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docs/ccxt/wiki/examples/py/asciichart.md

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+- [Asciichart](./examples/py/)
+
+
+ ```python
+ # -*- coding: utf-8 -*-
+
+# This file is a copied implementation from my asciichart repository on GitHub
+# https://github.com/kroitor/asciichart
+
+from math import cos
+# from math import sin
+from math import pi
+from math import floor
+from math import ceil
+
+
+def plot(series, cfg={}):
+
+    minimum = min(series)
+    maximum = max(series)
+
+    interval = abs(float(maximum) - float(minimum))
+    offset = cfg['offset'] if 'offset' in cfg else 3
+    # padding = cfg['padding'] if 'padding' in cfg else '       '
+    height = cfg['height'] if 'height' in cfg else interval
+    ratio = height / interval
+    # print(minimum,ratio,type(minimum))
+    min2 = floor(float(minimum) * ratio)
+    max2 = ceil(float(maximum) * ratio)
+
+    intmin2 = int(min2)
+    intmax2 = int(max2)
+
+    rows = abs(intmax2 - intmin2)
+    width = len(series) + offset
+    # format = cfg['format'] if 'format' in cfg else lambda x: (padding + '{:.2f}'.format(x))[:-len(padding)]
+
+    result = [[' '] * width for i in range(rows + 1)]
+
+    # axis and labels
+    for y in range(intmin2, intmax2 + 1):
+        label = '{:8.2f}'.format(float(maximum) - ((y - intmin2) * interval / rows))
+        result[y - intmin2][max(offset - len(label), 0)] = label
+        result[y - intmin2][offset - 1] = '┼' if y == 0 else '┤'
+
+    y0 = int(series[0] * ratio - min2)
+    result[rows - y0][offset - 1] = '┼'  # first value
+
+    for x in range(0, len(series) - 1):  # plot the line
+        y0 = int(round(series[x + 0] * ratio) - intmin2)
+        y1 = int(round(series[x + 1] * ratio) - intmin2)
+        if y0 == y1:
+            result[rows - y0][x + offset] = '─'
+        else:
+            result[rows - y1][x + offset] = '╰' if y0 > y1 else '╭'
+            result[rows - y0][x + offset] = '╮' if y0 > y1 else '╯'
+            start = min(y0, y1) + 1
+            end = max(y0, y1)
+            for y in range(start, end):
+                result[rows - y][x + offset] = '│'
+
+    return '\n'.join([''.join(row) for row in result])
+
+
+if __name__ == '__main__':
+    width = 180
+    series = [15 * cos(i * ((pi * 4) / width)) for i in range(width)]
+    print(plot(series))
+ 
+```