Issue with sgtitle and subplots. and question about applying a gradient hue to a lineplot

Question

Teshan Rezel 2022-9-20

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1808720-issue-with-sgtitle-and-subplots-and-question-about-applying-a-gradient-hue-to-a-lineplot

评论： Star Strider 2022-9-23

采纳的回答： Star Strider

在 MATLAB Online 中打开

Hi folks,

I have the following code with an issue.

The sgtitle seems to appear in the output window but when the figure is opened in its own window, the title disappears!

Also, is it possible to apply a gradient hue to each line depending on another variable (temperature)?

Is there a way around this? My code is as follows:

for i = 1
    figure;   
    myTitle = sprintf('VRA Parameters versus %s', myIDData{i});
    sgtitle(myTitle);
    for j = 1:14
        subplot(7, 2, j);
        plot(myData{i}, myData{j});
        xlabel(myIDData{i}, "FontWeight","bold");
        ylabel(myIDData{j}, "FontWeight","bold");
        set(gca, 'xdir', 'reverse');
        xlim([0 100]);
    end
end

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Answer 1

Star Strider 2022-9-20

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1808720-issue-with-sgtitle-and-subplots-and-question-about-applying-a-gradient-hue-to-a-lineplot#answer_1057270

编辑：Star Strider 2022-9-20

在 MATLAB Online 中打开

It may be cut off because of the limits on the figure 'Position' or 'OuterPosition' property.

See if something like:

Fig = gcf;

pos = Fig.OuterPosition

Fig.OuterPosition = pos + [0 -200 0 200];

shifting it down by 200 and then increasing its height by 200 solves the problem.

figure

plot(1:10, randn(1,10))

grid

title('Title')

figure

plot(1:10, randn(1,10))

grid

title('Title')

Fig = gcf;

pos = Fig.OuterPosition;

Fig.OuterPosition = pos + [0 -200 0 200];

See the figure documentation on Position and Size for more information and other options to experiment with.

EDIT — (20 Sep 2022 at 15:40)

I am not certain about the gradient hue. See the patch documentation section on Create Multicolored Line for one approach.

.

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Star Strider 2022-9-20

在 MATLAB Online 中打开

I am not certain how you are saving it and then loading it, since those details are missing.

It seems to work correctly here:

LD1 = load(websave('myData','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1130780/myData.mat'));

myData = LD1.myData;

LD2 = load(websave('myID','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1130785/myID.mat'));

myIDData = LD2.myIDData;

for i = 1

figure;

myTitle = sprintf('VRA Parameters versus %s', myIDData{i});

sgtitle(myTitle);

for j = 1:14

subplot(7, 2, j);

plot(myData{i}, myData{j});

xlabel(myIDData{i}, "FontWeight","bold");

ylabel(myIDData{j}, "FontWeight","bold", 'FontSize',6);

set(gca, 'xdir', 'reverse');

xlim([0 100]);

end

Fig = gcf;

pos = Fig.OuterPosition;

Fig.OuterPosition = pos + [0 -800 0 800]; % Resize (Different Parameters From Original)

saveas(gcf, 'Test20221920','png') % Write Figure As '.png' File

I2 = imread('Test20221920.png'); % Import Figure & Display

figure

image(I2)

Ax = gca;

Ax.XColor = 'none';

Ax.YColor = 'none';

Fig = gcf;

pos = Fig.OuterPosition;

Fig.OuterPosition = pos + [0 -800 0 800]; % Resize To Match Original

I reduced the ylabel font size to keep them from running into each other. The code is otherwise unchanged.

I am not certain what you want to do with the line colours, so I will leave that for the time being. The patch link I posted earlier should do what you want.

.

Star Strider 2022-9-23

在 MATLAB Online 中打开

My approach works for me.

I do not have all your data or apparently enough of your code to reproduce the problem, so I cannot run your code to see what the problem is.

I doubt that this could be a graphics driver or renderer problem, however it would be best for you to be certain the drivers are up-to-date. Use the rendererinfo function to determine that. The opengl function will be removed, however it now still exists, so experimenting with it could be an option as well.

Example —

ri = rendererinfo
ri = struct with fields:
    GraphicsRenderer: 'OpenGL Software'
              Vendor: 'Brian Paul'
             Version: '2.1 Mesa 17.1.3'
      RendererDevice: 'Mesa X11'
             Details: [1×1 struct]
ri.Details
ans = struct with fields:
             HardwareSupportLevel: 'None'
    SupportsDepthPeelTransparency: 1
       SupportsAlignVertexCenters: 0
        SupportsGraphicsSmoothing: 0
                   MaxTextureSize: 16384
               MaxFrameBufferSize: 16384
opengl info
                          Version: '2.1 Mesa 17.1.3'
                           Vendor: 'Brian Paul'
                         Renderer: 'Mesa X11'
                   MaxTextureSize: 16384
                           Visual: 'Visual 0x41, (RGBA 32 bits (8 8 8 8), Z depth 16 bits, Hardware acceleration, Double buffer, Antialias 0 samples)'
                         Software: 'true'
             HardwareSupportLevel: 'none'
        SupportsGraphicsSmoothing: 0
    SupportsDepthPeelTransparency: 1
       SupportsAlignVertexCenters: 0
                       Extensions: {152×1 cell}
               MaxFrameBufferSize: 16384

.

Teshan Rezel 2022-9-23

@Star Strider apologies, I restarted matlab and it seems to work now! I'm not sure what the issue was but it seems to have been resolved!

Star Strider 2022-9-23

As always, my pleasure!

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Issue with sgtitle and subplots. and question about applying a gradient hue to a lineplot

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Issue with sgtitle and subplots. and question about applying a gradient hue to a lineplot

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