6.0, 7.0]]


path = "group/data4"
create_dataset(path, 'd', False, (0,0))
for row in data2d:
    append_dataset(path, row)    
read =load_data(path)
print read.tolist()
plot(read)
set_return(True)