histogram

2018-02-19 18:01:28 -05:00 · 2018-02-19 18:01:28 -05:00 · 0d0a2fa643
parent 61d82dbdc8
commit 0d0a2fa643
1 changed files with 442 additions and 0 deletions
--- a/examples/histogram.py
+++ b/examples/histogram.py
@ -0,0 +1,442 @@
+from __future__ import division
+
+import axi
+
+def main():
+    W = 8.5
+    H = 0.5
+    total = sum(x[1] for x in DATA)
+    lo = min(x[0] for x in DATA)
+    hi = max(x[0] for x in DATA)
+    peak = max(x[1] for x in DATA)
+    paths = []
+    path = []
+    for key, count in DATA:
+        x = W * (key - lo) / (hi - lo)
+        y = H * count / peak
+        path.append((x, -y))
+        if y > 0.01:
+            paths.append([(x, 0), (x, -y)])
+    paths.append(path)
+
+    paths.append([(0, 0), (W, 0)])
+
+    labels = [0, 1000, 2000, 3000, 3851]
+    for key in labels:
+        x = W * (key - lo) / (hi - lo)
+        paths.append([(x, 0.0), (x, 0.05)])
+        d = axi.Drawing(axi.text(str(key), axi.FUTURAL))
+        d = d.scale_to_fit_height(0.1)
+        d = d.move(x, 0.15, 0.5, 0)
+        paths.extend(d.paths)
+
+    title = 'Elevation Distribution (meters above sea level)'
+    d = axi.Drawing(axi.text(title, axi.FUTURAL))
+    d = d.scale_to_fit_height(0.15)
+    d = d.move(W / 2, 0.3, 0.5, 0)
+    paths.extend(d.paths)
+
+    d = axi.Drawing(paths)
+    d = d.rotate(180)
+    d = d.rotate_and_scale_to_fit(8.5, 8.5, step=90)
+    d = d.move(12, 8.5 / 2, 1, 0.5)
+    print d.bounds
+
+    d = d.sort_paths()
+    d = d.join_paths(0.01)
+    d = d.simplify_paths(0.001)
+
+    d.render().write_to_png('out.png')
+    d.dump('out.axi')
+
+DATA = [
+(0, 1860),
+(10, 616),
+(20, 13896),
+(30, 7390),
+(40, 17106),
+(50, 17756),
+(60, 19812),
+(70, 20846),
+(80, 26540),
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+]
+
+if __name__ == '__main__':
+    main()