MATLAB: How to make bar graph come from the bottom for negative numbers

axesaxisbargraphMATLABplotplotting

As title says, I have a plot that will always have negative y-values, but I would like the bars to be coming from negative infinity up to the value, as opposed to 0 down to the value. Any ideas?

Best Answer

Modify the baseline ( link )

Related Solutions

MATLAB: Can the BAR and BARH functions in MATLAB 7.0.1 (R14SP1) handle negative values when plotting a stacked graph

The ability to display negative data values on the negative side of the axis when creating a stacked bar graph using BAR or BARH functions is currently not available in MATLAB.

As a work around, consider the following code

function barExtended(varargin)
% Create a stacked bar graph of both negative and positive values.
%

% Syntax.
% barExtended(Y)
%   Create a new figure window and place the bar plot within it.
%
% barExtended(axes_handle,Y)
%   Place the bar plot with the axes pointed to be axes_handle.
% Parse input.
if nargin == 1
    Y = varargin{1};
else
    Y = varargin{2};
end
% Positive components.
fh(1) = figure;
hP    = bar(gca,Y.*(Y>0),'stacked');
ahP   = gca;
% Negative components.
fh(2) = figure;
hN    = bar(Y.*(Y<0),'stacked');
% Clean up.
if nargin == 1
    set([hP,hN],'parent',ahP);
    delete(fh(2));
else
    set([hP,hN],'parent',varargin{1});
    delete(fh);   
end
end

Following is an illustrative example:

barExtended(rand(5)-rand(5))

As another possible workaround you can also use the function BARX attached with this solution.

MATLAB: All negative number on bottom

>> A = [1,-3,4;-2,5,6;4,2,1]
A =
   1  -3   4
  -2   5   6
   4   2   1
>> S = size(A);
>> [~,R] = sort(A<0,1);
>> C = ones(S(1),1)*(1:S(2));
>> X = sub2ind(S,R,C);
>> A(X)
ans =
   1   5   4
   4   2   6
  -2  -3   1

Best Answer

Related Solutions

MATLAB: Can the BAR and BARH functions in MATLAB 7.0.1 (R14SP1) handle negative values when plotting a stacked graph

MATLAB: All negative number on bottom

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