I believe I found an answer to my own question. My input data to the
rect_to_curv function was in double precision (read in with type r8)
and the output coordinates were in single precision therefore the
output must have been confused with the type and returned inf, NAN and
**** values. All I did was output the data to a file and then read it
back in with single precision and the call to rect_to_curv worked.
----- Original Message -----
From: Stephen Guimond <sguimond@xxxxxxx>
Date: Monday, September 1, 2008 4:31 am
Subject: [ferret_users] Inf, NAN and **** output from rect_to_curv
function
To: oar.pmel.ferret_users@xxxxxxxx
> Hello,
>
> I am trying to grid a rectilinear grid onto a curvilinear grid but
> just get a bunch of inf, NAN and *** for my output. The grid of my
> input variable (called ntest):
>
> name axis # pts start end
> NX LONGITUDE 200mi 126.12W(233.89)
> 113.89W(246.11) NY LATITUDE 200 i 14.253N
> 25.746N
> ZAX Z (KM) 71 i 0.035583 15.116
>
> The grid of my destination curvilinear coordinates (same 2-D
> dimensions for lat and lon):
>
> name axis # pts start end
> X1 X 180 r 1 180
> Y1 Y 200 r 1 200
>
> The values of the 2-D lat and lon can be seen from the attached
> plot, which shows the general rectilinear grid and an overlay of
> the curvilinear grid. Here is my call to the function:
>
> let testing = rect_to_curv(ntest[d=1], clon, clat, 2)
>
> Again, this gives me inf, NAN and *** for output. Not sure if the
> destination coords need to be defined on a lat/lon axis or if they
> can be just a listing of lat/lon in degrees as I have it here.
> This wasn't clear from the documentation.
>
> Thanks,
> Steve
> =======================================================
> Stephen R. Guimond
> Graduate Research Assistant
> Florida State University
> Center for Ocean-Atmospheric Prediction Studies (COAPS)
> =======================================================
>
>
>
>
=======================================================
Stephen R. Guimond
Graduate Research Assistant
Florida State University
Center for Ocean-Atmospheric Prediction Studies (COAPS)
=======================================================