[gradsusr] Grads earth's radius

[Wesley Ebisuzaki]

The easiest way is to modify the PDEF statement.  You should be able to
modify the dx and dy values to use a non-NCEP radius
with the NCEP routines.

        Wesley

On Tue, Dec 13, 2011 at 9:38 AM, Jennifer Adams <jma at cola.iges.org> wrote:

> The values (there are more than one) of the Earth radius are hard-coded
> into GrADS in the PDEF routines that were provided by NCEP to deal with
> their pre-projected data. Changing them would break the display of just
> about every regional product that comes out of NCEP. If you require a
> different value, then what is needed is a new PDEF keyword and a new
> routine to deal with it in gaddes.c. You can take a look at the source code
> and submit a patch if you want, but it might be simpler to do the
> calculations yourself and create your own PDEF file. Or, you could change
> the values in your own copy of the GrADS source and then create a local
> build with the values that suit the data you want to display.
> --Jennifer
>
>
> On Dec 12, 2011, at 3:06 PM, Jofre Janué wrote:
>
>
> I have some problems with the borders of countries and the representation
> of the WRF model, because don't match( you can see it with 3km resolution)
> . I think theWRF works with a earth's radius of 6370 km and Grads is
> 6371.2 km.
> Is it possible to change the Grads radius of the earth to match borders
> with WRF?
>
>
>
>
>
>
>
>
>
>
> > From: gradsusr-request at gradsusr.org
> > Subject: gradsusr Digest, Vol 22, Issue 11
> > To: gradsusr at gradsusr.org
> > Date: Sun, 11 Dec 2011 18:14:57 -0500
> >
> > Send gradsusr mailing list submissions to
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> > or, via email, send a message with subject or body 'help' to
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> >
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> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of gradsusr digest..."
> >
> >
> > Today's Topics:
> >
> > 1. Re: OpenGrads Installation (Arlindo da Silva)
> > 2. Re: OpenGrads Installation (Andrew Revering)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Sun, 11 Dec 2011 13:47:27 -0800
> > From: Arlindo da Silva <dasilva at alum.mit.edu>
> > Subject: Re: [gradsusr] OpenGrads Installation
> > To: GrADS Users Forum <gradsusr at gradsusr.org>
> > Message-ID:
> > <CALz7xZd3=aUQw0-jEYOZJ5BnBAAGL+H+56ebCwUPS49ve=uMXA at mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > On Sun, Dec 11, 2011 at 12:44 PM, Andrew Revering <andy at f5data.com>
> wrote:
> >
> > > Arlindo,
> > >
> > > I'm sending this to you privately
> > >
> >
> > Not so, you replied to the whole list...
> >
> >
> >
> > > because I dont want to accidentally send some server-sensitive
> information
> > > to the entire list accidentally...
> > >
> > >>
> > >> Simply type "env" at the command line and you will get a list of all
> > >> environment variables defined.
> > >>
> > >
> > > root at server [~]# env
> > > HOSTNAME=*********************
> > > /env
> > >
> > ...
> >
> > Good, no grads related environment variable is being set, so we can rule
> > out any conflict there.
> >
> >
> > >
> > >> Make sure you move the Contents/ directory as a whole, keeping
> directory
> > >> tree intact.
> > >>
> > >
> > > So for example, should it be:
> > > /opt/opengrads/Linux.... etc.
> > > or
> > > /opt/opengrads/Contents/Linux.... etc.
> > >
> > > I currently have it as the first scenario.
> > >
> > >
> >
> > Either is fine, provided the whole Contets/ directory (and all
> > sub-directories are moved over). In your case, make sure /opt/opengrads
> is
> > ahead in your path (and not another directory further down under Linux/).
> >
> >
> >
> > >
> > > I don't think I'm able to do this because the server is a web server
> and
> > > I'm connecting through SSH.
> > >
> >
> > Sometimes you need the -X option to enable X windows through ssh, for
> > example
> >
> > % ssh -X myserver.domain.com
> >
> >
> >
> > > So when I run opengrads I get "error in GXSTRT: unable to connect to X
> > > server"
> > >
> > > So I have to run everything with -lbc 'run ' scripts. Is there a way
> to do
> > > q udx and send that output to a text file?
> > >
> > >
> > You can run grads interatively without having X Windows connecivity. Just
> > start opengrads in batch mode (-b option) :
> >
> > % opengrads -bl
> >
> > What I am looking for is whether you see a line like this:
> >
> > *Loading User Defined Extensions table
> > </Applications/OpenGrADS/Darwin/Versions/2.0.0.oga.1/i386/gex/udxt> ...
> ok.*
> >
> > and whether
> >
> > ga-> q udx
> >
> > gives you a full list of extensions.
> >
> > Arlindo
> >
> >
> > --
> > Arlindo da Silva
> > dasilva at alum.mit.edu
> > -------------- next part --------------
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>
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Sun, 11 Dec 2011 17:07:41 -0600
> > From: Andrew Revering <andy at f5data.com>
> > Subject: Re: [gradsusr] OpenGrads Installation
> > To: GrADS Users Forum <gradsusr at gradsusr.org>
> > Message-ID:
> > <CAHXC6uvYwyniLHKc7efqOSxA2+k1pzgn60KucTSLixAcoiDnHw at mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > >
> > > Not so, you replied to the whole list...
> > >>
> > >
> > Yah... I'm a damn fool.
> >
> >
> > > ga-> q udx
> > >
> > > gives you a full list of extensions.
> > >
> >
> > ga-> q udx
> >
> > Command Environment Variables Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > printenv Expand environment variables c_xenv@^env.gex
> > runenv Expand env vars and run command c_env@^env.gex
> > @ Expand env vars and run command c_env@^env.gex
> > getenv Get value of environment variable c_getenv@^env.gex
> > setenv Set value of environment variable c_setenv@^env.gex
> >
> > Command GxYAT: Image Generation Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > gxyat Save images in PNG/SVG/PDF/PS c_gxyat@^gxyat.gex
> > set_rgba Set color red/green/blue/alpha c_rgba@^gxyat.gex
> >
> > Command Simple Extension Example Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > hello Hello, World! sample command c_hello@^libhello.gex
> >
> > Command Interprocess Communication Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > ipc_verb IPC verbose toggle c_Verb@^libipc.gex
> > ipc_open Open stream for save/load c_Open@^libipc.gex
> > ipc_close Close stream c_Close@^libipc.gex
> > ipc_save Save expression to stream c_Save@^libipc.gex
> > ipc_define Define variable (obsolete) c_Define@^libipc.gex
> > ipc_error Print IPC error message c_Error@^libipc.gex
> >
> > Command LATS: File Reformatting and Subsetting Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > set_lats Set LATS parameters c_lats_set@
> > ^liblats.gex
> > query_lats Query LATS parameters c_lats_query@
> > ^liblats.gex
> > lats_grid Define LATS grid c_lats_grid@
> > ^liblats.gex
> > lats_data Write data to LATS file c_lats_data@
> > ^liblats.gex
> > reinit_lats Re-init LATS parameters c_lats_reinit@
> > ^liblats.gex
> >
> > Command Mike Fiorino's Extensions Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > mfhilo Find max/min or H/L in 2D field c_mfhilo@^libmf.gex
> > tcprop Properties radinf from central lon/lat c_tcprop@^libmf.gex
> > tcxy2rt cartesian -> cylindrical coords results only scriptvar RESULT
> > c_tcxy2rt@^libmf.gex
> > grhist histogram of expr c_grhist@^libmf.gex
> >
> > Command Satellite Orbit Extensions Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > set_orb Set ORB parameters c_set@^orb.gex
> > orb_track Satellite ground tracks c_track@^orb.gex
> >
> > Command Shapefile Extensions Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > shp_lines Draw lines from shapefile c_lines@^shape.gex
> > shp_polyf Draw polygons from shapefile c_polyf@^shape.gex
> >
> > Function Ben-Jei Tsuang's Extensions Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > lt Local time f_bjt@^libbjt.gex
> > jd Julian day f_bjt@^libbjt.gex
> > cosz Cosine solar zenith angle f_bjt@^libbjt.gex
> > dayratio Daylight ratio f_bjt@^libbjt.gex
> > if Conditional function f_bjt@^libbjt.gex
> > maxv Maximum value f_bjt@^libbjt.gex
> > minv Minimum value f_bjt@^libbjt.gex
> > which Label gridpoints f_bjt@^libbjt.gex
> > ftest F-test f_bjt@^libbjt.gex
> > ttest T-test f_bjt@^libbjt.gex
> > tfit Point linear regression f_bjt@^libbjt.gex
> > fit Global linear regression f_bjt@^libbjt.gex
> > tcorr2 Time correlation f_bjt@^libbjt.gex
> > tregr2 Point linear regression f_bjt@^libbjt.gex
> > tmave2 Time averaging w/masking f_bjt@^libbjt.gex
> > madvu Calculates -d(u*EXPR)/dx f_bjt@^libbjt.gex
> > madvv Calculates -d(V*EXPR)/dy f_bjt@^libbjt.gex
> > madvw Calculates -d(W*EXPR)/dp f_bjt@^libbjt.gex
> > muadv Zonal advection f_bjt@^libbjt.gex
> > mvadv Meridional advection f_bjt@^libbjt.gex
> > mwadv Vertical advection f_bjt@^libbjt.gex
> > satvap Saturated vapor pressure f_bjt@^libbjt.gex
> > dew Dew point temperature f_bjt@^libbjt.gex
> > lw Thermal infrared fluxes f_bjt@^libbjt.gex
> > lw2 Thermal infrared fluxes v2 f_bjt@^libbjt.gex
> > pinterp Pressure interpolation f_bjt@^libbjt.gex
> > zinterp Height interpolation f_bjt@^libbjt.gex
> > line Draws a line f_bjt@^libbjt.gex
> > vint2 Mass-weighted vertical integral f_bjt@^libbjt.gex
> >
> > Function Streamfunction & Velocity Potential Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > fish Poisson solver f_fish@^fish.gex
> > fish_psi Compute streamfunction f_psichi@^fish.gex
> > fish_chi Compute velocity potential f_psichi@^fish.gex
> > fish_vor Compute vorticity f_psichi@^fish.gex
> > fish_div Compute divergence f_psichi@^fish.gex
> >
> > Function Saakeskus Wx Function Collection Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > dewpt Dew-point temperature f_gsudf@^gsudf.gex
> > ept Equivalent potential temperature f_gsudf@^gsudf.gex
> > epi Potential Instability f_gsudf@^gsudf.gex
> > plcl Pressure at LCL f_gsudf@^gsudf.gex
> > shear Wind Shear f_gsudf@^gsudf.gex
> > srh1km Storm-relative Helicity 0-1km' f_gsudf@^gsudf.gex
> > srh3km Storm-relative Helicity 0-3km' f_gsudf@^gsudf.gex
> > tlcl Temperature at LCL f_gsudf@^gsudf.gex
> > tsindex Chance of T-storm Initiation f_gsudf@^gsudf.gex
> > ttindex Total Totals Index f_gsudf@^gsudf.gex
> > wchill Wind Chill Index (New) f_gsudf@^gsudf.gex
> >
> > Function Simple Extension Example Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > hello Hello, World! sample function f_hello@^libhello.gex
> >
> > Function Interprocess Communication Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > ipc_save Save expression to stream f_Save@^libipc.gex
> > ipc_load Load variable from file f_Load@^libipc.gex
> >
> > Function Mike Fiorino's Extensions Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > smth2d Shuman smoother/de-smoother f_smth2d@^libmf.gex
> > xy2rt cartesian -> cylindrical coord f_xy2rt@^libmf.gex
> > uv2trw Find radial/tangential velocity f_uv2trw@^libmf.gex
> > re2 General interpolator (regrid2) f_re2@^libmf.gex
> > esmrf Saturation vapor pressure (old MRF) f_esmrf@^libmf.gex
> > linreg Linear regression: mx + b f_linreg@^libmf.gex
> >
> > Function Satellite Orbit Extensions Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > orb_mask Satellite orbit masking f_mask@^orb.gex
> >
> > Function Regridding Functions Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > re General interpolator ffre@^re.gex
> > re_ General interpolator (verbose) ffre_dbg@^re.gex
> > regrid2 regrid2-like wrapper for re() f_gsudf@^gsudf.gex
> > geos Interpolation to GEOS-5 Grids f_gsudf@^gsudf.gex
> > reimg Interpolation for Image Generation' f_gsudf@^gsudf.gex
> >
> > Function Spherical Harmonic Analysis Function at Library
> > ----------- ---------------------------------------
> > --------------------------
> > sh_filt Spherical harmonic filter f_shfilt@^shfilt.gex
> > sh_power Spherical harmonic spectra f_shpowr@^shfilt.gex
> >
> > ga->
> > -------------- next part --------------
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> >
> > ------------------------------
> >
> > _______________________________________________
> > gradsusr mailing list
> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> >
> >
> > End of gradsusr Digest, Vol 22, Issue 11
> > ****************************************
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
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