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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
> Thank you Yuan again for your quick response. I appreciate your time and > efforts. > > I did the coversion using a tool from one of my colleagues. I do not > know much about that tool. I will check with him. Is there something you > can do with IDV to plot it correctly? > > Thanks, > > Junhua No, the IDV doesn't have this feature. Yuan > > -----Original Message----- > From: Unidata IDV Support [mailto:address@hidden] > Sent: September 17, 2010 4:20 PM > To: Zhang,Junhua [Ontario] > Cc: address@hidden > Subject: [IDV #LAG-627777]: Data are plotted to wrong locations > > > Hi, Yuan, > > > > Thank you very much for checking. The minor change of map position > > does not matter to me. However, the location of the data is wrong. I > > am ploting Canadian emissions, but they were plotted to US side. > > Attached is a plot I just did which shows clealy that the emissions > > are at US side. I checked the lat, lon in the netcdf file, they seem > > OK. Could you please check it again? > > > > Many Thanks, > > > > Junhua > > Hi Junhua, > > I see the problem this time, I am guess you are using some GIS > software packages to do the conversion. This software package has > difference setting of y coordinate, and it is the opposite to our netcdf > convention, that counting the 0 index at the lower left, and you need to > flip the data after the conversion. > > > Yuan > > > > > > > > > -----Original Message----- > > From: Unidata IDV Support [mailto:address@hidden] > > Sent: September 17, 2010 3:51 PM > > To: Zhang,Junhua [Ontario] > > Cc: address@hidden > > Subject: [IDV #LAG-627777]: Data are plotted to wrong locations > > > > > Dear IDV developer, > > > > > > I am using IDV 2.9u1 to plot some netcdf data. Originally the data > > > is in netcdf format. When I plotted it using IDV, the location of > > > the data is correct as seen in "Original_field.jpg". I then > > > converted it into other data format and did some data modification. > > > After that I converted it back to netcdf format. Unfortunately, IDV > > > plotted the new > > > > > netcdf data onto different locations. More specifically, it changed > > > the north-south direction as seen in "After_conversion.jpg". Please > > > noted that the data was modified. Therefore, the values are not the > > > same but the location should be the same. > > > > > > I also attached the "after conversion" netcdf file in this email. I > > > checked the data using "ncdump". It looks fine. Could you please > > > check > > > > > why IDV could not plot it correctly? > > > > > > Thank you in advance for your kindly help, > > > > > > Junhua > > > > > Hi Junhua, > > > > The minor change in the map position might be caused by the lose > > precision in your conversion process, I am not sure how you control > > the precision in the new file, if it is a jave program, change the > > variable type to double instead of float may help. > > > > > > Yuan > > > > Ticket Details > > =================== > > Ticket ID: LAG-627777 > > Department: Support IDV > > Priority: Normal > > Status: Closed > > > > > > > > > Ticket Details > =================== > Ticket ID: LAG-627777 > Department: Support IDV > Priority: Normal > Status: Closed > > Ticket Details =================== Ticket ID: LAG-627777 Department: Support IDV Priority: Normal Status: Closed