[gradsusr] 'q w2gr 120 30'

[James T. Potemra]

I think this is ok; the 'q w2gr' command is looking for lon=120, lat=30
which
probably doesn't exist exactly in your grid (note that the delta-lat and
delta-lon
are 0.043945). Instead, the index return is the closest point. So,
technically
you can 'set x 6827.72' and 'set y 2731.69', but I think you'll get the
same
result as 'set x 6828' and 'set y 2732'. Probably worth checking though (I'm
not sure if it rounds up or down).

Jim

Namba Takaya wrote:
> Jim
>
> Thank you very much for your advice.
> I made it.
>
> However, I feel strange that
> X, Y are integer? Is it OK?
>
> 'q w2gr 120 30'
> result is
> Xdim = 6827.72 Ydim = 2731.69
>
> 'q file'
> result is also.
> Default file number is: 1
> X is varying Lon = 120 to 170 X = 6827.72 to 7965.5
> Y is varying Lat = 10 to 50 Y = 2276.57 to 3186.8
>
> B
> Takaya Namba
>
> > Date: Mon, 20 Jun 2011 ! 08:44:44 -1000
> > From: jimp at hawaii.edu
> > To: gradsusr at gradsusr.org
> > Subject: Re: [gradsusr] 'q w2gr 120 30'
> >
> > Hi Takaya:
> >
> > You first need to display something, then the 'q w2gr' should work.
> > For example, add a line 'd sst' (or whatever) before the 'q w2gr'.
> >
> > Jim
> >
> > Namba Takaya wrote:
> > > Dear Sir
> > >
> > > When I do
> > > 'q w2gr 120 30'
> > > the error comes like
> > > coordinate No scaling environment
> > >
> > > Could you give me how to solve the problem?
> > >
> > > Best Regards, Takaya Namba
> > >
> > >
> > > My grads script is
> > >
> > > 'set gxout shaded'
> > > 'xdfopen bsst.ctl'
> > > say test2
> > > 'q file'
> > > say result
> > > !
> > > 'q w2gr 120 30'
> > > say result
> > >
> > > data descriptor file
> &g! t; >
> > > DSET
> > > http://data.nodc.noaa.gov/opend
> ap/pathfinder/Version5.0/Monthly/1985/198501.s04m1pfv50-bsst-16b.hdf
> > > options yrev
> > > TITLE This is a sample
> > > UNDEF 99999.0
> > > YDEF lat 4096 LINEAR -90 0.043945
> > > XDEF lon 8192 LINEAR -180 0.043945
> > > VARS 1:
> > > bsst=>bsst 1 99 surface temperature
> > > ENDVARS
> > >
> > >
> > > My grads script is
> > >
> > > 'set gxout shaded'
> > > 'xdfopen bsst.ctl'
> > > say test2
> > > 'q file'
> > > say result
> > > 'q w2gr 120 30'
> > > say result
> > >
> > > netcdf 198501.s04m1pfv50-bsst-16b { // format variant: 64bit
> > > dimensions:
> > > ! lat = 4096 ;
> > > lon = 8 192 ;
> > > variables:
> > > short bsst(lat, lon) ;
> > > bsst:dsp_PixelType = 1b ;
> > > bsst:dsp_PixelSize = 2b ;
> > > bsst:dsp_Flag = 0s ;
> > > bsst:dsp_nBits = 16s ;
> > &g! t; bsst:dsp_LineSize = 0 ;
> > > bsst:dsp_cal_name = "Temperature" ;
> > > bsst:units = "Temp" ;
> > > bsst:dsp_cal_eqnNumber = 2s ;
> > > bsst:dsp_cal_CoeffsLength = 8s ;
> > > ! bsst:dsp_cal_coeffs = 0.075f, -3.f ;
> > > bsst:scale_factor = 0.075f ;
> > > bsst:add_off = -3.f ;
> > >
> > >
> > >
> > >
> > >
> > >
> > >
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