[gradsusr] Error opening .txt file in a grads script

[Jeff Duda]

Keren,

The error tells you what the problem is. You must have a "draw mark"
command somewhere in your script that has a syntax error in it. You can use
the grads documentation index to determine values of the various arguments
to that function. I suspect you have an error in your x and y arguments in
the function call. The x and y arguments need to be in real page units, not
world coordinates. You'll need to use the 'query (position)' functions to
translate between world coordinates, grid coordinates, and page
coordinates. A commonly used one is 'q w2xy', which would convert world
coordinates to real page coordinates.

Jeff Duda

On Mon, Nov 30, 2015 at 12:51 PM, Keren Rosado - NOAA Affiliate <
keren.rosado at noaa.gov> wrote:

> The text file is big but from what I can see is all numbers.
>
>  11.228   -73.969   1
>  13.983     5.299   1
>  13.790   -14.934   1
>  22.645   -51.073   1
>  11.254   -73.973   1
>   6.508   -61.990   1
>  11.405     4.011   1
>  29.012   -59.311   1
>  11.262   -74.027   1
>  10.631   -68.972   1
>  11.270   -73.941   1
>  11.341   -73.955   1
>  11.295   -73.604   1
>  11.269   -73.595   1
>  11.231   -73.537   1
>  11.254   -73.611   1
>
>
> When I type  "run namescript.gs" I get the following error:
>
>  DRAW error: Syntax is DRAW MARK marktype x y size
> DRAW error: Syntax is DRAW MARK marktype x y size
> DRAW error: Syntax is DRAW MARK marktype x y size
> DRAW error: Syntax is DRAW MARK marktype x y size
> DRAW error: Syntax is DRAW MARK marktype x y size
> DRAW error: Syntax is DRAW MARK marktype x y size
>
> But when I run the script line by line the first error I get is the one I
> send in the first email.
>
>
> Thanks
>
>
> ----
> Keren Rosado
> PhD Candidate/Howard University/NOAA EPP GRTSP Fellow
> Intern/NOAA/NWS/NCEP/EMC
> 5830 University Research CT
> Cubicle 2795
> College Park, MD 20740
> Tel: (301)-683-3816 <%28301%29-683-3763>
> Cel: *(407)-621-1676 *
> Email: Keren.Rosado at noaa.gov <Bin.Liu at noaa.gov>
>
> On Mon, Nov 30, 2015 at 1:16 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:
>
>> The snippet of script code you included isn't consistent with the output
>> you included. I can't see from what you included what would be the cause of
>> the error. Do you have non-alphanumeric characters in your text file?
>> Otherwise I suspect you have a syntax error in your script somewhere else.
>>
>> Jeff Duda
>>
>> On Mon, Nov 30, 2015 at 10:36 AM, Keren Rosado - NOAA Affiliate <
>> keren.rosado at noaa.gov> wrote:
>>
>>> Hello,
>>>
>>> I am trying to open a .txt file in a .gs grads script without luck.
>>> Grads version 2.0.1
>>>
>>>
>>> This is what I have
>>>
>>> 'open dummy.ctl'
>>> file = 'A20100826a.txt'
>>> colors="1 2 3 4 5 6 7 8 9 10 11 12 13"
>>> ccount=0
>>>
>>> rc=1
>>> while (rc != 2)
>>>    data=read(file)
>>>    rc=sublin(data,1)
>>>    if (rc != 2)
>>>       line=sublin(data,2)
>>>       chk=substr(line,1,10)
>>>       if (chk != "----------")
>>> .
>>> .
>>> .
>>> .
>>>  The code keeps going but the error is at the "file" line.
>>>
>>> Here is the error
>>> file = 'A20100826a.txt'
>>> Syntax Error:  Expected operand or '('
>>>   Error ocurred at column 1
>>> DEFINE error:  Invalid expression.
>>>
>>> Thanks!
>>>
>>>
>>>
>>> ----
>>> Keren Rosado
>>> PhD Candidate/Howard University/NOAA EPP GRTSP Fellow
>>> Intern/NOAA/NWS/NCEP/EMC
>>> 5830 University Research CT
>>> Cubicle 2795
>>> College Park, MD 20740
>>> Tel: (301)-683-3816 <%28301%29-683-3763>
>>> Cel: *(407)-621-1676 <%28407%29-621-1676> *
>>> Email: Keren.Rosado at noaa.gov <Bin.Liu at noaa.gov>
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
>>
>> --
>> Jeff Duda
>> Graduate research assistant
>> University of Oklahoma School of Meteorology
>> Center for Analysis and Prediction of Storms
>>
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>>
>>
>
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>


-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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