From af7fb17607e9d6ff07dd3f2d1efa8fc0ce099433 Mon Sep 17 00:00:00 2001
From: Philippe Teuwen <phil@teuwen.org>
Date: Fri, 21 Feb 2020 16:10:18 +0100
Subject: [PATCH] plotedge script: warn for numpy, matplotlib

---
 fpga/tests/plot_edgedetect.py | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/fpga/tests/plot_edgedetect.py b/fpga/tests/plot_edgedetect.py
index d5bb34991..63925bd99 100755
--- a/fpga/tests/plot_edgedetect.py
+++ b/fpga/tests/plot_edgedetect.py
@@ -6,9 +6,19 @@
 # at your option, any later version. See the LICENSE.txt file for the text of
 # the license.
 #-----------------------------------------------------------------------------
-import numpy
-import matplotlib.pyplot as plt
+
 import sys
+try:
+    import numpy
+except ModuleNotFoundError:
+    print("Please install numpy module first.")
+    sys.exit(1)
+
+try:
+    import matplotlib.pyplot as plt
+except ModuleNotFoundError:
+    print("Please install matplotlib module first.")
+    sys.exit(1)
 
 if len(sys.argv) != 2:
     print("Usage: %s <basename>" % sys.argv[0])