Workspace calculation accuracy 7 characters

Question

Lev Mihailov 2019-8-2

0
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https://ww2.mathworks.cn/matlabcentral/answers/474556-workspace-calculation-accuracy-7-characters

回答： Rik 2019-8-2

Hello! Faced a problem, I need to copy the numbers 7 and more characters for later work in text formats

format long g
digitsOld = digits(20);
a = 20.224124124124;
b = 7664555.5789;
x1 = double(y)/b;
x2 = exp(double(x1));
x3 = 5*sin(x2)-pi/2;
x4 = 10*sin(x2)-pi/2;
Aanswer = x2*a;
Banswer = x4*a;
Canswer=x3*a-1.22;
disp(double(Aanswer))
for j = 1:length(Aanswer)
    va = ['Aanswer_',num2str(j)]; 
    eval([vn,'=Aanswer(j)']); 
    end

I have two problems, the first all my values are written in the workspace and there are a lot of them, can I group them all (create Aanswer 1x30000), the second problem in the workspace they are written only 6 characters (when using edit I can see all the other characters and I would like to save them for future work)

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Answer 1

Rik 2019-8-2

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https://ww2.mathworks.cn/matlabcentral/answers/474556-workspace-calculation-accuracy-7-characters#answer_385881

There is a big difference between the display of values and how they're stored. They aren't stored in a decimal form (maybe with the symbolic toolbox there is an exception), but in binary.

You don't need numbered variables or eval, but you need to learn about the sprintf and fprintf functions if you want to export values to another program.