Heatmap of 2D plot

I have 5 seconds data of a continuous signal of frequency 512 Hz. I need to get a heatmap of this .

I have refered this https://stackoverflow.com/questions/23356219/plotting-many-lines-as-a-heatmap. I need a similiar plot with my data. Can I get some help with the code please.

I've attached the data as a .mat file.

[KSSV]

Attach your data into a mat file or a text file. Copying from here is a headache job.

[meghna roy chowdhury]

Hi, I've attached the .mat file

[KSSV]

I have answered t..hope it is useful.

Answer 1

[KSSV]

t=[1/512:1/512:5]';
z = zeros(size(t));
col = amp;  % This is the color, vary with amp in this case.
surface([t t],[amp amp],[z z],[col col],...
        'facecol','no',...
        'edgecol','interp',...
        'linew',2);

[meghna roy chowdhury]

Thank you. This is very helpful.

Is there any difference between colormap and heatmap?

Apologies again, for missing this comment

[KSSV]

heatmap is a 2D spread of certain value. colormap is a color pallet used to show such a spread. There are direct functions for this read about heatmap and colormap.