[gradsusr] Data Request Error: Invalid grid coordinates

[Jeffrey Duda]

Make sure the lat/lon range in your control file matches what you are
setting in grads.  There are some data sources that use only positive values
for either lat and/or lon, so you might have to set your longitude as 0 to
360 to see across the prime meridian (or 260 to 25 if Grads allows that).
When you enter 'q dims' you should get a sense for whether your dimension
environment is set correctly or not.  Lat/lon won't tell you much, but if
the ranges for X and Y are huge or have negative values then you'll know you
set the environment wrong somehow.

Jeff

On Fri, Jan 14, 2011 at 4:04 PM, Yi-Chih Huang <dscpln at gmail.com> wrote:

> Jeff,
>
>     Originally longitude is -100~99 and latitude is -50~49.  I only plot
> -100~25 in longitude and -25~25 latitude as following output.
>
>     Thanks,
>
>                Yi-Chih
>
> ----------------------
> Running in Batch mode
> ga-> Scanning description file:  ./wind/windctl/wind100.ctl
> Data file ./data_slice/fort.0100 is open as file 1
> LON set to -100 99
> LAT set to -50 49
> LEV set to 0 0
> Time values set: 1997:4:30:8 1997:4:30:8
> E set to 1 1
> ga-> Scanning description file:  ./vort/vortctl/vort100.ctl
> Data file ./data_pvbgt/fort.0100 is open as file 2
> ga-> ga-> ga-> ga-> ga-> grid is off
> ga-> LON set to -100 25
> ga-> LAT set to -25 25
> ga-> xlint = 25
> ga-> ylint = 25
> ga-> SET XLOPTS values:  Color = 1  Thickness = 4  Size = 0.12
> ga-> SET YLOPTS values:  Color = 1  Thickness = 4   Size = 0.12
> ga-> SET STRSIZ values:  hsize = 0.15  vsize = 0.15
> ga-> ga-> ga-> ga-> ccolor = rainbow
> ga-> Number of clevs = 11
>
> ga-> Data Request Error: Invalid grid coordinates
>   World coordinates convert to non-integer  grid coordinates
>     Variable = vor.2  Dimension = 2
>   Error ocurred at column 1
> DISPLAY error:  Invalid expression
>   Expression = vor.2*1e5
>
>
> On Fri, Jan 14, 2011 at 4:59 PM, Jeffrey Duda <jdduda at iastate.edu> wrote:
>
>> Yi-Chih,
>> What's your dimension environment when you try to display the variable?
>>
>> Jeff Duda
>>
>> On Fri, Jan 14, 2011 at 3:56 PM, Yi-Chih Huang <dscpln at gmail.com> wrote:
>>
>>> Hello,
>>>
>>>     I got the following error message about reading data in GrADS.
>>> Sometimes those data could be read; but sometime couldn't.  I tried to
>>> search by google online; but I didn't get further message.  Do you know
>>> anything about the error messge?
>>>
>>>     Thanks much,
>>>
>>>             Yi-Chih
>>>
>>> ---------------
>>> ga-> Data Request Error: Invalid grid coordinates
>>>   World coordinates convert to non-integer  grid coordinates
>>>     Variable = vor.2  Dimension = 2
>>>   Error ocurred at column 1
>>> DISPLAY error:  Invalid expression
>>>   Expression = vor.2*1e5
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
>>
>> --
>> Jeff Duda
>> Iowa State University
>> Meteorology Graduate Student
>> 3134 Agronomy Hall
>> www.meteor.iastate.edu/~jdduda <http://www.meteor.iastate.edu/%7Ejdduda>
>>
>> _______________________________________________
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>>
>>
>
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>


-- 
Jeff Duda
Iowa State University
Meteorology Graduate Student
3134 Agronomy Hall
www.meteor.iastate.edu/~jdduda
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