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Octave で棒グラフを描く

Last updated at Posted at 2022-08-01

Octave で棒グラフを描く

bar(y)
bar(x, y)
bar(..., w)
bar(..., style)
bar(..., prop, val), ...)
bar(hax, ...)
h = bar(..., prop, val), ...)

水平棒グラフは barh()。引数は bar() と同じ。

w: 棒の幅(デフォルトは 0.8)
y が行列の場合は列ごとの棒グラフを描く。
style: "grouped"(デフォルト) 隣り合わせに配置
              "stacked" 積み上げ棒グラフ
       "hist" 棒の間に隙間を置かない。中央揃え
       "histc" 左揃え
prop, value の対
  "facecolor", "edgecolor"
  "r", "g", "b", "k", "none", [r g b] など
h: 戻り値は,作られた棒グラフのハンドルベクトル(使用例参照)    
pkg load statistics

clf;
y = binopdf(0:10, 10, 0.35);
bar(0:10, y, "facecolor", [0.9297 0.9648 1])
box off  % default is on     図の外枠を描かない
set(gca, "tickdir", "out") % ティックマークを外側に描く
xlim([-1, 11])
ylim([0, 0.3])
title("binomial distribution\nn = 10, p = 0.35")
xlabel("x")
ylabel("p")
set(gca, "fontsize", 18) %   一括して変更するとき

output_1_0.png

pkg load statistics

y = [binopdf(0:10, 10, 0.15)', binopdf(0:10, 10, 0.35)', binopdf(0:10, 10, 0.5)'];

clf;
h = bar(0:10, y, "hist");
set(h(1), "facecolor", [0.9297 0.9648 1]);
set(h(2), "facecolor", [0.8 0.9 0.5]);
set(h(3), "facecolor", [0.9 0.7 0.6]);
box off  % default is on     図の外枠を描かない
set(gca, "tickdir", "out") % ティックマークを外側に描く
xlim([-1, 11])
ylim([0, 0.35])
title("binomial distribution\nn = 10, p = [0.15, 0.35, 0.50]")
xlabel("x")
ylabel("p")
set(gca, "fontsize", 18) %   一括して変更するとき

output_2_0.png

pkg load statistics

y = [binopdf(0:10, 10, 0.15)', binopdf(0:10, 10, 0.35)', binopdf(0:10, 10, 0.5)'];

clf;
h = barh(0:10, y, "histc");

set(h(1), "facecolor", [0.9297 0.9648 1]);
set(h(2), "facecolor", [0.8 0.9 0.5]);
set(h(3), "facecolor", [0.9 0.7 0.6]);

box off  % default is on     図の外枠を描かない
set(gca, "tickdir", "out") % ティックマークを外側に描く
ylim([-1, 11])
xlim([0, 0.35])
title("binomial distribution\nn = 10, p = [0.15, 0.35, 0.50]")
ylabel("x")
xlabel("p")
set(gca, "fontsize", 18) %   一括して変更するとき

output_3_0.png

pkg load statistics

y = [binopdf(0:10, 10, 0.15)', binopdf(0:10, 10, 0.35)', binopdf(0:10, 10, 0.5)'];

clf;
h = barh(0:10, y, "stacked");

set(h(1), "facecolor", [0.9297 0.9648 1]);
set(h(2), "facecolor", [0.8 0.9 0.5]);
set(h(3), "facecolor", [0.9 0.7 0.6]);

box off  % default is on     図の外枠を描かない
set(gca, "tickdir", "out") % ティックマークを外側に描く
ylim([-1, 11])
xlim([0, 0.55])
title("binomial distribution\nn = 10, p = [0.15, 0.35, 0.50]")
ylabel("x")
xlabel("p")
set(gca, "fontsize", 18) %   一括して変更するとき

output_4_0.png

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