How to do a similar to Windows CPU usage record program, remove the figure constantly from right to left,
Remove the figure X axis data from database, Y axis as a fixed value, remove the coordinates (X, Y) is derived from the database.

CodePudding user response:

Is it similar to the stock chart, with DW painting line can be achieved.

CodePudding user response:

Xuam, thanks for attention! Line drawing can be, but, how to let a second chart move to the left one?

CodePudding user response:

The timer ()
The

reference 2 floor response:

xuam, thanks for attention! Line drawing can be, but, how to let a second chart move to the left one?

CodePudding user response:

A second execute a query, in this case, when the query out a lot of information, such as one hundred thousand rows of data, is that the effect of the chart

CodePudding user response:

Move the canvas!

CodePudding user response:

I clarify question again:
Table structure:
The date time data
Every minute of the above three fields of data from other machines to receive a new data, take out stitches to generate a figure now, remove the figure to move like the chart to the left a second time, to observe the trend of the data changes over time, the Y coordinate display data, X coordinate shows time, excuse me each expert how to design and implement,