MATLAB: Bar Graph Stacked with Negative and Positive values

bargraphplotstack

Hi.

I'm trying to get a plot to act like the graph function in excel that stacks values together. It does this by putting all positive values on the positive part of the axis, and the negative values on the negative side.

Unfortunatly when I use bar(X,'stack') with matlab it doesn't do this.

Is there any way to get this same functionality? Thanks.

Best Answer

I think that I figured this out. The trick is to do two graphs and to seperate out the positive and negative values:

>> X = rand(4,3) - 0.5;
>> Xneg = X;
>> Xneg(Xneg>0) = 0;
>> Xpos = X;
>> Xpos(Xpos<0) = 0;
>> hold on
>> bar(Xneg,'stack')
>> bar(Xpos,'stack')
>> hold off

Related Solutions

MATLAB: Bar plot with negative and positive values, stacked, and with non-zero base value

As the cyclist said, I have to adjust my algorithm to R2019b. They solution is to use two y axes. Here's the code

close all; clear all; clc;
% create data
basevalue = 10;
rng(4);       
x = -1 + 2*rand(4,3);
% bar plot
yyaxis left
b1 = bar(x, 'stacked');
set(b1, {'FaceColor'}, {[51 153 255]/255; [204 229 255]/255; [0 76 153]/255});
y_left = [-2 3];
axis([-inf inf y_left]);
% line plot 
yyaxis right
p = plot(basevalue + sum(x,2));
p(1).Color = 'red';
axis([-inf inf y_left + basevalue]);

which produces

I have also to admit: Stacking negative with positive values is actually easier in R2019b.

MATLAB: How to find the 80 and 20 percent positions on a gaussian profile – Penumbral width

HELLO Luis

attached your code , beefed up with the attached function (computes the coordinates of crossing point of your data with given y threshold)

x = doseProfile(:,1);
D = doseProfile(:,2);
% positive x , D = 20 and 80 positions
ind = find(x>=0);
xpos = x(ind);
Dpos = D(ind);
% [ind_pos,t0_pos,s0_pos,ind_neg,t0_neg,s0_neg] = crossing_V7(S,t,level,imeth)
[~,~,~,~,xpos20,~] = crossing_V7(Dpos,xpos,20,'linear');
[~,~,~,~,xpos80,~] = crossing_V7(Dpos,xpos,80,'linear');
% x distance

XDpos = xpos20-xpos80
% negative x , D = 20 and 80 positions
ind = find(x<=0);
xneg = x(ind);
Dneg = D(ind);
[~,xneg20,~,~,~,~] = crossing_V7(Dneg,xneg,20,'linear');
[~,xneg80,~,~,~,~] = crossing_V7(Dneg,xneg,80,'linear');
% x distance
XDneg = xneg80-xneg20
plot(x,D,xpos20,20,'+',xpos80,80,'+',xneg20,20,'+',xneg80,80,'+');grid

Best Answer

Related Solutions

MATLAB: Bar plot with negative and positive values, stacked, and with non-zero base value

MATLAB: How to find the 80 and 20 percent positions on a gaussian profile – Penumbral width

Related Question