From ba67e4e9cc8961124714c5bf7a4be6624a0a695d Mon Sep 17 00:00:00 2001
From: Arturs Artamonovs <dos21h@gmail.com>
Date: Wed, 19 Jul 2023 05:08:20 +0100
Subject: Fixed table in README

---
 README.md           |   1 -
 airspy_waterfall.py | 153 ----------------------------------------------------
 2 files changed, 154 deletions(-)
 delete mode 100644 airspy_waterfall.py

diff --git a/README.md b/README.md
index d555884..f6c9a89 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,6 @@ udevadm control --reload-rules
 
 ## Supported and tested
 
-| --- | --- | --- | --- |
 | Python | libairspyhf | OS | Status |
 | --- |--- | --- | --- | 
 | 3.9, 3.10 | 1.7.1 | ArchLinux, Ubuntu 20.04 | Supported and tested |
diff --git a/airspy_waterfall.py b/airspy_waterfall.py
deleted file mode 100644
index 255ecd5..0000000
--- a/airspy_waterfall.py
+++ /dev/null
@@ -1,153 +0,0 @@
-import os
-import sys
-import math
-
-import airspyhf
-
-import matplotlib
-import numpy
-import pylab
-
-import pygame
-from pygame import gfxdraw
-
-CENTER_FREQ = 4e6
-SAMPLE_RATE = 196e3
-SAMPLE_NUM = 2048
-GAIN = 'auto'
-
-SCREEN_X = 1025
-SCREEN_Y = 320
-
-MOVE_STEP = 0.1e6
-
-# init RTLSDR and if no then go out
-try:
-    pass
-except IOError:
-    print
-    "Probably RTLSDR device not attached"
-    sys.exit(0)
-
-# config rtlsdr device
-#rtl.sample_rate = SAMPLE_RATE
-#rtl.center_freq = CENTER_FREQ
-#rtl.gain = GAIN
-
-
-def iq_abs(c):
-    return (math.sqrt((c.real ** 2 + c.imag ** 2)))
-
-
-# point should be normalised to 0.0 ... 1.0
-def color_normalise(point):
-    ret = (255, 0, 0)
-    # blue
-    if (point < 0.3):
-        ret = (0, 0, int(point * 255 * 3.3))
-    # yello
-    elif (point < 0.7):
-        ret = (0, int((point - 0.3) * 255 * 2.5), 0)
-    # red
-    elif (point <= 1.0):
-        ret = (int((point - 0.7) * 255 * 3.3), 0, 0)
-    else:
-        # print "Color Error ", point
-        pass
-    return ret
-
-
-def color_mapping(x):
-    "assumes -50 to 0 range, returns color"
-    r = int((x + 50) * 255 // 50)
-    r = max(0, r)
-    r = min(255, r)
-    return (r, r, 100)
-
-
-# def draw_Hz( surface, x, y, hz ):
-
-
-arr = [[0 for i in range(0, SCREEN_X)] for j in range(0, SCREEN_Y)]
-
-# init all pygame modules audio,video and more
-pygame.init()
-
-# [NEW] creates screen surface using constants
-screen = pygame.display.set_mode((SCREEN_X, SCREEN_Y))
-
-#samples = rtl.read_samples(SAMPLE_NUM)
-samples = []
-
-run = True
-line = 0
-while run:
-
-    # print "update"
-
-    # check for all events that where ocure
-    for event in pygame.event.get():
-        # if some one clicked on close button
-        if event.type == pygame.QUIT:
-            # terminate programm
-            run = False
-            # don't waste your time by waiting while event loop will end
-            break
-        elif event.type == pygame.KEYDOWN:
-            if event.key == pygame.K_LEFT:
-                print
-                "Left"
-                rtl.center_freq -= MOVE_STEP
-                print
-                "Center freq: ", rtl.center_freq, " Hz"
-            elif event.key == pygame.K_RIGHT:
-                print
-                "Right"
-                rtl.center_freq += MOVE_STEP
-                print
-                "Center freq: ", rtl.center_freq, " Hz"
-
-    width = SCREEN_X
-    height = SCREEN_Y
-
-    samples = rtl.read_samples(SAMPLE_NUM)
-    spect = numpy.fft.fft(samples)
-    spect = spect[0:len(spect) / 2]
-
-    # (1/(Fs*N)) * abs(xdft).^2;
-    spect_n = [(1.0 / (SAMPLE_NUM * len(spect))) * iq_abs(x) ** 2 for x in spect]
-    spect_n = (10 * numpy.log10(spect_n)).tolist()
-
-    # total data size
-    spect_len = len(spect_n)
-
-    # calculate amount spect points per pixel without rounding
-    pixel_width = spect_len / SCREEN_X + 1
-    pixel_steps = spect_len / pixel_width
-
-    for step in range(0, pixel_steps):
-        avg = 0.0
-        for i in range(0, pixel_width):
-            avg += spect_n[step * pixel_width + i]
-        avg /= pixel_width
-
-        # print avg
-        # gfxdraw.pixel( screen, step, line, color_normalise((100-abs(avg))/10))
-        gfxdraw.pixel(screen, step, line, color_mapping(avg))
-
-    # draw central freq
-    font = pygame.font.Font(None, 20)
-    text = font.render(str(rtl.center_freq / 1e6), 1, (200, 30, 30), (0, 0, 0))
-    screen.blit(text, (SCREEN_X / 2, SCREEN_Y - 20))
-    text = font.render(str((rtl.center_freq + SAMPLE_RATE / 2) / 1e6), 1, (200, 30, 30), (0, 0, 0))
-    screen.blit(text, (SCREEN_X - 40, SCREEN_Y - 20))
-    text = font.render(str((rtl.center_freq - SAMPLE_RATE / 2) / 1e6), 1, (200, 30, 30), (0, 0, 0))
-    screen.blit(text, (20, SCREEN_Y - 20))
-
-    pygame.display.flip()
-    line += 1
-    if (line > SCREEN_Y):
-        line = 0
-
-pygame.quit
-
-- 
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