How to convert sequence of numbers into text and display on screen

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Cai Chin 2020-8-22

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https://ww2.mathworks.cn/matlabcentral/answers/583058-how-to-convert-sequence-of-numbers-into-text-and-display-on-screen

评论： Cai Chin 2020-8-22

I am using MATLAB R2020a Psychtoolbox on Mac OS. I am trying to display sequences of numbers generated from a random Gaussian distribution and have tried 'num2str' and 'char' functions but these haven't worked. These are the sequences. The 'dis' function generates the numbers.

% Define sequences
seq1 = dis(20, 10, 100, 0, 5); 
    seq2 = dis(10, 10, 100, 0, 5); 
    seq3 = dis(10, 10, 100, 0, 5); 
% dis function
function x = dis(va, mu, ul, ll, nvals)
n = makedist('normal','mu',mu,'sigma',sqrt(va));
t = truncate(n,ll,ul);
x = round(random(t,nvals,1));
end

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Adam Danz 2020-8-22

编辑：Adam Danz 2020-8-22

在 MATLAB Online 中打开

To add space between the numbers,

sprintf('%.4f ', rand(1,5))

Another approach, although much less efficient,

str = num2str(rand(1,5)); 
strSpace = regexprep(str, ' +', '          ')

Cai Chin 2020-8-22

Thanks, that worked perfectly. In Psychtoolbox, when you enter the script name into the command window, the screen becomes blank and the background changes to a specified colour. I was then displaying sequences of numbers in a virtual triangle, each number separated by a space.

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