How can I retrieve data from an histogram?

172 views (last 30 days)
Hi Everyone,
I have created a figure using histfit(NUMERIC1,n,'normal') where 'NUMERIC1' is the vector, 'n' the number of histograms i want to plot and 'normal' refers to the normal distribution
Once the figure is plotted I get the normal distribution of the vector 'NUMERIC1'. Now, I want to retrieve the data (so the value of the vector 'NUMERIC1') that are contained in each bar. How can I do that?
Thanks,
Matteo

Accepted Answer

Adam
Adam on 2 Mar 2015
hHist = histfit( rand(100,1), 3, 'normal' )
hHist(1).YData
will give you the numbers if you extract the values from what that gives you.
hHist should be a vector of two graphics handles, the first is a patch that renders the bar chart (the 2nd is a Line object).
Because it is a patch object you get the YData out in slightly less obvious format than you would for a line plot, but the values you want are obvious from its result.
  9 Comments

Sign in to comment.

More Answers (1)

Chuck
Chuck on 26 Sep 2017
In newer versions of MATLAB, all you need to do is:
counts = h.Values
This will give you the number of values in each bin. You can change the name after the dot above to any of the following:
'BinCounts', 'BinCountsMode', 'BinEdges', 'BinLimits', 'BinLimitsMode', 'BinMethod', 'BinWidth', 'BusyAction', 'ButtonDownFcn', 'CreateFcn', 'Data', 'DeleteFcn', 'DisplayName', 'DisplayStyle', 'EdgeAlpha', 'EdgeColor', 'FaceAlpha', 'FaceColor', 'HandleVisibility', 'HitTest', 'Interruptible', 'LineStyle', 'LineWidth', 'Normalization', 'NumBins', 'Orientation', 'Parent', 'PickableParts', 'Selected', 'SelectionHighlight', 'Tag', 'UIContextMenu', 'UserData', 'Visible', 'Categories'
For example, to call the bin limits:
h.BinLimits
  1 Comment
Gonzalo Agudelo
Gonzalo Agudelo on 28 Apr 2019
You were able to aquire the number of values per bin, but could you get the values themselves?

Sign in to comment.

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!