That means for Cartesian coordinate systems that the x-axis shows the lower values on the left and the y-axis shows the lower values at the bottom. For polar coordinate systems the mathematical angle axis direction is counterclockwise and the radial axis is from inner to outer.
这意味着对于迪卡尔坐标系，x 轴在左边显示较低值，y 轴在底部显示较低值。对于极坐标系，数学角度轴方向是逆时针方向，极轴方向是从内向外。