Read-Only in Excel

When I execute the code below it prints out in Excel ok but it is in "Read-Only". How do I stop "Read-Only"?

exl = actxserver('excel.application');
exlWkbk = exl.Workbooks;
exlFile = exlWkbk.Open(['C:/MATLAB7/work/file.xls']);
exlSheet1 = exlFile.Sheets.Item('Sheet1');
mm=2
for t = 0:500:10000
    mm=mm+1
    vx1=6*t-800
    vy1=3*t-300
    vz1=2*t-100
    vr1=(vx1^2+vy1^2+vz1^2)^.5
        exlSheet1.Range(['B' num2str(mm)]).value = vx1;
        exlSheet1.Range(['C' num2str(mm)]).value = vy1;
        exlSheet1.Range(['D' num2str(mm)]).value = vz1;
        exlSheet1.Range(['E' num2str(mm)]).value = vr1;
end
        exl.visible = true;
exlWkbk.Close;
exl.Quit;

Answer 1

[Titus Edelhofer]

Hi, I'm not sure what your question is. But in any case you will need to call

exlWkbk.Save

before you close it, since you modified it before. Second, if you get an error of "Read only", the natural question is: is your file read only (i.e., write protected)?

Titus