<div dir="ltr">Hi, <div><br></div><div>I am having problems with the ttest function, the error is:</div><div>
<p>fatal:ttest: If s1 is not a scalar, then it must have the same number of dimensions as ave1, var1, ave2, and var2</p><p>I don't understand very much this error, I would like to ask you what I am missing here.</p><p>This is a piece of the code:</p></div> ua_ncep = u_ncep->uwnd(1:42,1,:,:) ;select 925 level<br> ;Averages<br> ave_ua_ncep=dim_avg(ua_ncep(lat|:,lon|:,time|:))<br> ;Variances<br> Var_ua_ncep = dim_variance (ua_ncep(lat|:,lon|:,time|:)) ; calculate variances<br> ;Defining sizes<br> sX = dimsizes (ave_ua_ncep) <br> ;Model<br> ua_model = uFiles[i]->ua(1:42,1,:,:) ;plevel 1=925 plevel 9=200 <br> ;Time averages<br> ave_ua_model=dim_avg(ua_model(lat|:,lon|:,time|:))<br> ;Variances<br> Var_ua_model = dim_variance (ua_model(lat|:,lon|:,time|:)) ; calculate var.<br> sY=dimsizes(ave_ua_model)<br> iflag=False<br> ;Significance levels: <div> prob = ttest(ave_ua_ncep,Var_ua_ncep^2,sX, ave_ua_model,Var_ua_model^2,sY, iflag, False) ;using STD <div><p>I also wanted to ask you, in this case, would it be necessary to use <font color="#000000"><span style="font-weight:bold;font-size:13px;font-family:verdana,sans-serif;line-height:16px"> </span><span style="font-size:13px;margin:0px;padding:0px;text-decoration:none;font-family:verdana,sans-serif;line-height:16px"><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/wgt_areaave.shtml" style="font-size:13px;margin:0px;padding:0px;text-decoration:none;font-family:verdana,sans-serif;line-height:16px">wgt_areaave</a>?</span></font> </p><p>Many thanks in advance,</p><p><br></p><p>Cheers,</p><p><br></p><p>Noelia</p><p><br></p><p><br></p></div></div></div>