Bug fixe: issue when launching contactmaplot on erc cluster (Tk error)

ariaec/conf/aria_ec.ini

@@ -126,7 +126,7 @@ whatif_executable:                          whatif
 ; Plot settings
 n_factor:                                   1.5
 groupby_method:                             min
-save_fig:                                   False
+save_fig:                                   True
 size_fig:                                   10
 plot_ext:                                   pdf
 plot_dpi:                                   200

ariaec/protmap.py

@@ -9,6 +9,8 @@ import os
 # sys.path.insert(0, ariapath)
 
 import re
+import matplotlib
+matplotlib.use("pdf", warn=False)
 import logging
 import collections
 import itertools
@@ -16,7 +18,7 @@ import operator
 import pandas as pd
 import seaborn as sns
 import numpy as np
-import matplotlib.pyplot as plt
+from matplotlib import pyplot as plt
 import aria.ConversionTable as ConversionTable
 import aria.legacy.AminoAcid as AminoAcid
 from matplotlib.lines import Line2D