polezero plot

2 files changed, 108 insertions, 0 deletions

diff --git a/gr-input/grc/plzr_plot.xml b/gr-input/grc/plzr_plot.xml
new file mode 100644
index 000000000..833149ea5
--- /dev/null
+++ b/gr-input/grc/plzr_plot.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0"?>
+<block>
+  <name>plzr_plot</name>
+  <key>plzr_plot</key>
+  <category>Python_Blocks</category>
+  <import>import gnuradio.plzr_plot</import>
+  <make>gnuradio.plzr_plot.plzr_plot($order)</make>
+
+<param>
+   <name>Order of transfer function</name>
+   <key>order</key>
+   <value>1</value>
+   <type>real</type>
+
+</param>
+
+
+
+  <sink>
+    <name>in</name>
+    <type>float</type>
+    <nports>2</nports>
+  </sink>
+</block>
+<!--
+  <sink>
+  <name>in1</name>
+  <type>float</type>
+  <nports>4</nports>
+  </sink> 
+
+ 
+  <source>
+    <name>in</name>
+    <type>float</type>
+  </source>
+</block>-->
diff --git a/gr-input/python/plzr_plot.py b/gr-input/python/plzr_plot.py
new file mode 100644
index 000000000..e1b0ff3fc
--- /dev/null
+++ b/gr-input/python/plzr_plot.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python
+# 
+# Copyright 2015 <+YOU OR YOUR COMPANY+>.
+# 
+# This is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this software; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+import sys
+import time
+import numpy
+from gnuradio import gr
+import sciscipy
+
+class plzr_plot(gr.sync_block):
+    """
+    docstring for block add_python
+    """
+    def __init__(self,order):
+	sys.setrecursionlimit(2000)
+	a = []
+#	self.flag = 0
+	self.b = [0,0,0,0,0,0]
+	self.c = [0,0,0,0,0,0]
+	self.i = 0
+        self.order=int(order)+1
+        gr.sync_block.__init__(self,
+            name="plzr_plot",
+            in_sig=[numpy.float32,numpy.float32],
+            out_sig=None)
+	    
+    def plot(self,b,c):
+        string1 = "s=%s; h=syslin('c',"
+        string2 = str(b[4])+"*s^4+"+str(b[3])+"*s^3+"+str(b[2])+"*s^2+"+str(b[1])+"*s+"+str(b[0])+","
+        string3 = str(c[4])+"*s^4+"+str(c[3])+"*s^3+"+str(c[2])+"*s^2+"+str(c[1])+"*s+"+str(c[0])+");"
+	string4 = "plzr(h);"
+  
+	string = string1 + string2 +string3 + string4
+        sciscipy.eval(string)
+
+
+	
+    def work(self, input_items, output_items):
+	print "I am input", input_items
+	print "I am output", output_items
+	k = self.order
+	for i in range(0,k):
+	    self.b[i] = input_items[0][i]
+	print "I am value of b\n",self.b    
+	
+	
+	for j in range(0,k):
+	    self.c[j] = input_items[1][j]
+	print "I am vlaue of c\n", self.c
+		
+        self.plot(self.b,self.c)	
+        in0 = input_items[0]
+        # <+signal processing here+>
+        return len(input_items[0])
+