Problem adding labels to figure

Question

Juan David Parra Quintero 2023-7-18

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1997468-problem-adding-labels-to-figure

评论： Star Strider 2023-7-18

I am trying to make a figure but when I give the values to the label they are not reflected on the figure. My vector in the X axis was named as x3, however these values are not reflected in the graph. How should I proceed to do this? Thank you very much.

fig=figure(3);
clf;
x3=[Bicicleta; Microbus; Motocicleta; Vehiculo; Tractocamion];
Unrecognized function or variable 'Bicicleta'.
y3 = [1 1 1; 219 65 4; 300 828 36; 986 250 10; 0 0 10];
b3=bar(x3,y3);
ylim([0 1100])
xtips3 = b3(1).XEndPoints;
ytips3 = b3(1).YEndPoints;
labels3 = string(b3(1).YData);
text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...
    'VerticalAlignment','bottom')
xtips3 = b3(2).XEndPoints;
ytips3 = b3(2).YEndPoints;
labels3 = string(b3(2).YData);
text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...
    'VerticalAlignment','bottom')
xtips3 = b3(3).XEndPoints;
ytips3 = b3(3).YEndPoints;
labels3 = string(b3(3).YData);
text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...
    'VerticalAlignment','bottom')
legend('Accidente','Lesionado','Muerte')
xlabel("Agente causante");
ylabel("Número de agentes");

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Matt J 2023-7-18

编辑：Matt J 2023-7-18

Running your code produces errors (see above). Please post sufficient code so that it can be run in the forum and the problem reproduced.

Juan David Parra Quintero 2023-7-18

Matt J muchas gracias ya pude correr el codigo. un saludo muy grande.

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Answer 1

Star Strider 2023-7-18

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1997468-problem-adding-labels-to-figure#answer_1275058

在 MATLAB Online 中打开

One problem is that just after creating the figure the code clears it.

Otherwise perhaps something like this —

fig=figure(3);

% clf;

x3=categorical(["Bicicleta"; "Microbus"; "Motocicleta"; "Vehiculo"; "Tractocamion"]);

y3 = [1 1 1; 219 65 4; 300 828 36; 986 250 10; 0 0 10];

b3=bar(x3,y3);

ylim([0 1100])

xtips3 = b3(1).XEndPoints;

ytips3 = b3(1).YEndPoints;

labels3 = string(b3(1).YData);

text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...

'VerticalAlignment','bottom')

xtips3 = b3(2).XEndPoints;

ytips3 = b3(2).YEndPoints;

labels3 = string(b3(2).YData);

text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...

'VerticalAlignment','bottom')

xtips3 = b3(3).XEndPoints;

ytips3 = b3(3).YEndPoints;

labels3 = string(b3(3).YData);

text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...

'VerticalAlignment','bottom')

legend('Accidente','Lesionado','Muerte', 'Location','NW')

xlabel("Agente causante");

ylabel("Número de agentes");

See the documentation for string and categorical for details on them.

.

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Star Strider 2023-7-18

在 MATLAB Online 中打开

As always, my pleasure!

One option —

fig=figure(3);

% clf;

x3=categorical(["Bicicleta"; "Microbus"; "Motocicleta"; "Vehiculo"; "Tractocamion"]);

y3 = [1 1 1; 219 65 4; 300 828 36; 986 250 10; 0 0 10];

b3=bar(x3,y3, 'FaceColor','flat'); % Set 'FaceColor' To 'flat'

cm = gray(5); % Define 'colormap'

for k = 1:numel(b3)

b3(k).CData = cm(k+1,:); % Loop To Set Colours

end

ylim([0 1100])

xtips3 = b3(1).XEndPoints;

ytips3 = b3(1).YEndPoints;

labels3 = string(b3(1).YData);

text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...

'VerticalAlignment','bottom')

xtips3 = b3(2).XEndPoints;

ytips3 = b3(2).YEndPoints;

labels3 = string(b3(2).YData);

text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...

'VerticalAlignment','bottom')

xtips3 = b3(3).XEndPoints;

ytips3 = b3(3).YEndPoints;

labels3 = string(b3(3).YData);

text(xtips3,ytips3,labels3,'HorizontalAlignment','center',...

'VerticalAlignment','bottom')

legend('Accidente','Lesionado','Muerte', 'Location','NW')

xlabel("Agente causante");

ylabel("Número de agentes");

In order to avoid the colormap ‘extreme values’ (black and white at both ends for the gray colormap), I returned five colours and used the centre three, since that most closely approximates your posted plot image. (This approach uses a variation of the one described in Bar Chart with Colormap Colors.)

.

Juan David Parra Quintero 2023-7-18