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[IDV #CXN-692391]: How to get latitude and longitude grid of my image

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  • Subject: [IDV #CXN-692391]: How to get latitude and longitude grid of my image
  • Date: Tue, 26 Apr 2022 10:49:08 -0600
> Hi,
> 
> I'm using IDV to visualize data that I get from the site:
> https://ghrc.nsstc.nasa.gov/opendap/globalir/data/2022/0214/contents.html
> 
> This data is in the mcidas are format. I visualize and save it, attached is
> my figure and I export this data
> to a netcdf format.
> 
> In this netcdf file I had:
> 
> mcidas_area:AreaDirectory = 0., 4., 11., 122046., 180000., 7162., 5051.,
> 0., 5400., 9900., 1., 1., 1., 1., 0., 0., 122046., 181758., 8., 0., 0., 0.,
> 0., 0., 538976288., 538976288., 538976288., 538976288., 538976288.,
> 538976288., 538976288., 538976288., 9076., 768., 256., 0., 0., 0., 0., 0.,
> 0., 0., 0., 0., 0., 122046., 0., 0., 0., 0., 0., 1447646034., 1112688980.,
> 0., 0., 0., 1447646034., 538976288., 1., 0., 0., 0., 0., 2.
> 
> and the
> 
> mcidas_area:NavBlock = 1296388675., 10000., 10000., 0., 4000., 1100000.,
> 6378137., 81819., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
> 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
> 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
> 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
> 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
> 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
> 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.
> 
> I don't have experience with the mcidas area format. I woul like know how
> the IDV use these information mcidas_area:AreaDirectory and
> mcidas_area:NavBlock to plot the grid. How words in the AreaDirectory and
> NavBlock are used to plot the grid.
> 
This is where the projection and coordinate system stored. The IDV uses the 
netcdf java
library and this information to build the coordinate system.

> It is possible to save also a grid of latitude and longitude for each point
> in this image.
> 
No, it is impossible without a new function development.

Yuan
> I would be very grateful if someone could help me.
> 
> Thanks,
> 
> Conrado
> 
> 


Ticket Details
===================
Ticket ID: CXN-692391
Department: Support IDV
Priority: Normal
Status: Closed
===================
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