bar graph : How to show each bar with different base value ?

Hi,

I would like to show use bar graph. But each bar has different base line. So, I wrote the following codes. However, it gives error. Could you please help me, how to do this with matlab

my codes are;

figure(1);

x=[1 2 3 4]; y1=[928,1417; 2166,3625; 2278,3401; 1,2]; y2=[197,271; 141,212; 34,150; 1,2];

b1 = bar(x,y1, 'facecolor', 'y'); hold on; b2 = bar(x,y2, 'facecolor', 'b');

b1(1).baseValue=928; % <== it gives error here. How to solve this problem ? b1(2).baseValue=2166; b1(3).baseValue=2278;

Answer 1

[dpb]

Apparently you've got an earlier release than R2014b, maybe? The ".dot" notation for properties wasn't implemented prior, use set instead--

set(b(1),'basevalue',928);  % works fine here (R2012b)

However, the rest will have troubles--

   b1(2).baseValue=2166;

the baseline is only a single value for each bar series; hence setting b1(2) to something different than b1(1) will simply replace the first with the second value.

And,

 b1(3).baseValue=2278;

there are only two b1 handles so the above will error on a bounds error.

The only way to have a different baseline per bar will be to have only a single bar per bar plot or make the patch objects directly from primitives.

Answer 2

[S C.Carl]

Thanks for your response

But, I could not solve my problem. My goal is to show each data pair in y1 and y2 at different base.

For instance in y1;

928,1417; ==> base value has to be 928
2166,3625;  ==> base value has to be 2166
2278,3401;  ==> base value has to be 2278
1,2  ==> base value has to be 1

I am using 2015a version. Could you please help me how to do this ?

Answer 3

[Brad Allen]

I was just having this same issue, also couldn't figure it out. It would seem that no matter which way I changed the basevalue (either separate bar charts or using set() or barhandle.BaseValue), it would always change to the last one I set. For example:

data = [1,2,3;4,5,6]';
hbar = bar(data);
set(hbar(1), 'BaseValue', 2);
set(hbar(2), 'BaseValue', 5);
% This results in the BaseValue for both sets = 5

% same happens if you do this
hbar1 = bar(data(:,1),'BaseValue',2);
hold on
hbar2 = bar(data(:,2),'BaseValue',5);
% or if you do this
hbar1 = bar(data(:,1));
hold on
hbar2 = bar(data(:,2));
hbar1.BaseValue = 2;
hbar2.BaseValue = 5;

% It always results in a BaseValue of 5 for both datasets...

It's strange because if you set foo = get(barhandle.BaseValue), you will get a cell array that contains the same basevalue in each cell, but Matlab (R2014b) returns an error if you try to assign a cell array to barhandle.Basevalue.