Event function in ODE45

2014 5 14
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更新时间：2014 5 14
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Hi, I have to create an event function for ode45 that terminate the integration as the quantity say x,becomes grater than 0. I know how to write it for x=0. but for x>0 or x<0, i could not figure out. Please help me out for this.
Regards Sunit

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回答（1 个）

Star Strider
Star Strider 2014-5-14

0 个投票

Under ‘Event Location’ the options are:
  • -1 Detect zero crossings in the negative direction only
  • 0 Detect all zero crossings
  • 1 Detect zero crossings in the positive direction only
So it would seem that the +1 option would be what you want.

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