Printing equations stored in a cell to plot titles?

Question

Braden Kerr 2020-11-26

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/663048-printing-equations-stored-in-a-cell-to-plot-titles

评论： Ameer Hamza 2020-11-26

Hello,

Currently i have multiple equations stored a cell array and would like to print them as the titles to various plots. Since I am calling the cells in a loop I would like to do soemthing like this but I dont think sprintf is the correct way to apprach it.

q_array = {@(x)ones(size(x)); @(x) abs(x); @(x) x.^2; @(x) (1/3)+(2/3)*x.^2};
for k =1:4
    %Code that generates the plot for each loop 
    formatspec = 'Exact vs Scheme Plots for q({\nu}) = %s';
    sgtitle(sprintf(formatspec, q_array{k}));
end

Thank you

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Answer 1

Ameer Hamza 2020-11-26

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/663048-printing-equations-stored-in-a-cell-to-plot-titles#answer_556508

编辑：Ameer Hamza 2020-11-26

在 MATLAB Online 中打开

Although you can use func2str() to convert the function handle to char array

sgtitle(sprintf(formatspec, func2str(q_array{k})));

but a more flexible solution is to create a seperate array for titles

q_array = {@(x)ones(size(x)); @(x) abs(x); @(x) x.^2; @(x) (1/3)+(2/3)*x.^2};
q_titles = {'ones(size(x))'; 'abs(x)'; 'x^2'; '(1/3)+(2/3)*x^2'};
for k =1:4
    %Code that generates the plot for each loop 
    figure;
    formatspec = 'Exact vs Scheme Plots for q({\\nu}) = %s';
    sgtitle(sprintf(formatspec, q_titles{k}));
end