Interpolate intensity graph

[HEAPO8]

Hi guys, I was just wondering whether anyone knows how to use the interpolate function with an intensity graph. I want to use it so my results can look "smoother". I have attached my code to this email- is it possible to include the interpolate fuction within this code? Thanks.

[altenbach]

Well, you only have 16 elements, so what do you expect?

You can respame the image at a higher resolution using bilinear interpolation. here's an old example.

There is even one of my ideas that suggest native LabVIEW support for all this. Of course you also might be able to use 2D interpolation. What have you tried so far?

[HEAPO8]

Hi altenbach! Oh, I fixed the other problem I had, so once I have done this then I will be sorted! I am aware of the methods- I am just not sure how to implement it in my code- are you able to help? Thanks (again!)

[altenbach]

Have you looked at the example I linked above?

[HEAPO8]

Hi altenbach. I am having problems opening up the whole of the example VI, so I cannot see how you have connected your code for the  interpolation with the rest of the code. I attempted to do a bit of trial and error, but I cannot connect a Intensity graph at the end of your 2d bilinear code (it comes up with an error). I have attached my attempted VI below. Can  you tell me where I have gone wrong? Thanks

[altenbach]

The subVI only generates one point. You need to loop over a new 2D grid as shown in the linked example.

[HEAPO8]

Hi altenbach, would just like to say this issue has been resolved and I have been able to interpolate my readings. Just would like to know how the example works, in depth. Although it has worked, i would like to knowhow it it works. You provided a brief explination, just wanted to know whether you can go into further detail? thank you

[altenbach]

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@HEAPO8 wrote:

You provided a brief explination, just wanted to know whether you can go into further detail? thank you

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Bilinear Interpolation

[HEAPO8]

what does the "ramp by samples" VI mean? and the reason why the reason why you have the code in 2 loops is because the subVI only generates one point?

[altenbach]

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@HEAPO8 wrote:

what does the "ramp by samples" VI mean?

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If in doubt about a function: Right-click...help!

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@HEAPO8 wrote:

and the reason why the reason why you have the code in 2 loops is because the subVI only generates one point?

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Yes, we need to do it for each point in the new grid.