I want to label each three bars as p1, p2 and p3 for all at the base as the pic attached.. i appreciate any help someone can provide.
MATLAB: Multi bar labeling plot
barbar centerscentergrouped barlabel;plotxx valuexoffsetxtick
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To locate the center of each grouped bar, use the undocumented bar object property, "XOffset" which is the horizontal offset of each bar-center from the group index value.
xCnt are the bar centers.
error=[3.3 2.1;1.1 4];x=[1:2 ;1:2]'; y=[3.5 2.2; 5.2 3.3];h = bar(x,y)hold on% Get bar centers
xCnt = h(1).XData.' + [h.XOffset]; % Alternative: xCnt = get(h(1),'XData').' + cell2mat(get(h,'XOffset')).'; % XOffset is undocumented
errorbar(xCnt(:),y(:),error(:),'*') % <--- If you want 1 errorbar object
% errorbar(xCnt,y,error,'*') % <--- If you want separate errorbar objects, 1 for each bar-group
% errorbar(...,'k*') to make the errorbars black (which is better than yellow)
ylim([-8 18])xticks([1:2])hold off
There are two approaches below. I recommend using the first one where the bars and labeled by the xtick labels. You can rotate them at any angle you wish. The second approach colors each bar and uses a colorbar to identify the color code. This requires a lot more work from the user to match the bar to the color. With a greater number of bars, the colors become too similar.
Also, consider reading the data in as a table instead of using datasets.
Use x tick labels
figure();scaleSelection = strcmp(scale,'like'); % use strcmp(), not "==".
barData = meanVariantsVelocity(scaleSelection); bh = bar(barData);% add x tick labels
ax = bh.Parent; ax.XTick = 1:numel(barData); ax.XTickLabel = variants(scaleSelection);ax.TickLabelInterpreter = 'none'; xtickangle(ax, 45) % or try 90 degrees
Colored bars with colorbar as legend
This is not recommended.
figure();scaleSelection = strcmp(scale,'like'); % use strcmp(), not "==".barData = meanVariantsVelocity(scaleSelection); % use strcmp(), not "==".bh = bar(barData);% set bar color
bh.FaceColor = 'flat'; bh.CData = jet(numel(barData)); % use any colormap you'd like
% Add colorbar with categorical color labels
colormap(bh.CData)cb = colorbar(); caxis([0,numel(barData)])cb.YTick = 0.5 : 1 : numel(barData);cb.TickLabels = variants(scaleSelection);cb.TickLabelInterpreter = 'none'; cb.FontSize = 8; bh.Parent.Position(3) = 0.55; % make the axis narrower to fit the colorbar labels.
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