For bar type plots, the data is the length of the bar, and the choice between column or bar type determines the orientation.
对于条形图，数据是条的长度，柱形图和条形图之间的选择决定条的方向。
2
The color of each bar is based on the value of the %MISS column (see Table 2), with a gradient moving from red (100%) through yellow (50%) and finally on to green (0%).