-#

-# Copyright 2007,2008,2011 Free Software Foundation, Inc.

-#

-# This file is part of GNU Radio

-#

-# SPDX-License-Identifier: GPL-3.0-or-later

-#

-#

-"""

-Utility to help plotting data from files.

-"""

-

-from __future__ import print_function

-from __future__ import division

-from __future__ import unicode_literals

-

-from argparse import ArgumentParser

-

-import numpy

-

-try:

- from pylab import Button, connect, draw, figure, figtext, get_current_fig_manager, show, plot, rcParams

-except ImportError:

- print("Please install Python Matplotlib (http://matplotlib.sourceforge.net/) and Python TkInter https://wiki.python.org/moin/TkInter to run this script")

- raise SystemExit(1)

-

-

-datatype_lookup = {

- "complex64": numpy.complex64,

- "float32": numpy.float32,

- "uint32": numpy.uint32,

- "int32": numpy.int32,

- "uint16": numpy.uint16,

- "int16": numpy.int16,

- "uint8": numpy.uint8,

- "int8": numpy.int8,

-}

-

-class plot_data(object):

- def __init__(self, datatype, filenames, options):

- self.hfile = list()

- self.legend_text = list()

- for f in filenames:

- self.hfile.append(open(f, "r"))

- self.legend_text.append(f)

-

- self.block_length = options.block

- self.start = options.start

- self.sample_rate = options.sample_rate

-

- 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

-

- self.axis_font_size = 16

- self.label_font_size = 18

- self.title_font_size = 20

- self.text_size = 22

-

- # Setup PLOT

- self.fig = figure(1, figsize=(16, 9), facecolor='w')

- 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.make_plots()

-

- 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_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.xlim = self.sp_f.get_xlim()

-

- self.manager = get_current_fig_manager()

- connect('key_press_event', self.click)

- show()

-

- def get_data(self, hfile):

- 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)

- 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))])

-

- 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.plot_f = list()

-

- maxval = -1e12

- minval = 1e12

-

- for hf in self.hfile:

- # if specified on the command-line, set file pointer

- hf.seek(self.sizeof_data*self.start, 1)

-

- self.get_data(hf)

-

- # Subplot for real and imaginary parts of signal

- self.plot_f += plot(self.time, self.f, 'o-')

- maxval = max(maxval, self.f.max())

- minval = min(minval, self.f.min())

-

- self.sp_f.set_ylim([1.5*minval, 1.5*maxval])

-

- self.leg = self.sp_f.legend(self.plot_f, self.legend_text)

-

- draw()

-

- def update_plots(self):

- maxval = -1e12

- minval = 1e12

- 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])

-

- draw()

-

- def click(self, event):

- forward_valid_keys = [" ", "down", "right"]

- backward_valid_keys = ["up", "left"]

-

- if(find(event.key, forward_valid_keys)):

- self.step_forward()

-

- elif(find(event.key, backward_valid_keys)):

- self.step_backward()

-

- def button_left_click(self, event):

- self.step_backward()

-

- def button_right_click(self, event):

- self.step_forward()

-

- def step_forward(self):

- self.update_plots()

-

- 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)

- else:

- 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.add_argument("-d", "--data-type", default="complex64",

- 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]")

- parser.add_argument("-s", "--start", type=int, default=0,

- 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]")

- parser.add_argument("files", metavar="FILE", nargs='+',

- help="Input file with samples")

- return parser

-

-def find(item_in, list_search):

- try:

- return list_search.index(item_in) != None

- except ValueError:

- return False