matlab畫頻率直方圖,支援顏色變換
阿新 • • 發佈:2019-01-01
clear; C=[0.001393, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.001393, 0.000000, 0.000000, 0.001393, 0.002786, 0.002786, 0.004178, 0.002786, 0.001393, 0.002786, 0.004178, 0.005571, 0.004178, 0.009749, 0.008357, 0.008357, 0.011142, 0.011142, 0.019499, 0.025070, 0.051532, 0.094708, 0.015320, 0.011142, 0.009749, 0.008357, 0.011142, 0.011142, 0.011142, 0.009749, 0.009749, 0.006964, 0.011142, 0.006964, 0.006964, 0.006964, 0.005571, 0.012535, 0.008357, 0.006964, 0.005571, 0.005571, 0.006964, 0.001393, 0.004178, 0.008357, 0.004178, 0.006964, 0.002786, 0.005571, 0.002786, 0.005571, 0.005571, 0.004178, 0.001393, 0.004178, 0.002786, 0.000000, 0.005571, 0.006964, 0.004178, 0.006964, 0.004178, 0.002786, 0.000000, 0.002786, 0.001393, 0.011142, 0.004178, 0.002786, 0.004178, 0.001393, 0.004178, 0.005571, 0.006964, 0.004178, 0.004178, 0.001393, 0.000000, 0.002786, 0.000000, 0.001393, 0.004178, 0.000000, 0.001393, 0.002786, 0.000000, 0.001393, 0.002786, 0.002786, 0.000000, 0.002786, 0.001393, 0.001393, 0.000000, 0.000000, 0.001393, 0.002786, 0.001393, 0.000000, 0.000000, 0.002786, 0.001393, 0.004178, 0.000000, 0.002786, 0.004178, 0.002786, 0.000000, 0.000000, 0.001393, 0.000000, 0.001393, 0.004178, 0.002786, 0.000000, 0.001393, 0.000000, 0.001393, 0.001393, 0.002786, 0.002786, 0.005571, 0.002786, 0.000000, 0.002786, 0.002786, 0.000000, 0.001393, 0.001393, 0.002786, 0.001393, 0.005571, 0.001393, 0.004178, 0.004178, 0.002786, 0.001393, 0.002786, 0.004178, 0.004178, 0.002786, 0.004178, 0.004178, 0.002786, 0.001393, 0.005571, 0.001393, 0.001393, 0.000000, 0.002786, 0.006964, 0.002786, 0.004178, 0.002786, 0.002786, 0.004178, 0.000000, 0.006964, 0.005571, 0.004178, 0.006964, 0.001393, 0.005571, 0.002786, 0.004178, 0.002786, 0.002786, 0.004178, 0.005571, 0.001393, 0.004178, 0.002786, 0.001393, 0.001393, 0.002786, 0.004178, 0.004178, 0.001393, 0.001393, 0.004178, 0.004178, 0.002786, 0.002786, 0.006964, 0.004178, 0.001393, 0.001393, 0.006964, 0.005571, 0.001393, 0.001393, 0.001393, 0.002786, 0.001393, 0.000000, 0.001393, 0.000000, 0.000000, 0.000000, 0.001393, 0.004178, 0.000000, 0.001393, 0.001393, 0.000000, 0.000000, 0.087744 ]; cor=bar(0:255,C,'stacked','k'); xlabel('灰度值'); ylabel('概率'); axis([0 260 0 0.16]); title('直方圖3');
輸入一個數組,即影象灰度的頻率值。bar函式分別記錄x,y軸元素的值,然後用k表示黑色, axis設定座標軸範圍。
結果