Help displaying a formatted matrix to the command window

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Hi all, this seems like a simple question, but sprintf(...) doesn't do the trick. Is there an EASY way to display a matrix in the command window with a specified number of digits of precision?
>> x = rand(3,2) - 0.5
x =
-0.3810 -0.1596
-0.0016 0.0853
0.4597 -0.2762
>> format long >> x
x =
-0.381002318441623 -0.159614273333867
-0.001635948017857 0.085267750979777
0.459743958516081 -0.276188060508863
How do I show x with, say, 6 digits of precision (as in below)??
-0.381002 -0.159614
-0.001635 0.085267
0.459743 -0.276188
I'm sure one could write a code that figured out the size of x and then used sprintf to create the desired output. Does this code exist?

Accepted Answer

Brenden Epps
Brenden Epps on 6 Jun 2012
I have created a function called DISPN that answers this question.

More Answers (2)

Oleg Komarov
Oleg Komarov on 5 Jun 2012
Please read more carefully the documentation of sprintf(), it DOES the trick:
sprintf('%.6f %.6f\n',rand(3,2))
Now, if you wanna make the number of columns adjust automatically, then:
A = randn(3,9);
sprintf([repmat('%10.6f',1,size(A,2)) '\n'],A)
Unfortunately, there's some learning curve in format customization.
Stephen23 on 10 Oct 2018
Edited: Stephen23 on 10 Oct 2018
@Anton: yes, all of the above examples should transpose the array, like this:
The fprintf help explains that it "...applies the formatSpec to all elements of arrays A1,... An in column order, and writes the data..." (emphasis added).

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Walter Roberson
Walter Roberson on 10 Oct 2018
num2str(x, 6)

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