What is the function of the curve displayed in vivox60 weather APP?

OriginOS optimizes the presentation form of weather information, and displays the temperature information that users care about intuitively in the form of temperature lines. Through the temperature color card and temperature curve with 90 color values, through the alternating changes of cold and warm colors on the rhythm curve, you can perceive the changes of cold and warm colors at a glance, and drag the temperature line left and right to enter the weather APP for experience.