MATLAB: Is it not possible to use HIST and HISTC with the Parameter/Value Syntax in MATLAB 7.9 (R2009b)

histhistcMATLABparametersyntaxvalue

I want to use the HIST and HISTC function in MATLAB 7.9 (R2009b). Unfortunately it is not possible to use the Parameter/Value syntax with these two functions:

 The doc lists ‘style’ options. In the first it is only mention grouped or stacked but the points below mentions histc and hist as well.
 web([docroot '/techdoc/ref/barh.html'])

Aswell there is this information:

 Note   When you use either the hist or histc option, you cannot also use parameter/value syntax. These two options create graphic objects that are patches rather than barseries. See Backward-Compatible Versions for details.

Best Answer

HIST and HISTC cannot be used with the Parameter/Value Syntax in MATLAB.

As a workaround you can adapt the following example to set these properties using the SET and GET accessor methods associated with each Handle Graphics object created:

x = -2.9:0.1:2.9;
y = randn(10000,1);
data = histc(y,x);
h = bar(x,data)
set(h,'FaceColor','red')

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MATLAB: Can HIST take parameters such as FaceColor and EdgeColor

As a workaround, you can use the following example code as a guide:

% Create some sample data
x = -2.9:0.1:2.9;
y = randn(10000,1);
% Exploit the use of HIST where we return data instead of a plot                                      
[n1,x1]=hist(y,x);
[n2,x2]=hist(y+6,x+6);
% Use the output of HIST to create BAR plots
% Note that this exploits the undocumented 'hist' option, used solely by HIST
% It is not recommended that you rely on this behavior, but rather you use it as a workaround
% Return handles on these calls so we can manipulate them later
h1=bar(x1,n1,'hist');
hold on
h2=bar(x2,n2,'hist');
% Now just modify the color of one of the BAR plots
set(h2,'facecolor','red')

MATLAB: How to find the x value from cumsum

x never equals 7000. Not sure which bar graph you were looking at but none of them have an x value of 7000. Now if you want the x value where y first exceeds 7000, then you can look at the last few lines I tacked on to the bottom of their example (which is the top several lines):

clear
clc;
workspace;  % Make sure the workspace panel is showing.
format longg;
format compact;
fontSize = 20;
x = -2.9:0.1:2.9;
y = randn(10000,1);
figure(1)
hist(y,x);
xlabel('x', 'FontSize', fontSize);
ylabel('y', 'FontSize', fontSize);
title('Histogram', 'FontSize', fontSize);
% Calculate number of elements in each bin
n_elements = histc(y,x);
% Calculate the cumulative sum of these elements using cumsum
c_elements = cumsum(n_elements)
% Plot the cumulative distribution like a histogram using bar:
figure(2)
bar(x,c_elements,'BarWidth',1);
grid on;
% Enlarge figure to full screen.
set(gcf, 'units','normalized','outerposition',[0 0 1 1]);
% Find out x when c_elements = 7000
% first find the index.
x7000Index = find(c_elements >= 7000, 1, 'first')
% Then find the x value for that index.
x7000 = x(x7000Index);
message = sprintf('The cumulative sum first exceeds 7000\nat an x value of %.1f', x7000);
uiwait(msgbox(message));

Best Answer

Related Solutions

MATLAB: Can HIST take parameters such as FaceColor and EdgeColor

MATLAB: How to find the x value from cumsum

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