Y axis svg

python/CHANGELOG.rst

@@ -4,6 +4,10 @@
 
 **Features**
 
+- SVG visualization plots mutations at the correct time, if it exists, and a y-axis,
+  with label can be drawn. Both x- and y-axes can be plotted on trees as well as
+  tree sequences (:user:`hyanwong`,:issue:`840`, :issue:`580`, :pr:`1236`)
+
 - SVG visualization now uses squares for sample nodes and red crosses for mutations,
   with the site/mutation positions marked on the x-axis. Additionally, an x-axis
   label can be set (:user:`hyanwong`,:issue:`1155`, :issue:`1194`, :pr:`1182`, :pr:`1213`)

python/tests/conftest.py

@@ -58,6 +58,12 @@ def pytest_addoption(parser):
         default=False,
         help="Overwrite the expected viz files in tests/data/svg/",
     )
+    parser.addoption(
+        "--draw-svg-debug-box",
+        action="store_true",
+        default=False,
+        help="To help debugging, draw lines around the plotboxes in SVG output files",
+    )
 
 
 def pytest_configure(config):
@@ -80,6 +86,11 @@ def overwrite_viz(request):
     return request.config.getoption("--overwrite-expected-visualizations")
 
 
+@fixture
+def draw_plotbox(request):
+    return request.config.getoption("--draw-svg-debug-box")
+
+
 @fixture(scope="session")
 def simple_ts_fixture():
     return msprime.simulate(10, random_seed=42)