ThingSpeak data tips Matlab Visualization Plot
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I want to create a ThingSpeak Matlab Visualization Plot with data tips (similar to the defaut ThingSpeak plot visualization).
When I enable this with after tge plot with:
dcm = datacursormode;
dcm.enable = "on";
I get data tips that say how long ago the plot was updated ("seconds ago").
So I tried to define an update function (from an example). But that did not help.
Seeing the Matlab code that generates the default ThingSpeak plot would likely answer my question...but I could not find it.
dcm.UpdateFcn = @displayCoordinates;
function txt = displayCoordinates(~, info)
txt = {sprintf('X: %.5f', info.Position(1)), sprintf('Y: %.5f', info.Position(2))};
end
采纳的回答
Christopher Stapels
2021-3-29
1 个投票
Some of the features of ThingSpeak field plots are not available on custom visualizations.
Interactive plots from custom visualizations are not presently available.
You can create a custom visualization that provides the last update text on the plot itself at the time the plot was generated (not at mouse hover time)
It is possible to create interactive plots with ThingSpeak data in MATLAB Online or MATLAB desktop. Here is a video that shows how you can generate an IoT data explorer app in MATLAB.
3 个评论
douglas freymann
2021-5-22
Is there a plan or timeline for allowing interactive plots (i.e. cursor moves to point, value pops up) for custom visualizations?
I've been banging on head on this for some time now, glad I found this answer so I can give up.
Konstantin
2025-1-20
Without intercativity these custom visualization charts are pretty much useless...
Christopher Stapels
2025-1-24
Consider using MATLAB online for fully interactive plots. I think you can share a lot of important data without interactive plots. Using text labels or creative scaling, or multiple tiled plots, you can still share the information you are trying to share with the consumers of your plots.
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