然后，这个设备驱动程序的角色是每当出现中断时就查询触摸屏控制器，并请求控制器发送触摸的坐标。
The role of the device driver, then, is to query the touch screen controller whenever an interrupt occurs, and to ask the controller to send the coordinates of the touch.
要按照距离进行查询，必须使用投影坐标系。
To query by distance, you must use a projected coordinate system.
在工作台中的多维数据集上执行一个多维查询，以将业务名称显示为x坐标轴和y坐标轴的标签。
Execute a multidimensional query on a cube in the workbench to display business names as labels of X-axis and Y-axis.
再根据那些极值，发现所有查询中的最小/最大X/Y坐标，从而获得总的范围。
Using those extrema, you find the minimum/maximum X/Y coordinates across all queries and, thus, have the overall extent.
再根据那些极值，发现所有查询中的最小/最大X/Y坐标，从而获得总的范围。
Using those extrema, you find the minimum/maximum X/Y coordinates across all queries and, thus, have the overall extent.
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