MATLAB: How to cut digits after the decimal point

decimal point

Hello, I have the following variable:
a1 = 0.1234
I want to cut all digits after the first one after the decimal point. Meaning:
a2 = 0.1
I've created the following code (q=1 in our example):
b1 = a1 .* 10^q;
b2 = floor(b1);
a2 = b2 ./ (10^q);
But, it output
a2 = 0.1000
How can I get rid of the zeros in the end?
Thank you.

Best Answer

You can use
a2 = round(a1,1);
to round to that decimal point.
However, to display the number with no zeros, you may want to change your display format.
format short
a2
a2 =
    0.1000
format short g
a2
a2 =
          0.1
See the difference between short, and short g.
I tend to leave the display format as short g always, except for the rare time when I want to see more digits, then I move to long g.
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