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[IDV #LAG-627777]: Data are plotted to wrong locations

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  • Subject: [IDV #LAG-627777]: Data are plotted to wrong locations
  • Date: Fri, 17 Sep 2010 13:51:12 -0600
> 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