add png, latex fix

Author: pancetta

.travis.yml

@@ -30,7 +30,7 @@ install:
   - conda list
   - pip install --user coloredlogs
   - pip install --user travis-sphinx
-  - sudo apt-get install -y texlive-latex-recommended
+  - sudo apt-get install -y texlive-latex-recommended texlive-fonts-recommended
 
 script:
   - ./docs/update_apidocs.sh

projects/parallelSDC/newton_vs_sdc.py

@@ -165,6 +165,7 @@ def plot_graphs(cwd=''):
 
     assert os.path.isfile(fname + '.pdf'), 'ERROR: plotting did not create PDF file'
     assert os.path.isfile(fname + '.pgf'), 'ERROR: plotting did not create PGF file'
+    assert os.path.isfile(fname + '.png'), 'ERROR: plotting did not create PNG file'
 
 
 if __name__ == "__main__":

projects/parallelSDC/nonlinear_playground.py

@@ -176,6 +176,7 @@ def plot_graphs():
 
     assert os.path.isfile(fname + '.pdf'), 'ERROR: plotting did not create PDF file'
     assert os.path.isfile(fname + '.pgf'), 'ERROR: plotting did not create PGF file'
+    assert os.path.isfile(fname + '.png'), 'ERROR: plotting did not create PNG file'
 
 
 if __name__ == "__main__":

projects/parallelSDC/preconditioner_playground.py

@@ -238,7 +238,7 @@ def plot_iterations():
 
         assert os.path.isfile(fname + '.pdf'), 'ERROR: plotting did not create PDF file'
         assert os.path.isfile(fname + '.pgf'), 'ERROR: plotting did not create PGF file'
-
+        assert os.path.isfile(fname + '.png'), 'ERROR: plotting did not create PNG file'
 
 if __name__ == "__main__":
     # main()

pySDC/helpers/plot_helper.py

@@ -60,3 +60,4 @@ def newfig(textwidth, scale):
 def savefig(filename):
     plt.savefig('{}.pgf'.format(filename), rasterized=True, bbox_inches='tight')
     plt.savefig('{}.pdf'.format(filename), rasterized=True, bbox_inches='tight')
+    plt.savefig('{}.png'.format(filename), rasterized=True, bbox_inches='tight')