如圖所示在 Y 軸上畫線,在 matplotlib 中現有的 XY 圖上 [英]Draw line on Y-axis as shown in attached figure, on existing X-Y plot in matplotlib
如何在 python 中以像素數為 x 軸,灰度顏色為 y 軸 plot 圖形? [英]How can I plot the figure with the number of pixel as a x-axis and the grayscale color as a y-axis in python?