关于TablePlot图表读取的技术咨询：分割线及坐标轴含义

Let's break down your questions clearly, using the example plot you're referencing:

What do the black dividing lines in variables like P1-P2-P3-P4-P5 represent? #

In TabPlot visualizations, those horizontal black lines are nearly always quantile markers—specifically the three core quartiles that split your data into even proportional buckets:

• The bottom line: 25th percentile (Q1), meaning 25% of the data points for that variable fall below this value
• The middle line: 50th percentile (median, Q2), splitting the data exactly in half (50% of values sit above this line, 50% below)
• The top line: 75th percentile (Q3), meaning 75% of the data points for the variable fall below this value

Since your Y-axis is scaled from 0% to 100%, these lines align directly with those percentage thresholds. For example, the middle line sits at the 50% Y-position, marking the median value of the variable on the X-axis.

Is the X-axis for each variable a proportion or the raw/regular data value? #

The X-axis in a TabPlot represents the raw, regular values of the variable (not a proportion). The Y-axis (0% to 100%) communicates the cumulative distribution of those values:

• If you pick a point on P1's X-axis and trace up to the 50% Y-line, that X-value is the median of all P1 data points
• If you look at the 90% Y-position, the corresponding X-value is the 90th percentile—meaning 90% of P1 data points are less than or equal to that number

This layout lets you quickly compare the distribution (spread, central tendency) across all your variables (P1-P5) in a compact, table-like format.

内容的提问来源于stack exchange，提问作者JohnRambo