縦軸

1. Origins, structure, and basic meaning

• Structure: 縦軸 is read as たてじく and is a noun for the vertical axis of a graph or coordinate system.
• Basic usage: Showing temperature on the vertical axis appears in 縦軸に気温を示す, while changing its scale to intervals of ten appears in 縦軸の目盛りを十刻みに直す.

2. Common pitfalls and similar expressions

• Values and scale marks
  • Use に for a value shown on the axis and 縦軸の目盛り for the scale marks belonging to it.
• Difference from 横軸
  • Unlike the horizontal axis running left to right, this axis presents values in the vertical direction.