User:Xenwolf/Python: Difference between revisions

VisualWikitext

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 ... just snippets ...
+__TOC__
+== Calculate ED step size ==
 <syntaxhighlight lang="python">
 import math
-# formatted output integrated, default (5) is for step size
+# formatted size string
-def interval_size(steps, division, equave, digits=5):
+def ed_interval_size(steps, division=12, equiv=2, digits=0):
-     return f'{math.log(equave, 2)/division*steps * 1200:.{digits}f}'
+    return f'{math.log(equiv, 2)/division*steps * 1200:.{digits}f}'
+# some examples
+print('1\\271 EDT --- ', ed_interval_size(1, 271, 3, 5))
+print('1\\100 EDF --- ', ed_interval_size(1, 100, 3/2, 5))
+print('1\\171 EDO --- ', ed_interval_size(1, 171, 2, 5))
+</syntaxhighlight>
+The equivalence intervals are:
+* [[EDO]]: <code>equiv = 2</code> (octave)
+* [[EDF]]: <code>equiv = 3/2</code> (fifth)
+* [[EDT]]: <code>equiv = 3</code> (tritave)
+Output of above script:
+<pre>
+\271 EDT ---  7.01828
+\100 EDF ---  7.01955
+\171 EDO ---  7.01754
+</pre>
+== Generate EDO exposés ==
+The following script creates most of the parameters for EDO info boxes, it can also be used as a module:
+<syntaxhighlight lang="python">
+import math
+# step size in cents
+def ed_interval_size(steps, division=12, equiv=2):
+     return math.log(equiv, 2)/division * steps * 1200
+# format (most of) of XenWiki info box
+def edo_info(n):
+    a = ed_interval_size(1, n, 2)
+    p5s = round(n*math.log(3/2, 2))
+    p5c = round(p5s*1200/n)
+    p5 = f'{p5s}\{n} ({p5c}¢)'
+    M2s = (2*p5s) % n
+    M2c = round(M2s*1200/n)
+    M2 = f'{M2s}\{n} ({M2c}¢)'
+    m2s = 3*n - 5*p5s
+    m2c = round(m2s*1200/n)
+    m2 = f'{m2s}\{n} ({m2c}¢)'
+    A1s = M2s - m2s
+    A1c = round(A1s*1200/n)
+    A1 = f'{A1s}\{n} ({A1c}¢)'
+    print(f'{n} EDO ')
+    print(f'| Step size = {a:.5f}¢')
+    print(f'| Fifth = {p5}')
+    print(f'| Major 2nd = {M2}')
+    print(f'| Minor 2nd = {m2}')
+    print(f'| Augmented 1sn = {A1}')
+    print()
+if __name__ == "__main__":
+    # some EDO examples
+    for n in range(1, 100):
+        ed_expose(n)
 </syntaxhighlight>