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taking two consecutive distance measures

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Hello everybody,
i want to take two consecutive distance measures, let's say that first one is A and second one is B and then i have to do A/B 
please find below the program 

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here is solution check this vi

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Hi hatef,

 

i need to take two measures A and B so i can use the value of A and the value of B and do A/B , in the program that you sent, only the current value you can use and the previous one it's cleared

 

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you need just use shift register for this one 

see this image and do it for your line lengh wire  data

shift.jpg

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hi hatef ,
all what i need is saving the previous measure value " A " and divide it with the new measure B 

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Solution
Accepted by topic author wajih7

this is two method for your request one with holding ctrl and plot two line roi

second without use ctrl for line 

see two of them and choose with is better for you

best regards,

Hatef

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than you hatef

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