Heatmap on 1d-time series data
7 views (last 30 days)
Show older comments
Hello community,
i got several events on a 1-dimensional double Vector (about 60.000 x 1) (like a logical vector).
VecEvents=[0 0 0 1 0 1 0 1 1 0 1 0 0]; % 60.000x1 double
I extracted the timepoints the events occured and plotted them on a horizontal line to mark events:
Events=find(VecEvents==1);
y=ones(length(Events),1));
scatter(Events,y);
Here is an example of my real data:
![Scatter.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/270525/Scatter.png)
What I want is something like a coloured line or bar which highlights density of events.
My first approach was to smooth the vector linearly by a moving mean:
SmoothedEvents=movmean(Events,600);
So, this is not a solution, but if I plot my averaged vector against the time it will look like this:
t=1:length(SmoothedEvents); % I used a different vector for x-axis in the plot underneath
plot(t,SmoothedEvents);
![movmean.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/270526/movmean.png)
Does anyone have a suggestion how to create a 1-dimensional heatmap (or something similar - see above) from my data? Is there even a better approach than averaging the vector?
0 Comments
Accepted Answer
KSSV
on 8 Feb 2020
YOu can use somehting linke this:
x = 0:.05:2*pi;
y = sin(x);
z = zeros(size(x));
col = x; % This is the color, vary with x in this case.
surface([x;x],[y;y],[z;z],[col;col],...
'facecol','no',...
'edgecol','interp',...
'linew',5);
colorbar
More Answers (0)
See Also
Categories
Find more on Data Distribution Plots in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!