How to apply a diff to histogram object?

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fransec
fransec 2019-5-21
评论： Star Strider 2019-5-27
Hi everybody,
I am trying to apply a difference to an histogram result, which is an object.
H=histogram(matrixvalues,bins);
dH=[0,diff(H)];
but the result is
Undefined function 'diff' for input arguments of type 'matlab.graphics.chart.primitive.Histogram'.
This is because, I think, the H output is an histogram object and not a double.
With the older function hist there are no problems because the output is a double, but with histogram I can not.
Any advices?
Thanks a lot

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Star Strider
Star Strider 2019-5-21
I have no idea what you wwant.
Try this:
dH = diff(H.BinCounts);
To se all the available fields, do this:
histogramFields = get(H)
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fransec
fransec 2019-5-27
It works! Great!
The only (little) problem is that in this way I have to add one edge more (for example the egds vector is a 52-element long), in order to obtain a h.Values of the same length of that produced by older hist function. So my egds vector will start from negative value, for exampe.
Anyway, thanks!

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