Fix deprecated tight layout matplotlib

Author: yannikschaelte

petab/visualize/plotter.py

@@ -362,7 +362,7 @@ def generate_figure(
 
             fig, axes = plt.subplots(num_row, num_col, squeeze=False,
                                      figsize=self.figure.size)
-            fig.set_tight_layout(True)
+            fig.set_layout_engine("tight")
 
             for ax in axes.flat[self.figure.num_subplots:]:
                 ax.remove()
@@ -373,7 +373,7 @@ def generate_figure(
         for subplot in self.figure.subplots:
             if subplot_dir is not None:
                 fig, ax = plt.subplots(figsize=self.figure.size)
-                fig.set_tight_layout(True)
+                fig.set_layout_engine("tight")
             else:
                 ax = axes[subplot.plotId]
 

setup.py

@@ -58,7 +58,7 @@ def absolute_links(txt):
       packages=find_packages(exclude=['doc*', 'test*']),
       install_requires=['numpy>=1.15.1',
                         'pandas>=1.2.0',
-                        'matplotlib>=3.5.0',
+                        'matplotlib>=3.6.0',
                         'python-libsbml>=5.17.0',
                         'sympy',
                         'colorama',