Error field assignment to a non structured array

When running this script I get the error, "Field Assignment to a non-structured array" on line 32, "w.dir = m {6} ; ". I am new to matlab, but I've used this same code before to open a different file with different variable names. I think the issue may be in my textscan command? Any thoughts from the pros?

function w = read_met_station(met_file)

met_file = '\\file\weather_data.txt' ;
fid = fopen(met_file) ; 

if fid == -1 
    error('Error. \nFile can not be opened.  Check path.') ;
    return
end

w = textscan(fid,'%5s %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f %*1c %f','HeaderLines',1) ; 

station_num   = w{1} ;
year          = w{2} ;
month         = w{3} ;
day           = w{4} ;
hour          = w{5} ;
w.dir         = w{6} ;
w.speed       = w{7} ;
w.gustdir     = w{8} ;
w.gustspd     = w{9} ;
w.windrun     = w{10} ;
w.rain        = w{11} ;
w.tdry        = w{12} ;
w.twet        = w{13} ;
w.rh          = w{14} ;
w.tmax        = w{15} ;
w.tmin        = w{16} ;
w.tgmin       = w{17} ;
w.et10        = w{18} ;
w.rad         = w{19} ;

w.dn = datenum(year,month,day,hour,zeros(size(hour))) ;

[Image Analyst]

What does this say:

>> whos w

Also read this link and fix your formatting, and attach your text file so people can try some code on it.

[geog170]

Thanks, I didn't realize that there was a formatting tool. I've attached a sample of the data as well. W is an arbitrary letter I used because it's a weather file.

[KSSV]

YOur w is a class of cell..you are treating it as structure, which is not correct.

[geog170]

I ended up being able to fix it by changing all my "w." to "t." and updating the datenum to be (year,month,day). I'm not sure why it is having an issue with the hours.

Answer 1

[KSSV]

T = readtable(met_file) ;

or

T = fileread(met_file) ;