plotting init bugfix

tfields/plotting/__init__.py

@@ -111,7 +111,7 @@ class PlotOptions(object):
             vmin = min(scalars)
             self.plotKwargs['vmin'] = vmin
         if vmax is None:
-            vmax = min(scalars)
+            vmax = max(scalars)
             self.plotKwargs['vmax'] = vmax
 
     def getNormArgs(self, vminDefault=0, vmaxDefault=1, cmapDefault=None):
@@ -128,8 +128,8 @@ class PlotOptions(object):
         Args:
             colors (list/one value of rgba tuples/int/float/str): This argument will
                 be interpreted as color
-            fmt (str): rgba / norm
-            length (int/None): if not None: corrct colors lenght
+            fmt (str): rgba | hex | norm
+            length (int/None): if not None: correct colors lenght
     
         Returns:
             colors in fmt
@@ -165,6 +165,11 @@ class PlotOptions(object):
                                    vmin=vmin,
                                    vmax=vmax,
                                    cmap=cmap)
+        elif fmt == 'hex':
+            colors = [mpl.colors.to_hex(color) for color in colors]
+        else:
+            raise NotImplementedError("Color fmt {fmt} not implemented."
+                                      .format(**locals()))
     
         if length is not None:
             # just one colors value given