I am using this command to save my data files bit still this error is showing now.repeat/L=1:73 Let temp1=L;(repeat/K=1:40 Let temp2=K; save/append/file=test.nc UVEL[x=40E:110E,y=20S:30N,K=temp2,L=temp1]) **ERROR: command syntax: TEMP2LIST/FORMAT=CDF/append/file=test.nc UVEL[K=temp2,L=temp1]Command file, command group, or REPEAT execution abortedOn Wed, Aug 16, 2017 at 1:44 PM, Atul Srivastava <atul.ecc@xxxxxxxxx> wrote:Dear ferret users I have 361*292*75*73 data I want to save it after set my region let sayirc=uvel[x=40E:110E,y=20S:30N] I am trying to save it with the following commands but I am not able to save my data please tell me how I can save this data sets in a single nc fileave/l=1:20/FILE=at.nc uvelssave/l=21:40/FILE=at.nc/append uvelssave/l=21:50/FILE=at.nc/append uvelssave/l=51:73/FILE=at.nc/append uvelsI got this error**ERROR in external function: Segmentation Violation**ERROR: error in external functionplease tell me how I can save my data.