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我也很想知道答案,希望有大神能解决这个问题。
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本帖最后由 sushu 于 2013-9-25 09:32 编辑
另外一条曲线的开始几个点用null代替,graph不绘制null的点,试一试 sorry:应该是NaN,记错了。graph不绘制NaN的点。 |
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试了多种方法还是不能创建带null结点的数组,能否贴个小程序呢 |
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Sorry,我记错了,是NaN; ![]() ![]() 关于NaN的官方解释: http://labviewwiki.org/NaN NaNNaN is the notation in LabVIEW for the floating-point value Not-a-Number. LabVIEW implements the IEEE-754 standard for floating-point calculations, which specifies unique values for the outputs of mathematical operations which have no meaningful numerical result. A few examples of calculations which produce NaN are:
One salient feature of the NaN value is that all comparison operations involving NaN return FALSE, including the equality operator (in other words, NaN != NaN). LabVIEW provides the Not A Number/Path/Refnum? primitive, which is the proper way to test for NaN.
Use Cases
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太厉害了,学习学习
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前几天弄出来过,这几天又给忘了
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谢谢了,刚好急用,谢谢
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感谢!
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