How to make a specific bar to be hatched with a specific color

Question

bassant tolba 2024-7-31

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2141881-how-to-make-a-specific-bar-to-be-hatched-with-a-specific-color

编辑： DGM 2024-8-6

I have the array y1 which consists of 5 sets, and each set consists of 6 elements. For example, the first set is 0.25 1.14 2.20 0.21 1.09 2.16. I need to make the last three elements in each set to be cross hatched with a specific color I choose.. how can I make it. my code is below

x=[1,2,3,4,5]; 
y1=[0.25 1.14  2.20 0.21 1.09 2.16 ; 0.48 2.26 4.40 0.42 2.20 4.34; 0.72 3.38  6.58 0.74 3.27  5.86 ;1.01 4.56 8.82 0.99 4.34 7.65;1.33 5.76 11.04 1.33 5.50 9.61 ] 
figure 
h1 = bar(y1);  
set(h1, {'DisplayName'}, {'\textbf{Proposed framework without AES}','\textbf{Proposed framework with AES-128}','\textbf{Proposed framework with AES-256}','\textbf{Delay-energy-aware without AES}','\textbf{Delay-energy-aware with AES-128}','\textbf{Delay-energy-aware with AES-256}'}')
set(gca,'TickLabelInterpreter','latex', 'LineWidth', 1,'FontSize',12, 'YMinorTick','on');
legend('Location','northwest','Interpreter','latex', 'FontWeight','bold','FontSize',9.5,...
    'FontName','Palatino Linotype',...
    'Location','best'); 
xlabel('$\textbf{Number of tasks}$','FontWeight','bold','FontSize',12,...
    'FontName','Palatino Linotype','Interpreter','latex');
ylabel('$\textbf{Total delay [S]}$','FontWeight','bold','FontSize',12,...
    'FontName','Palatino Linotype','Interpreter','latex');

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DGM 2024-7-31

See also:

https://www.mathworks.com/matlabcentral/answers/1670649-bar-plot-with-a-hatched-fill-pattern

bassant tolba 2024-8-1

在 MATLAB Online 中打开

Thank you so much for sharing thi interesting link.

I tried to use it. However, I would like to make the legend appear with the hatched color as the bars color. However, this is what I get.. Please, how can I do that ?

Thank you so much

x=[1,2,3,4,5];

y1=[0.25 1.14 2.20 0.21 1.09 2.16 ; 0.48 2.26 4.40 0.42 2.20 4.34; 0.72 3.38 6.58 0.74 3.27 5.86 ;1.01 4.56 8.82 0.99 4.34 7.65;1.33 5.76 11.04 1.33 5.50 9.61 ] % 3 papers with 1.85 enc and dec

y1 = 5x6

0.2500 1.1400 2.2000 0.2100 1.0900 2.1600 0.4800 2.2600 4.4000 0.4200 2.2000 4.3400 0.7200 3.3800 6.5800 0.7400 3.2700 5.8600 1.0100 4.5600 8.8200 0.9900 4.3400 7.6500 1.3300 5.7600 11.0400 1.3300 5.5000 9.6100

%all

figure

h1 = bar(y1);

cm = colororder; % or replace with the desired colormap

hatchfill2(h1(4),'cross','HatchAngle',45,'hatchcolor',cm(1,:));

Unrecognized function or variable 'hatchfill2'.

hatchfill2(h1(5),'cross','HatchAngle',45,'hatchcolor',cm(5,:));

hatchfill2(h1(6),'cross','HatchAngle',45,'hatchcolor',cm(3,:));

h1(4).FaceColor = 'none';

h1(5).FaceColor = 'none';

h1(6).FaceColor = 'none';

set(h1, {'DisplayName'}, {'\textbf{Proposed framework without AES}','\textbf{Proposed framework with AES-128}','\textbf{Proposed framework with AES-256}','\textbf{Delay-energy-aware without AES}','\textbf{Delay-energy-aware with AES-128}','\textbf{Delay-energy-aware with AES-256}'}')

set(gca,'TickLabelInterpreter','latex', 'LineWidth', 1,'FontSize',12, 'YMinorTick','on');

legend('Location','northwest','Interpreter','latex', 'FontWeight','bold','FontSize',9.5,...

'FontName','Palatino Linotype',...

'Location','best');

xlabel('$\textbf{Number of tasks}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylabel('$\textbf{Total delay [S]}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

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Answer 1

DGM 2024-8-1

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2141881-how-to-make-a-specific-bar-to-be-hatched-with-a-specific-color#answer_1493516

编辑：DGM 2024-8-1

在 MATLAB Online 中打开

Here's a start

x = [1,2,3,4,5];

y1 = [0.25 1.14 2.20 0.21 1.09 2.16 ;

0.48 2.26 4.40 0.42 2.20 4.34;

0.72 3.38 6.58 0.74 3.27 5.86;

1.01 4.56 8.82 0.99 4.34 7.65;

1.33 5.76 11.04 1.33 5.50 9.61]; % 3 papers with 1.85 enc and dec

h1 = bar(y1);

% hatchfill parameters

cm = colororder; % or replace with the desired colormap

hfcolor = cm([1 5 3],:); % i'm going to reorder this for convenience

hfstyle = {'cross','cross','cross'};

hfangle = [45 45 45];

% generate hatch fills on the bar objects

hhf = gobjects(6,1);

for k = 1:3

hhf(k) = hatchfill2(h1(k+3),hfstyle{k}, ...

'HatchAngle',hfangle(k), ...

'HatchColor',hfcolor(k,:), ...

'HatchDensity',50); % see note

h1(k+3).FaceColor = 'none';

end

% figure setup

set(gca,'TickLabelInterpreter','latex', 'LineWidth', 1,'FontSize',12, 'YMinorTick','on');

xlabel('$\textbf{Number of tasks}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylabel('$\textbf{Total delay [S]}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylim([0 12])

% assemble the legend

legendstr = {'\textbf{Proposed framework without AES}', ...

'\textbf{Proposed framework with AES-128}', ...

'\textbf{Proposed framework with AES-256}', ...

'\textbf{Delay-energy-aware without AES}', ...

'\textbf{Delay-energy-aware with AES-128}', ...

'\textbf{Delay-energy-aware with AES-256}'};

[~,hlobj] = legendflex(h1,legendstr,'Interpreter','latex', ...

'Anchor',{'nw','nw'}, ...

'Buffer',[10 -10], ...

'FontWeight','bold', ...

'FontSize',9.5, ...

'FontName','Palatino Linotype');

% hatch the legend patches to match the bars

for k = 4:6

hhf(k) = hatchfill2(hlobj(k+6).Children,hfstyle{k-3}, ...

'HatchAngle',hfangle(k-3), ... % use the same parameters as before

'HatchColor',hfcolor(k-3,:), ...

'HatchDensity',20); % but density is different

end

As I think Walter discussed in that thread, the angle and density of the fill generated by hatchfill()/hatchfill2() depends on the geometry of the parent axes. That makes it problematic to try to get the hatch patterns to match exactly between the bar chart and the patch in the legend object. You may have to play with trying to adjust the two density parameters as best you can.

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DGM 2024-8-4

在 MATLAB Online 中打开

Let's back up for a minute and try to make the previous example easier to use.

% the data

x = [1,2,3,4,5];

y1 = [0.25 1.14 2.20 0.21 1.09 2.16 ;

0.48 2.26 4.40 0.42 2.20 4.34;

0.72 3.38 6.58 0.74 3.27 5.86;

1.01 4.56 8.82 0.99 4.34 7.65;

1.33 5.76 11.04 1.33 5.50 9.61];

% parameters for all bars

CT = lines(7); % or replace with the desired colormap

CT = CT([1 2 3 1 5 3],:); % rearrange the order as before

% which bars to hatch

% the hatchfill parameters should be (at least) the same length

hatchbars = [4 5 6];

% hatchfill parameters

hfstyle = {'cross','cross','cross'};

hfangle = [45 45 45];

% create the initial plot

colororder(CT); % set the color order

hb = bar(y1);

% generate hatch fills on the bar objects

nbars = numel(hb); % number of total bars

nhbars = numel(hatchbars); % number of hatched bars

hhf = gobjects(nbars,1);

for k = 1:nhbars

hhf(k) = hatchfill2(hb(hatchbars(k)),hfstyle{k}, ...

'HatchAngle',hfangle(k), ...

'HatchColor',CT(hatchbars(k),:), ...

'HatchDensity',50); % see note

hb(hatchbars(k)).FaceColor = 'none';

end

% figure setup

set(gca,'TickLabelInterpreter','latex', 'LineWidth', 1,'FontSize',12, 'YMinorTick','on');

xlabel('$\textbf{Number of tasks}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylabel('$\textbf{Total delay [S]}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylim([0 max(ylim)]) % this is smarter than before

% assemble the legend

legendstr = {'\textbf{Proposed framework without AES}', ...

'\textbf{Proposed framework with AES-128}', ...

'\textbf{Proposed framework with AES-256}', ...

'\textbf{Delay-energy-aware without AES}', ...

'\textbf{Delay-energy-aware with AES-128}', ...

'\textbf{Delay-energy-aware with AES-256}'};

[~,hlobj] = legendflex(hb,legendstr,'Interpreter','latex', ...

'Anchor',{'nw','nw'}, ...

'Buffer',[10 -10], ...

'FontWeight','bold', ...

'FontSize',9.5, ...

'FontName','Palatino Linotype');

% hatch the legend patches to match the bars

for k = 1:nhbars

hhf(hatchbars(k)) = hatchfill2(hlobj(hatchbars(k)+nbars).Children,hfstyle{k}, ...

'HatchAngle',hfangle(k), ... % use the same parameters as before

'HatchColor',CT(hatchbars(k),:), ...

'HatchDensity',20); % but density is different

end

In this revised example, it should be a lot easier to control which bars get hatched. We just need to make sure the color table and parameter vectors are long enough to handle the respective numbers of bars. All the indexing should be taken care of.

Now that it's easier to use, changing it to suit the new requirements really just involves changing the variable hatchbars and adjusting the parameters and legend strings to suit. The rest of the code is the same.

figure

% the data

x = [1,2,3,4,5];

y1 = [6 41.70; % i'm changing this so that we can see the fill

0.6 44.19;

0.6 47.89;

0.6 51.33;

0.6 51.95];

% parameters for all bars

CT = lines(7); % or replace with the desired colormap

% which bars to hatch

% the hatchfill parameters should be the (at least) same length

hatchbars = [1];

% hatchfill parameters

hfstyle = {'cross'};

hfangle = [45];

% create the initial plot

colororder(CT); % set the color order

hb = bar(y1);

% generate hatch fills on the bar objects

nbars = numel(hb); % number of total bars

nhbars = numel(hatchbars); % number of hatched bars

hhf = gobjects(nbars,1);

for k = 1:nhbars

hhf(k) = hatchfill2(hb(hatchbars(k)),hfstyle{k}, ...

'HatchAngle',hfangle(k), ...

'HatchColor',CT(hatchbars(k),:), ...

'HatchDensity',50); % see note

hb(hatchbars(k)).FaceColor = 'none';

end

% figure setup

set(gca,'TickLabelInterpreter','latex', 'LineWidth', 1,'FontSize',12, 'YMinorTick','on');

xlabel('$\textbf{Number of tasks}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylabel('$\textbf{Total delay [S]}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylim([0 max(ylim)])

% assemble the legend

legendstr = {'\textbf{Thing 1 (hatched)}', ...

'\textbf{Thing 2 (plain)}'};

[~,hlobj] = legendflex(hb,legendstr,'Interpreter','latex', ...

'Anchor',{'nw','nw'}, ...

'Buffer',[10 -10], ...

'FontWeight','bold', ...

'FontSize',9.5, ...

'FontName','Palatino Linotype');

% hatch the legend patches to match the bars

for k = 1:nhbars

hhf(hatchbars(k)) = hatchfill2(hlobj(hatchbars(k)+nbars).Children,hfstyle{k}, ...

'HatchAngle',hfangle(k), ... % use the same parameters as before

'HatchColor',CT(hatchbars(k),:), ...

'HatchDensity',10); % but density is different

end

As before, the relative density of the hatchfills in the legend may need to be tweaked. The aspect ratio of the fill in the legend is still distorted, but that's due to the relative aspect ratios of the plot box and the legend box. As far as I know, there isn't a simple way to fix that without modifying hatchfill2().

bassant tolba 2024-8-6

编辑：bassant tolba 2024-8-6

在 MATLAB Online 中打开

Thank you for your comment. However, I could make the bar blue, but still the legend orange. I cannot change it
below is the figure attached

DGM 2024-8-6

编辑：DGM 2024-8-6

在 MATLAB Online 中打开

That's odd. Again, I'm running an older version, so let me check here with the full code:

% the data

x = [1,2,3,4,5];

y1 = [6 41.70; % i'm changing this so that we can see the fill

0.6 44.19;

0.6 47.89;

0.6 51.33;

0.6 51.95];

% parameters for all bars

CT = lines(7); % or replace with the desired colormap

CT = CT([1 1],:);

% which bars to hatch

% the hatchfill parameters should be the (at least) same length

hatchbars = [1];

% hatchfill parameters

hfstyle = {'cross'};

hfangle = [45];

% create the initial plot

colororder(CT); % set the color order

hb = bar(y1);

% generate hatch fills on the bar objects

nbars = numel(hb); % number of total bars

nhbars = numel(hatchbars); % number of hatched bars

hhf = gobjects(nbars,1);

for k = 1:nhbars

hhf(k) = hatchfill2(hb(hatchbars(k)),hfstyle{k}, ...

'HatchAngle',hfangle(k), ...

'HatchColor',CT(hatchbars(k),:), ...

'HatchDensity',50); % see note

hb(hatchbars(k)).FaceColor = 'none';

end

% figure setup

set(gca,'TickLabelInterpreter','latex', 'LineWidth', 1,'FontSize',12, 'YMinorTick','on');

xlabel('$\textbf{Number of tasks}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylabel('$\textbf{Total delay [S]}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylim([0 max(ylim)])

% assemble the legend

legendstr = {'\textbf{Thing 1 (hatched)}', ...

'\textbf{Thing 2 (plain)}'};

[~,hlobj] = legendflex(hb,legendstr,'Interpreter','latex', ...

'Anchor',{'nw','nw'}, ...

'Buffer',[10 -10], ...

'FontWeight','bold', ...

'FontSize',9.5, ...

'FontName','Palatino Linotype');

% hatch the legend patches to match the bars

for k = 1:nhbars

hhf(hatchbars(k)) = hatchfill2(hlobj(hatchbars(k)+nbars).Children,hfstyle{k}, ...

'HatchAngle',hfangle(k), ... % use the same parameters as before

'HatchColor',CT(hatchbars(k),:), ...

'HatchDensity',10); % but density is different

end

You might want to double check that the code you're using follows this example. I suspect there's some part of the older example lingering in what you've adapted.

The object in question is a descendant patch object within hlobj. For N legend entries, hlobj will contain N text objects, followed by N hggroups. Within each group, there may be different things. For this normal bar, it will contain a lone patch object. For hatched bars, it will contain a line object and a patch object.

% hlobj contains the legend text and patch objects
hlobj % inspect the contents
hlobj = 
  4x1 graphics array:

  Text     (\textbf{Thing 1 (hatched)})
  Text     (\textbf{Thing 2 (plain)})
  Group    (\textbf{Thing 1 (hatched)})
  Group    (\textbf{Thing 2 (plain)})
% inspect the legend patch associated with the solid bars
findobj(hlobj(4),'type','patch')  % the facecolor is blue
ans = 
  Patch (\textbf{Thing 2 (plain)}) with properties:

    FaceColor: [0 0.4471 0.7412]
    FaceAlpha: 1
    EdgeColor: [0 0 0]
    LineStyle: '-'
        Faces: [1 2 3 4 5]
     Vertices: [5x2 double]

  Use GET to show all properties

This might be an inroads to troubleshooting. If nothing else, the face color can be directly set using this information.

Otherwise, if you want help finding the problem in the code as you've written it, I'd need to see how you've adapted it.

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Answer 2

dpb 2024-7-31

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2141881-how-to-make-a-specific-bar-to-be-hatched-with-a-specific-color#answer_1493076

编辑：dpb 2024-7-31

在 MATLAB Online 中打开

x=[1,2,3,4,5];

y1=[0.25 1.14 2.20 0.21 1.09 2.16 ; 0.48 2.26 4.40 0.42 2.20 4.34; 0.72 3.38 6.58 0.74 3.27 5.86 ;1.01 4.56 8.82 0.99 4.34 7.65;1.33 5.76 11.04 1.33 5.50 9.61 ];

figure

hB = bar(y1);

C=[0.9 0.9 0.9]; % custom color rgb triplet

set(hB,{'FaceColor'},{'flat'}); % must use face color to control individual bars -- pain, but is what it is

for i=4:6 % last threee of six -- generalize for function instead hardcoding

hB(i).CData=C; % and set those to the custom color

end

hAx=gca;

set(hB, {'DisplayName'}, {'\textbf{Proposed framework without AES}','\textbf{Proposed framework with AES-128}','\textbf{Proposed framework with AES-256}','\textbf{Delay-energy-aware without AES}','\textbf{Delay-energy-aware with AES-128}','\textbf{Delay-energy-aware with AES-256}'}')

set(hAx,'TickLabelInterpreter','latex', 'LineWidth', 1,'FontSize',12, 'YMinorTick','on');

legend('Location','northwest','Interpreter','latex', 'FontWeight','bold','FontSize',9.5,...

'FontName','Palatino Linotype',...

'Location','best');

xlabel('$\textbf{Number of tasks}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

ylabel('$\textbf{Total delay [S]}$','FontWeight','bold','FontSize',12,...

'FontName','Palatino Linotype','Interpreter','latex');

Color is not that bad; cross-hatching is a sore point in MATLAB -- after all these years there still are no builtin hatching patterns. There are several attempts with File Exchange submittals but I've found none that are really satisfactory, unfortunately. I haven't looked into it for quite a while now, however, ... but why not a standard part of HG2 is a glaring weakness wouldn't count on being fixed any time realsoonnow™; I began complaining about and submitting enhancement requests with the original 3.1 release some 30 years ago by now...I finally gave it up as lost cause.

ADDENDUM/ERRATUM

Oh, except on reading the Q?, again, you want the cross-hatching of a given color, not the bars...that'll be whether one of the FEX submissions will actually work satisfactorily now or take drawing the lines directly.

<hatchfill2> says it supports bar now; as said, I've not tried recently; the version on the FEX page indicates it is later than when I gave up the consulting gig and the need went away with it, so you may have a reasonable chance now.