[ncl-talk] Proj4 function

[Rick Brownrigg]

Hi,

A couple of comments:

i) A simple "Killed" message is the Linux kernels way of saying it
catastrophically ran out of memory. On my machine, I'm getting the
marginally more descriptive "fatal:NclMalloc Failed:[errno=12]" message. In
any case there 59709 lines in that first January file, and you are trying
to create a 59709x59709 array of floats, and that's about 14GB which is
more than my 16GB machine can accommodate.

ii) Are these irregularly spaced observational data?  Why the nlon x nlat
square array?

iii) I'm confused about the use of proj4/translate_coordinate?  You're data
are already in decimal degrees -- why project the values into an
equidistant projection?

iv) I don't understand this question:  "... it is possible to make this
projection (spatialization of these data) in the same resolution as another
data in netcdf (spatial reference) and using a shapefile for a more
specific region?"

Rick


On Tue, Jan 21, 2020 at 11:49 AM Vanúcia Schumacher via ncl-talk <
ncl-talk at ucar.edu> wrote:

> Hi all,
>
> I'm trying to use the proj4 function to spatialize some ascii data.
> The data refer to a variable for each lat and lon points
> However, I am not able to create the NetCDF of some files (for example,
> January files - Killed message), I believe that the number of lat and lon
> are very large
> And the proj4 function returns the lat and lon values in meters, I needed
> in decimal degrees. How could I convert?
> Another question, I was wondering if it is possible to make this
> projection (spatialization of these data) in the same resolution as another
> data in netcdf (spatial reference) and using a shapefile for a more
> specific region?
> transform_coordinate(srcProj, dstProj, lons, lats, elevs) because on here
> lons and lats refers to ascii data
>
> I attached the data and my script for a better view of what I'm trying to
> do.
>
> Thanks for the support
>
>
>
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