In how to set the display time in a graph, I used a test program that showed only a few minutes of data, how to set it to display all the time; for example how to draw such a graphhttps://www.fmz.com/robot/116190
The Little DreamWhen drawing a graph, the page has a data capacity limit, and if you exceed a certain amount of data, the graph will be split, if desired. The time span of the display can only greatly reduce the frequency of the graph, because a page cannot carry too much data.