Comparing an Element to a 2D Array

[CakeBoss14]

For my project, I'm trying to create either a case structure or a 2 event strutcture that will change based on the compared values. I want to see if a pair of coordinates (2 doubles/1D arrary) are found in a 2D array of thousands of other coordinates. Depending if they match, I'll have two different actions. What is the best way to go about this? 

[GerdW]

Hi Cake,

how are your data arranged?

I suspect your 2D array consists of 2 columns, one column for X and one for Y coordinate…

Search the first column for your X coordinate. If you found a hit you check the corresponding Y coordinates!

(Keep in mind comparing floats can be dangerous…)

[CakeBoss14]

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(Keep in mind comparing floats can be dangerous…)

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A little new to labview, but is comparing DBL's really bad I'm assuming? Should I change the values to INTs to avoid this issue?

[altenbach]

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@CakeBoss14 wrote:

For my project, I'm trying to create either a case structure or a 2 event strutcture that will change based on the compared values. 

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• Event structures are for user interactions, not for data driven code. Use a case structure.
• Instead of having a Nx2 2D array, you could operate on a complex 1D array.
• As others have already said, comparisons of floating point numbers are tricky. Instead of "equal", you should find the values that are "close enough" based on the problem.

Can you show us some simple exampe code and data?

[PalanivelThiruvenkadam]

Share us the code, which you tried...
If your data type needs to double then compare based on upper and lower limit other than equal....
If u don't have problem in converting to integer you can very well use integer for comparison