Heatmap graph

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Hello,

I was wondering which is the most appropriate way to have a visual representation of my data as the example attached. In the example: Y Axis, each row represent an individual. X Axis, correspond to the time. The color code is the z-score.

In my case, I would like to plot in the Y Axis several individual 1d waves.  So, each row represent a 1d wave. In the X axis the time. All the 1d waves are scaled (in time units) and have the same amount of points. The color code should be the z-score already calculated in each separate 1d wave. So, my question is which kind of plot should I use, and also, how can I "bin" the data in order to have bigger "blocks" and adjust the resolution.

I was thinking to use something like JointHistogram but doesn't work with 1d waves.

Thanks.

 heatmap z-score

You can get the effect that you want by concatenating all of the 1D waves you want to plot using Concatenate/NP=1 and then display this 2D wave as a NewImage. The binning problem you are referring to is OK, since you can manually resize the window/graph to get the height of each row as you like.

As an example:

// make a fake 2D wave
Make/O/N=(100,5) aa = enoise(50) + p * (q + 1)
// display 2D wave as an image
NewImage/K=0/S=1 root:aa
// apply a LUT
ModifyImage aa ctab= {*,*,BlueRedGreen,0}

For your example image you'll need a custom LUT as I don't think it is one of the defaults.

April 26, 2020 at 01:36 pm - Permalink

Thanks, actually works well! The color was just an example. And for the "bin" issue I use resample to control the "smoothness" of the blocks.

 

Thanks again.

Pedro.

April 27, 2020 at 12:05 pm - Permalink