From 3c372e344bedc3de10cc949d285bd7a66dfe1aad Mon Sep 17 00:00:00 2001
From: Aaron LI <aaronly.me@outlook.com>
Date: Thu, 16 Feb 2017 19:31:59 +0800
Subject: Add module ds9.py for easier image viewing

---
 scripts/ds9.py | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 scripts/ds9.py

diff --git a/scripts/ds9.py b/scripts/ds9.py
new file mode 100644
index 0000000..af25a42
--- /dev/null
+++ b/scripts/ds9.py
@@ -0,0 +1,27 @@
+# Copyright (c) 2017 Weitian LI <liweitianux@live.com>
+# MIT license
+
+"""
+Wrapper function to view FITS files using DS9.
+"""
+
+import subprocess
+
+
+def ds9_view(filename, regfile=None, regformat="ciao", regsystem="physical",
+             cmap="he", binfactor=2, scale="linear", smooth=None):
+    """
+    Wrapper function to view FITS files using DS9.
+    """
+    cmd = [
+        "ds9", filename,
+        "-regions", "format", regformat,
+        "-regions", "system", regsystem,
+        "-regions", regfile,
+        "-cmap", cmap,
+        "-bin", "factor", binfactor,
+        "-scale", scale,
+    ]
+    if smooth:
+        cmd += ["-smooth", "yes", "-smooth", "radius", smooth]
+    subprocess.check_call(cmd)
-- 
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