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Make Z_0 label position configurable #39

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Make Z_0 label position configurable #39

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6 changes: 5 additions & 1 deletion smithplot/smithaxes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,7 @@ class SmithAxes(Axes):
"axes.ylabel.correction": (-1, 0, 0),
"axes.radius": 0.44,
"axes.impedance": 50,
"axes.labelpos": -1-1j,
"axes.normalize": True,
"axes.normalize.label": True,
"symbol.infinity": "∞ ", # BUG: symbol gets cut off without end-space
Expand Down Expand Up @@ -304,6 +305,9 @@ def update_scParams(sc_dict=None, instance=None, filter_dict=False, reset=True,
Defines the reference impedance for normalisation.
Accepts: float

axes.labelpos: -1-1j
Position of normalization label, see axes.normalize.label

axes.normalize: True
If True, the Smith Chart is normalized to the reference impedance.
Accepts: boolean
Expand Down Expand Up @@ -466,7 +470,7 @@ def dummy(*args, **kwargs):
self.xaxis.set_major_formatter(self.RealFormatter(self))

if self._get_key("axes.normalize") and self._get_key("axes.normalize.label"):
x, y = z_to_xy(self._moebius_inv_z(-1 - 1j))
x, y = z_to_xy(self._moebius_inv_z(self._get_key("axes.labelpos")))
box = self.text(x, y, "Z$_\mathrm{0}$ = %d$\,$%s" % (self._impedance, self._get_key("symbol.ohm")), ha="left", va="bottom")

px = self._get_key("ytick.major.pad")
Expand Down