我有一个数据帧,我想绘制其热图: dput(df)
structure(list(`0` = c(6.08, 7.91, 5.14, 2.23, 0.72, 0.19, 0.04,
0.01, 0, 0, 0), `1` = c(9.12, 11.86, 7.71, 3.34, 1.09, 0.28,
0.06, 0.01, 0, 0, 0), `2` = c(6.84, 8.89, 5.78, 2.5, 0.81, 0.21,
0.05, 0.01, 0, 0, 0), `3` = c(3.42, 4.45, 2.89, 1.25, 0.41, 0.11,
0.02, 0, 0,