How to Plot Numbers on top of Bar graphs?

566 views (last 30 days)
Assume we have this as data
Y=[198 138 172 188 190 192];
bar(Y);
How would I go about plotting the Y-values of each of the bars on top of the bars? So each bar would show its value on top of it.

Accepted Answer

Chad Greene
Chad Greene on 7 Aug 2017
Edited: Chad Greene on 7 Aug 2017
Use the text function like this:
Y=[198 138 172 188 190 192];
bar(Y);
text(1:length(Y),Y,num2str(Y'),'vert','bottom','horiz','center');
box off
  3 Comments
alankrita  asthana
alankrita asthana on 16 Nov 2017
hi @chad greene. i am trying to use the same command to display the Y values on top of my bar graph. it isnt working. kindly help
Chad Greene
Chad Greene on 20 Nov 2017
The phrase "it isn't working" does not contain enough information to help. I suggest reading this, then start another question with specifics about the issue you're having.

Sign in to comment.

More Answers (4)

Johannes Stoerkle
Johannes Stoerkle on 21 Feb 2020
Edited: Johannes Stoerkle on 21 Feb 2020
As an extension, I found a good approach if one wants to plot the number on the top of bars, which are displayed in several groups. Therefore, I estimate the correction for the text x-Position using an exp-function, which is fitted to my empirical results.
For instance. If you consider 3 categories and 7 different models (determined in first line) it results:
dataSample = reshape([36 2:21],3,7)';
figure
catStrArray = {'category1','category2','category3'};
catArray = categorical(catStrArray);
catArray = reordercats(catArray,catStrArray);
bar(catArray,dataSample')
nModel = size(dataSample,1);
nCat = size(dataSample,2);
xPosAmpl = 0.3682626-0.3298725*exp(-0.407004*(nModel-1)); % position amplitude
xPosInc = 2*xPosAmpl/(nModel-1);
modelNames = [];
for idxModel=1:nModel
bar_xPos = 1:nCat;
if nModel~=1
bar_xPos = bar_xPos-xPosAmpl+(idxModel-1)*xPosInc;
end
text(bar_xPos,dataSample(idxModel,:),num2str(dataSample(idxModel,:)',...
'%0.0f'),'vert','bottom','horiz','center');
modelNames{idxModel}=sprintf('model%d',idxModel);
end
legend(modelNames)

Edgar Mauricio Ocampo Alvarez
Edited: Edgar Mauricio Ocampo Alvarez on 23 Apr 2022
% this is the best solution:
xtips1 = bar(1).XEndPoints; ytips1 = bar(1).YEndPoints;
text(xtips1, ytips1, num2str(Y1,'%0.2f'),'HorizontalAlignment','left','VerticalAlignment','middle','Rotation',90,'FontSize',8);
xtips2 = bar(2).XEndPoints; ytips2 = bar(2).YEndPoints;
text(xtips2, ytips2, num2str(Y2,'%0.2f'),'HorizontalAlignment','left','VerticalAlignment','middle','Rotation',90,'FontSize',8);

Soyeun Jung
Soyeun Jung on 7 Aug 2017
Hi Ibro, you can run this line of code to display the y-values on top of each bar. See the attached link for related information. https://ch.mathworks.com/matlabcentral/answers/40629-bar-plot-value-on-top
text([1:length(Y)], Y', num2str(Y','%0.2f'),'HorizontalAlignment','center','VerticalAlignment','bottom')

Daniela Maria
Daniela Maria on 14 Jul 2023
promedios = groupsummary(middle, 'Group', 'mean', {'IAAScore', 'MOScore'});
promedio_IAA = promedios.mean_IAAScore;
promedio_MO = promedios.mean_MOScore;
grupos = promedios.Group;
figure;
barras = bar(grupos, [promedio_IAA, promedio_MO]);
% Ajustar las etiquetas del eje x
xticklabels(grupos);
angle(45);
% Ajustar la orientación horizontal de las leyendas del eje x
ax = gca;
ax.XTickLabelRotation = 0;
% Cambiar el relleno de las barras a un gris más claro y el color del borde
color_relleno = [0.8, 0.8, 0.8]; % Gris claro
color_borde_IAA = 'red'; % Color del borde de IAAScore
color_borde_MO = '#4DBEEE'; % Color del borde de MOScore
ancho_borde = 1.5; % Ancho del borde de las barras
for i = 1:numel(barras)
barras(i).FaceColor = color_relleno;
if i == 1
barras(i).EdgeColor = color_borde_IAA;
else
barras(i).EdgeColor = color_borde_MO;
end
barras(i).LineWidth = ancho_borde;
promedios = groupsummary(middle, 'Group', 'mean', {'IAAScore', 'MOScore'});
promedio_IAA = promedios.mean_IAAScore;
promedio_MO = promedios.mean_MOScore;
grupos = promedios.Group;
figure;
barras = bar(grupos, [promedio_IAA, promedio_MO]);
% Ajustar las etiquetas del eje x
xticklabels(grupos);
xtickangle(45);
% Ajustar la orientación horizontal de las leyendas del eje x
ax = gca;
ax.XTickLabelRotation = 0;
% Cambiar el relleno de las barras a un gris más claro y el color del borde
color_relleno = [0.8, 0.8, 0.8]; % Gris claro
color_borde_IAA = 'red'; % Color del borde de IAAScore
color_borde_MO = '#4DBEEE'; % Color del borde de MOScore
ancho_borde = 1.5; % Ancho del borde de las barras
for i = 1:numel(barras)
barras(i).FaceColor = color_relleno;
if i == 1
barras(i).EdgeColor = color_borde_IAA;
else
barras(i).EdgeColor = color_borde_MO;
end
barras(i).LineWidth = ancho_borde;
end
% Añadir etiquetas y título
xlabel('Group');
ylabel('Stinging Frequency');
% Crear la leyenda sin recuadro
legend('IAA', 'MO', 'Box', 'off');
% Obtener el número de observaciones por valor único en la columna 'MOScore' y 'Group'
num_observaciones_MO = groupcounts(middle, {'Group', 'MOScore'});
% Obtener los valores únicos en la columna 'MOScore'
valores_MO = unique(middle.MOScore);
% Agregar el número de observaciones a las barras de MO
for i = 1:numel(barras)
if strcmp(grupos(i), 'MO')
% Obtener las coordenadas x y y de la barra actual
x = barras(i).XData + barras(i).XOffset;
y = barras(i).YData;
% Calcula la posición para colocar la etiqueta
x_pos = x;
y_pos = y + 0.05 * max(y); % Ajusta la posición vertical
% Obtener el número de observaciones para el valor de 'MOScore' correspondiente
num_observaciones = num_observaciones_MO(num_observaciones_MO.Group == grupos(i) & ismember(num_observaciones_MO.MOScore, valores_MO(i)), 3);
% Añadir la etiqueta a la barra actual en color negro y con un tamaño de fuente mayor
text(x_pos, y_pos, num2str(num_observaciones), 'HorizontalAlignment', 'center', 'VerticalAlignment', 'bottom', 'Color', 'k', 'FontSize', 10);
end
end
I'm trying with this codde, but the value doesn't appear and no error

Categories

Find more on Discrete Data Plots in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!