GNU Octave：使用textscan（）函数读取由点（。）分隔的整数序列

Question

I am trying to read data from a file with dates in DAY.MONTH.YEAR format using the textscan(...) function. Below is a simple illustration of the problem.

This does not work as desired:

    u = textscan ('5.2.1975','%d.%d.%d')
    u = 
    {
      [1,1] = 5
      [1,2] = 1975
      [1,3] = 0
    }

It seems textscan treats the 5.2 part as a decimal number and rounds it to 5. It returns the last number (1975) as the second element of u.

The conversion works as expected if the separator is not a dot:

    u = textscan ('5*2*1975','%d*%d*%d')
    u = 
    {
      [1,1] = 5
      [1,2] = 2
      [1,3] = 1975
    }

What do I need to change to make it work with the dot?

Answer 1

Here is what I observe in Octave 4.0.3:

>>  u = textscan ('5.2.1975','%d.%d.%d')
u =
{
  [1,1] = 5
  [1,2] = 2
  [1,3] = 1975
}

So it seems that textscan does exactly what you expect, in principle.

If you are seeing a different result:

• in an older Octave release, you should upgrade your version of Octave and check again;
• in a recent release, you should report this as a bug on the Octave bug tracker .