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Alain, I did not receive an attached image of your problem. Please provide the image as well as the plot parameters you are using to produce the image. Steve Chiswell Unidata User Support > To whom it may concern, > > I have been experimenting some issues while generating maps and I was > wondering if you could help me find the problem. > > I started by doing grid files of added layer averages of moisture > transport using the 'ltrn' function of the mixing ratio and wind.(see > attached text file with further explanations) > > Afterward, I generated maps of moisture transport vectors using the > grid files calculated. So far, nothing wrong. Although, when I > generated maps of the magnitude of those moisture transport vectors, > grid points were missing. (see attached image)I wasn't able to find out > why the vectors are fine whereas the isotachs are not. > > Since this missing data could really influence my results, I am trying > to find the cause of it. > > Best regards, > > Alain Roberge > Master student at McGill University > Department of Atmospheric and Oceanic Sciences > Montreal, Canada > > Ticket Details =================== Ticket ID: RAG-550714 Department: Support GEMPAK Priority: Normal Status: On Hold