Need help with this error using fscanf

I am creating a loop to read a rather large multi column txt file and change the 2 digit date to 4 digit and my scan function is returning an error in line 6 the first line fscanf is used I am sure its in my syntax used there. Any help is much appreciated!!!

fid=fopen('test.txt', 'r')
 
while ~feof(fid)
    
    tline=fgetl(fid);
    Year=fscanf(fid,'%g',[1 1:2:inf]);
    Month=fscanf(fid,'%g',[1 2:2:inf]);
    Lowtemp=fscanf(fid,'%g',[1 2:2:inf]);
    Hightemp=fscanf(fid,'%g',[1 2:2:inf]);
    Precip=fscanf(fid,'%g',[1 2:2:inf]);
  
    Year=Year + 1900
end
 
fileID = fopen('newtxt.txt','w');
fprintf(fileID, 'Year Month LowTemp HighTemp Precip\n');
fprintf(fileID,'%g %g %g %g %g\n',Year,Month,Lowtemp,Hightemp,Precip);
fclose(fileID);

_____________

>> temphw

fid =

     9

Maximum variable size allowed by the program is exceeded.

Error in temphw (line 6)
    Year=scanf(fid,'%g',[1 1:2:inf]);

[Timothy Monroe]

And my .txt file looks like this.

Yr Mnth LowTemp(deg F) HighTemp(deg F) Precip(in)

89 Jan 52.4 70.1 2.27

89 Feb 53.8 71.6 2.67

89 Mar 58.5 76.3 2.84

89 Apr 62.4 80.6 1.80

89 May 68.9 86.3 2.85

Answer 1

[Walter Roberson]

The size parameter for fscanf can be a scalar, or it can be a vector of values representing an array dimensions. It cannot be used to tell MATLAB to only write to every second output column, and it cannot be used to tell MATLAB to skip scanning input columns. It also cannot be used to tell MATLAB to go back and re-read a different part of the same line.

If you had reason to only read in every second value, then you can use

fscanf(fid, '%g %*s', [1 inf])    %reads odd-numbered columns, discards even-numbered
fscanf(fid, '%*s %g', [1 inf])    %reads even-numbered columns, discards odd-numbered

If you need odd and even in separate variables, then

xy = fscanf(fid, '%g %g', [2 inf]);
x = xy(1,:);
y = xy(2,:);

[Timothy Monroe]

I ahve 4 columns of data how would I use that methods on more than 2 and keep them separate?

[Walter Roberson]

89 Jan  52.4    70.1   2.27

fid=fopen('test.txt', 'r')
oc = textscan(fid, '%f%s%g%g%g');
fclose(fid);
Year = oc{1};
Month = oc{2};
Lowtemp = oc{3};
Hightemp = oc{4};
Precip = oc{5};