Thanks for your answer.
1. But is it possible for me to change its scaling style
(eg change X-axis or y-axis into fixed scale or
non-fixed scale?

2. Also is this previous question solvable:
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how can I omit some values in X-axis or y-axis?
Eg: I just wish to show values of "1-10", "25-30" in y-
axis, others (ie "11-24") should be hidden.
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