How to save a figure of a specific size with exportgraphics

Question

Blue 2021-10-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1562831-how-to-save-a-figure-of-a-specific-size-with-exportgraphics

评论： Blue 2021-10-14

Hello,

I simply want to export a figure of a specific size (6 x 9 inches) with the function exportgraphics as described here (https://www.mathworks.com/help/matlab/creating_plots/save-figure-at-specific-size-and-resolution.html)

The following code doesnt return any errors but the figure is empty. Any tips ?

Thank you,

t = tiledlayout(1,1,'Padding','tight');
t.Units = 'inches';
t.OuterPosition = [0.25 0.25 6 9];
nexttile;
figure
subplot(2,1,1);
x = linspace(0,10);
y1 = sin(x);
plot(x,y1)
subplot(2,1,2); 
y2 = sin(5*x);
plot(x,y2)
exportgraphics(t, 'test.jpg', 'Resolution', 300)

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Mario Malic 2021-10-13

在 MATLAB Online 中打开

Hi,

You need to specify the parent figure to use the exportgraphics.

I am unable to figure out completely what's happening in the code.

This might do it.

fig = gcf;
exportgraphics(fig, 'test.jpg', 'Resolution', 300)

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Answer 1

Dave B 2021-10-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1562831-how-to-save-a-figure-of-a-specific-size-with-exportgraphics#answer_808016

编辑：Dave B 2021-10-13

在 MATLAB Online 中打开

you created a tiledlayout in one figure, set some of its characteristics but didn't add anything to it. Then you created a new figure with subplots, then you exported the (empty) tiledlayout.

Instead, use tiledlayout to set your layout shape, drop the call to figure, and use nexttile in place of the calls to subplot:

t = tiledlayout(2, 1, 'Padding', 'tight');
t.Units = 'inches';
t.OuterPosition = [0.25 0.25 3 3];
nexttile;
x = linspace(0,10);
y1 = sin(x);
plot(x,y1)
nexttile;
y2 = sin(5*x);
plot(x,y2)
exportgraphics(t, 'test.jpg', 'Resolution', 300)

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Dave B 2021-10-14

在 MATLAB Online 中打开

How about:

t = tiledlayout(2, 1, 'Padding', 'tight');
t.Units = 'inches';
t.OuterPosition = [0.25 0.25 6 6];
nexttile;
x = linspace(0,10);
y1 = sin(x);
plot(x,y1)
nexttile;
y2 = sin(5*x);
plot(x,y2)
% if you want your figure to go back to where it was after export, you can
% store the current units and position and set them back after exporting
set(gcf,'Units','inches','Position',[1 1 8 8]) % I used width and height of 8 to be sure nothing got cut off
exportgraphics(t, 'test.jpg', 'Resolution', 300)