fix reading of single-string settings in gui (thanks Salvador Salazar…

… and Francesco Montesano)

getdist/gui/mainwindow.py

@@ -109,6 +109,8 @@ def __init__(self, app, ini=None, base_dir=None):
 
         if Dirs is None and lastDir:
             Dirs = [lastDir]
+        elif isinstance(Dirs, six.string_types):
+            Dirs = [Dirs]  # Qsettings doesn't save single item lists reliably
         if Dirs is not None:
             Dirs = [x for x in Dirs if os.path.exists(x)]
             self.listDirectories.addItems(Dirs)

getdist/plots.py

@@ -1755,7 +1755,7 @@ def triangle_plot(self, roots, params=None, legend_labels=None, plot_3d_with_par
         :param legend_ncol: The number of columns for the legend
         :param legend_loc: The location for the legend
         :param upper_roots: set to fill the upper triangle with subplots using this list of sample root names 
-                             (TODO: this needs some work easily without a lot of tweaking)
+                             (TODO: this needs some work to easily work without a lot of tweaking)
         :param upper_kwargs: list of dict for arguments when making upper-triangle 2D plots
         :param kwargs: optional keyword arguments for :func:`~GetDistPlotter.plot_2d` or :func:`~GetDistPlotter.plot_3d` (lower triangle only)
         
@@ -2059,7 +2059,7 @@ class sampleNames(object): pass
 
     def add_2d_scatter(self, root, x, y, color='k', alpha=1, extra_thin=1, scatter_size=None, ax=None):
         """
-        Adds a 2D sample scatter plot to the current axes (or ax if specified).
+        Low-level function to adds a 2D sample scatter plot to the current axes (or ax if specified).
 
         :param root: The root name of the samples to use
         :param param1: name of x parameter
@@ -2077,7 +2077,7 @@ def add_2d_scatter(self, root, x, y, color='k', alpha=1, extra_thin=1, scatter_s
 
     def add_3d_scatter(self, root, params, color_bar=True, alpha=1, extra_thin=1, scatter_size=None, ax=None, **kwargs):
         """
-        Adds a 3D scatter plot to the current axes (or ax if specified).
+        Low-level function to add a 3D scatter plot to the current axes (or ax if specified).
 
         :param root: The root name of the samples to use
         :param params:  list of parameters to plot