Intensity graph smoothing

[mano2406]

hi, am new to labview. i have a doubt regarding the smoothing of the graph. i fed the values of x and y axis in the intensity graph and made it to  look like foot. after making it looks like the below attached image, i want to smooth the intensity graph .pls help me.

[Bob_Schor]

Post your code (this usually means "Attach a VI" -- if you have multiple VIs, compress the folder that contains them and attach the resulting .ZIP file).

Bob Schor

[Alexander_Sobolev]

You can try 3D graph - surface.

With the following settings it looks like interpolated intensity graph:

Right click, select 3D plot properties

Graph

-> View direction -> towards XY plane

-> View projection -> Orthographic

Surface

-> Surface -> Color mode -> Interpolated shading

-> Surface -> Mesh -> Off

[mano2406]

thanks for the reply. i attached the vi. i want to smoothen the graph.

[altenbach]

Please explain what you mean by :smoothing". It could man many things, for example:

• Convolute with a gausian kernel or similar.
• Use a finer grid and bilinear interpolation.
• Do antialiasing,
• etc.

Plese explain what kind of result you expect from the given data.

(... and also please use regular array container sizes with scrollbars, not array controls that are dozens of screens high. Also you should not wire N of the FOR loop when autoindexing.)

[mano2406]

Thanks for the reply. I want to do antialiasing.

[mano2406]

sir, am attaching the image of intensity graph after feeding the values to x and y. the output has sharp edges, i want to smoothen it.

[altenbach]

Your image has sharp edges because the "pixels" are large squares. What you should do is resample the data at a higher resolution using bilinear ipterpolation.

An example is given here.

You also need the subVI from here.

Here is a coarse 4x4 grid resampled at a 40x40 grid.

While you are at it, please also vote for this idea. Thanks.)

[altenbach]

Here's a very simple example. Probably needs a few tweaks.

Modify as needed.

 

[altenbach]

Of course in this particular case it would be easier to use the stock tools from the interpolation palette. Here's that version: