Extracting numerical data from a char vector

I'm trying to extract numerical data from a character vector using regexp. The character vector data that I'm interested in is

Latitude: XXX.XXXX

Longitude: XXX.XXXX

Heading: XXX.XXXX

where X represents a digit. Each of the numerical data entries can be 2 or 3 digits to the left of the decimal place and 3 or 4 digits to the right of the decimal place. Although the character vector is a row vector, I believe that the latitude, longitude, and heading entries are separated by line breaks.

How can I extract the latitude, longitude, and heading data and place them into their own individual latitude, longitude, and heading vectors of doubles?

[Stephen23]

@David Zhao: please upload a sample file by clicking the paperclip button.

Answer 1

[Voss]

% making up a character vector as described:
lat = 40.23;
lon = -32.674;
heading = 66.96;
str = sprintf('%8.4f\n%8.4f\n%8.4f',lat,lon,heading)

str = 
    ' 40.2300
     -32.6740
      66.9600'

% getting the values back out using regexp:
vals = regexp(str,'([-\.\d]+)','tokens');
vals = str2double([vals{:}])

vals = 1×3

40.2300 -32.6740 66.9600

recovered_lat = vals(1:3:end);
recovered_lon = vals(2:3:end);
recovered_heading = vals(3:3:end);