From d2b5eb2b43f746a13f307a03538eb5f4abec837b Mon Sep 17 00:00:00 2001
From: Luke <git@luke.fastmail.us>
Date: Wed, 1 Aug 2018 13:40:10 -0700
Subject: [PATCH] Minor styling changes

---
 LPRDefaultPlotting.py | 10 ++++++++++
 parsePy.py            |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/LPRDefaultPlotting.py b/LPRDefaultPlotting.py
index 071b661..641bcf0 100644
--- a/LPRDefaultPlotting.py
+++ b/LPRDefaultPlotting.py
@@ -121,3 +121,13 @@ def figAnnotateClear(hobj):
 	for child in children:
 		if type(child) == matplotlib.text.Text:
 			child.remove()
+
+def annotateArrow(ha, y, x_list, direction='right'):
+	x=[min(x_list), max(x_list)]
+	if direction == 'right':
+		x=[x[-1], x[0]]
+
+	ha.annotate("",
+		xy=(x[0], y), xycoords='data',
+		xytext=(x[1], y), textcoords='data',
+		arrowprops=dict(width=2, headwidth=8, headlength=6, facecolor='black'))
diff --git a/parsePy.py b/parsePy.py
index 24f08e8..db0f260 100755
--- a/parsePy.py
+++ b/parsePy.py
@@ -279,6 +279,9 @@ for filename in os.listdir(source_directory):
 			# Recall that the ylimits should be 0-360 basically.
 			aT.set_ylabel('RMS Error (deg)')
 			aT.plot(imeas.f, ang_rms)
+			marker_freq = 27.5
+			marker_point = np.argmin(np.abs(imeas.f-marker_freq))
+			marker_height = ang_rms[marker_point]
 
 			# The goal is to take the usual step size of 50,
 			# and then equate that with a 1-degree step in RMS Error
@@ -304,6 +307,8 @@ for filename in os.listdir(source_directory):
 			aT.get_lines()[0].set_linewidth(2.0)
 			aT.get_lines()[0].set_linestyle('-.')
 			aT.get_lines()[0].set_color('black')
+			LPRDefaultPlotting.annotateArrow(aT, marker_height, \
+				[marker_freq+0.05, marker_freq+0.25])
 		for aT in ax:
 			aT.set_xlabel('Frequency (GHz)')
 			aT.grid()