Set Face Color of Bars in Bar Graph?

I am trying to set the face color of all of the bars of a bar graph in MATLAB while using the 'histc' option to have them all line up, so the trends I am trying to highlight can easily be observed. However, when trying 5 different ways to set the color of the bars, it always comes up as the same color (picture attached). The plotting code using an arbitrary x-y combination is:

bar(x,y,'histc');

To set the color to red, I have tried:

bar(x,y,'histc','r');

bar(x,y,'r','histc');

bar(x,y,'histc','FaceColor','r');

b = bar(x,y,'histc'); b(1:end).FaceColor = 'red'

b = bar(x,y,'histc'); set(b,'FaceColor','r');

None of the above changes the face colors of the bars to red. The full code I am using that generates the graph is attached. Any help with this would greatly appreciated as it seems it should be something pretty simple to do.

Full Code:

figure(1)

bar(datenumber,deltapHie,'histc');

hold on

zeroline = refline(0,0);

hold off

set(zeroline,'Color','k','LineWidth',1.4);

ylim([-0.96 0.36]);

set(gca,'FontSize',11);

set(gca,'ytick',[-0.9 -0.75 -0.6 -0.45 -0.3 -0.15 0 0.15 0.3]);

ytix = get(gca,'ytick');

ytixlbl = regexp(sprintf('%.2f\n',ytix), '\n', 'split');

set(gca,'yticklabel',ytixlbl(1:end-1));

ylabel('\DeltapH^{INT-EXT}_{final}','FontSize',12,'FontWeight','bold');

date_frmt = 'dd-mmm-yyyy';

beginTime = '27-Jan-2016';

endTime = '11-Feb-2016';

xlim([datenum(beginTime,date_frmt) datenum(endTime,date_frmt)]);

xticks(736356:3:736371);

dateformat = 1;

datetick('x',dateformat,'keeplimits','keepticks');

xlabel('Date','FontSize',12,'FontWeight','bold');

box on

Answer 1

[Star Strider]

What version of MATLAB are you using?

In R2017a, this works perfectly for me:

x =  datenum(now) - [1:500];
y = randn(1, 500);

figure(1)
hb = bar(x, y, 'histc');
set(hb, 'FaceColor','r', 'EdgeColor','r')
datetick('x', 'dd-mmm-yyyy', 'keeplimits', 'keepticks')

I don’t see any problems in your code. It could be that your bars ar so narrow that you’re not seeing the 'FaceColor' but only 'EdgeColor'. See if adding 'EdgeColor','r' makes a difference.

[Image Analyst]

Or 'edgeColor', 'none'

[Star Strider]

That would would work.

It depends what OP wants.