1 files changed, 48 insertions, 32 deletions
diff --git a/gr-utils/plot_tools/plot_data.py b/gr-utils/plot_tools/plot_data.py
index 4a42659514..18e7ae87e4 100644
--- a/gr-utils/plot_tools/plot_data.py
+++ b/gr-utils/plot_tools/plot_data.py
@@ -33,6 +33,7 @@ datatype_lookup = {
     "int8": numpy.int8,
 }
 
+
 class plot_data(object):
     def __init__(self, datatype, filenames, options):
         self.hfile = list()
@@ -48,7 +49,8 @@ class plot_data(object):
         self.datatype = datatype
         if self.datatype is None:
             self.datatype = datatype_lookup[options.data_type]
-        self.sizeof_data = self.datatype().nbytes    # number of bytes per sample in file
+        # number of bytes per sample in file
+        self.sizeof_data = self.datatype().nbytes
 
         self.axis_font_size = 16
         self.label_font_size = 18
@@ -60,20 +62,25 @@ class plot_data(object):
         rcParams['xtick.labelsize'] = self.axis_font_size
         rcParams['ytick.labelsize'] = self.axis_font_size
 
-        self.text_file_pos = figtext(0.10, 0.88, "File Position: ", weight="heavy", size=self.text_size)
-        self.text_block    = figtext(0.40, 0.88, ("Block Size: %d" % self.block_length),
-                                     weight="heavy", size=self.text_size)
-        self.text_sr       = figtext(0.60, 0.88, ("Sample Rate: %.2f" % self.sample_rate),
-                                     weight="heavy", size=self.text_size)
+        self.text_file_pos = figtext(
+            0.10, 0.88, "File Position: ", weight="heavy", size=self.text_size)
+        self.text_block = figtext(0.40, 0.88, ("Block Size: %d" % self.block_length),
+                                  weight="heavy", size=self.text_size)
+        self.text_sr = figtext(0.60, 0.88, ("Sample Rate: %.2f" % self.sample_rate),
+                               weight="heavy", size=self.text_size)
         self.make_plots()
 
-        self.button_left_axes = self.fig.add_axes([0.45, 0.01, 0.05, 0.05], frameon=True)
+        self.button_left_axes = self.fig.add_axes(
+            [0.45, 0.01, 0.05, 0.05], frameon=True)
         self.button_left = Button(self.button_left_axes, "<")
-        self.button_left_callback = self.button_left.on_clicked(self.button_left_click)
+        self.button_left_callback = self.button_left.on_clicked(
+            self.button_left_click)
 
-        self.button_right_axes = self.fig.add_axes([0.50, 0.01, 0.05, 0.05], frameon=True)
+        self.button_right_axes = self.fig.add_axes(
+            [0.50, 0.01, 0.05, 0.05], frameon=True)
         self.button_right = Button(self.button_right_axes, ">")
-        self.button_right_callback = self.button_right.on_clicked(self.button_right_click)
+        self.button_right_callback = self.button_right.on_clicked(
+            self.button_right_click)
 
         self.xlim = self.sp_f.get_xlim()
 
@@ -82,20 +89,27 @@ class plot_data(object):
         show()
 
     def get_data(self, hfile):
-        self.text_file_pos.set_text("File Position: %d" % (hfile.tell()//self.sizeof_data))
+        self.text_file_pos.set_text(
+            "File Position: %d" % (hfile.tell() // self.sizeof_data))
         try:
-            f = numpy.fromfile(hfile, dtype=self.datatype, count=self.block_length)
+            f = numpy.fromfile(hfile, dtype=self.datatype,
+                               count=self.block_length)
         except MemoryError:
             print("End of File")
         else:
             self.f = numpy.array(f)
-            self.time = numpy.array([i*(1 / self.sample_rate) for i in range(len(self.f))])
+            self.time = numpy.array([i * (1 / self.sample_rate)
+                                    for i in range(len(self.f))])
 
     def make_plots(self):
-        self.sp_f = self.fig.add_subplot(2,1,1, position=[0.075, 0.2, 0.875, 0.6])
-        self.sp_f.set_title(("Amplitude"), fontsize=self.title_font_size, fontweight="bold")
-        self.sp_f.set_xlabel("Time (s)", fontsize=self.label_font_size, fontweight="bold")
-        self.sp_f.set_ylabel("Amplitude (V)", fontsize=self.label_font_size, fontweight="bold")
+        self.sp_f = self.fig.add_subplot(
+            2, 1, 1, position=[0.075, 0.2, 0.875, 0.6])
+        self.sp_f.set_title(
+            ("Amplitude"), fontsize=self.title_font_size, fontweight="bold")
+        self.sp_f.set_xlabel(
+            "Time (s)", fontsize=self.label_font_size, fontweight="bold")
+        self.sp_f.set_ylabel(
+            "Amplitude (V)", fontsize=self.label_font_size, fontweight="bold")
         self.plot_f = list()
 
         maxval = -1e12
@@ -103,7 +117,7 @@ class plot_data(object):
 
         for hf in self.hfile:
             # if specified on the command-line, set file pointer
-            hf.seek(self.sizeof_data*self.start, 1)
+            hf.seek(self.sizeof_data * self.start, 1)
 
             self.get_data(hf)
 
@@ -112,7 +126,7 @@ class plot_data(object):
             maxval = max(maxval, self.f.max())
             minval = min(minval, self.f.min())
 
-        self.sp_f.set_ylim([1.5*minval, 1.5*maxval])
+        self.sp_f.set_ylim([1.5 * minval, 1.5 * maxval])
 
         self.leg = self.sp_f.legend(self.plot_f, self.legend_text)
 
@@ -121,13 +135,13 @@ class plot_data(object):
     def update_plots(self):
         maxval = -1e12
         minval = 1e12
-        for hf,p in zip(self.hfile,self.plot_f):
+        for hf, p in zip(self.hfile, self.plot_f):
             self.get_data(hf)
             p.set_data([self.time, self.f])
             maxval = max(maxval, self.f.max())
             minval = min(minval, self.f.min())
 
-        self.sp_f.set_ylim([1.5*minval, 1.5*maxval])
+        self.sp_f.set_ylim([1.5 * minval, 1.5 * maxval])
 
         draw()
 
@@ -153,31 +167,33 @@ class plot_data(object):
     def step_backward(self):
         for hf in self.hfile:
             # Step back in file position
-            if(hf.tell() >= 2*self.sizeof_data*self.block_length ):
-                hf.seek(-2*self.sizeof_data*self.block_length, 1)
+            if(hf.tell() >= 2 * self.sizeof_data * self.block_length):
+                hf.seek(-2 * self.sizeof_data * self.block_length, 1)
             else:
-                hf.seek(-hf.tell(),1)
+                hf.seek(-hf.tell(), 1)
         self.update_plots()
 
     @staticmethod
     def setup_options():
         description = "Takes a GNU Radio binary file and displays the samples versus time. You can set the block size to specify how many points to read in at a time and the start position in the file. By default, the system assumes a sample rate of 1, so in time, each sample is plotted versus the sample number. To set a true time axis, set the sample rate (-R or --sample-rate) to the sample rate used when capturing the samples."
 
-        parser = ArgumentParser(conflict_handler="resolve", description=description)
+        parser = ArgumentParser(
+            conflict_handler="resolve", description=description)
         parser.add_argument("-d", "--data-type", default="complex64",
-                choices=("complex64", "float32", "uint32", "int32", "uint16",
-                    "int16", "uint8", "int8"),
-                help="Specify the data type [default=%(default)r]")
+                            choices=("complex64", "float32", "uint32", "int32", "uint16",
+                                     "int16", "uint8", "int8"),
+                            help="Specify the data type [default=%(default)r]")
         parser.add_argument("-B", "--block", type=int, default=1000,
-                help="Specify the block size [default=%(default)r]")
+                            help="Specify the block size [default=%(default)r]")
         parser.add_argument("-s", "--start", type=int, default=0,
-                help="Specify where to start in the file [default=%(default)r]")
+                            help="Specify where to start in the file [default=%(default)r]")
         parser.add_argument("-R", "--sample-rate", type=float, default=1.0,
-                help="Set the sampler rate of the data [default=%(default)r]")
+                            help="Set the sampler rate of the data [default=%(default)r]")
         parser.add_argument("files", metavar="FILE", nargs='+',
-                help="Input file with samples")
+                            help="Input file with samples")
         return parser
 
+
 def find(item_in, list_search):
     try:
         return list_search.index(item_in) != None