Select your symbols by either clicking them individually whilst holding Ctrl or click the uppermost symbol, hold Shift and click the last symbol you want selected. Then go to Symbol > Change:
Then select your fill and set the border style:
When you click OK, the selected symbols should be updated with the new border properties:
To keep your ...
This is a bug, BUG-000087293, apparently fixed in ver 10.5, see this similar question:
ApplySymbologyFromLayer_management sets polygon outlines to default
Unfortunately there is no arcpy workaround for previous versions, although a less-than-direct temp solution may be to save class breaks in separate layer files (thereby circumventing the arcpy command to ...
This is a bit of python that does the trick. That layer-renderer-symbol-symbollayer thing is a bit weird at first sight, but ok.
from PyQt4.QtGui import QColor
r = iface.activeLayer().rendererV2()
for s in r.symbols():
Just tested this on the console and it works for ...
According to your previous question (Changing thickness of outline in QGIS), it looks like you have changed layer rendering blending mode.
Change Layer blending mode in Layer rendering section in symbol preperties to Normal
You can change the fill type of the polygon to by Gradient Fill Symbol in the Symbol Property Editor when you click on the Edit Symbol... button in the Symbol Selector window. Change the Style of the gradient from Linear to Buffered and it should do what you are asking.
From there you can change the Colour Ramp to be no colour to whatever colour you wish. ...
Use circleMarkers instead of circles. They stay the same size when you zoom in or out as they are measured in screen pixals instead of meters on the ground. Here is an example.
I've been communicating back and forth with ESRI and they finally came up with an answer: it seems to be a bug in the arcpy API, which shall be fixed with ArcGIS 10.5 (pre-release already available). As soon as I can confirm this, I will post it here. From what ESRI told me, there is no workaround for versions lower than 10.5 except for manual adjustment.