Iam a beginner who try to study Ferret. I just follow the instructions in the tutorial about "How to use Ferret and DODS to access and analyze remote data”. The link "http://www.cdc.noaa.gov/cgi-bin/opendap/nph-nc/Datasets/nodc.woa98/temperat/monthly/otemp.anal1deg.nc” which I try to use is in the web. why don’t you replace it with the new one as I am quite fresh so I don’t know which one is too old. I just base on the instructions on the web.
Many thanks for your help.