[gradsusr] Hello to all users of Grads

avi kojokro kojokroavi at gmail.com
Mon Apr 1 06:25:55 EDT 2013


The problem was in two lines,in this command
while (time <= end_time)
and this command
time=start_time

Now there is another problem, the result comes out from grads is signed in
one line, Is there a way to loop the result that it will record each year
separately?.I add the image file


2013/4/1 Rupak Rajbhandari <rupak.rajbhandari at gmail.com>

> It says error occured at line 22.
> your code should be
> 'set t 'sart_time
>
> -rupak
>
>
>
> On Mon, Apr 1, 2013 at 3:05 PM, avi kojokro <kojokroavi at gmail.com> wrote:
>
>> To Thomas Robinson Thanks for the example, I tried the script in this way
>> as you showing me :
>>
>>
>>
>> 'reinit'
>> 'set display color white'
>> f = 'http://goldsmr2.sci.gsfc.nasa.gov:80/dods/MATMNXSLV'
>> 'sdfopen 'f
>>
>>
>> start_time=3
>> end_time=12*34
>>
>> 'set parea 0.7 10.5 0.6 8'
>> 'set lat 32.5'
>> 'set lon 35'
>>
>> set t 'start_time'
>> while (time <=end_time
>> 'set t  'time
>>
>>
>> 'd t850-273.16'
>> cc=subwrd(result,4)
>> 'q time'
>> ctime = subwrd(result,3)
>> chour = substr(ctime,9,15)
>> 'draw string 0.5 8 'chour'='cc
>>
>>
>> time=time+12
>> endwhile
>>
>>
>> 'printim avrg.png x1000 y700'
>> 'end'
>>
>>
>> But I get an error , And I attach a screenshot of the error , What did I
>> do wrong?.
>>
>>
>> 2013/4/1 Thomas Robinson <ter at hawaii.edu>
>>
>>> Aloha Avi,
>>>
>>> It looks like your code for each time step is the same.  You can loop
>>> using while/endwhile.  Try this and change the variable end_time to
>>> whatever you want it to be:
>>>
>>>  'reinit'
>>> 'set display color white'
>>> f = 'http://goldsmr2.sci.gsfc.nasa.gov:80/dods/MATMNXSLV<http://goldsmr2.sci.gsfc.nasa.gov/dods/MATMNXSLV>
>>> '
>>> 'sdfopen 'f
>>>
>>> ** Set the start and end times (month number)
>>> start_time=3
>>> end_time=12*34
>>>
>>>
>>> 'set parea 0.7 10.5 0.6 8'
>>> 'set lat 32.5'
>>> 'set lon 35'
>>>
>>> ** Set the time to the start time
>>> time=start_time
>>> ** Loop through the times
>>> while (time <=end_time
>>> **Set time
>>> 'set t ' time
>>>
>>> 'd t850-273.16'
>>> cc=subwrd(result,4)
>>> 'q time'
>>> ctime = subwrd(result,3)
>>> chour = substr(ctime,9,15)
>>> 'draw string 0.5 8 'chour'='cc
>>>
>>> ** Set the time to the next year
>>> time=time+12
>>>
>>> endwhile
>>>
>>>
>>>
>>> On Sun, Mar 31, 2013 at 8:26 PM, avi kojokro <kojokroavi at gmail.com>wrote:
>>>
>>>>
>>>> Thank you.
>>>> I did not phrase the question correctly, I think that the example I
>>>> gave is not good. I will try to explain myself again.
>>>> First I must say that I am working with windows not Linux.
>>>> I want to get data from a server that already gives me a monthly
>>>> averages, here's a better example of what i means:
>>>>
>>>>
>>>> 'reinit'
>>>> 'set display color white'
>>>> f = 'http://goldsmr2.sci.gsfc.nasa.gov:80/dods/MATMNXSLV'
>>>> 'sdfopen 'f
>>>>
>>>>
>>>>
>>>> 'set parea 0.7 10.5 0.6 8'
>>>> 'set lat 32.5'
>>>> 'set lon 35'
>>>>
>>>> 'set t 3 '
>>>> 'd t850-273.16'
>>>> cc=subwrd(result,4)
>>>> 'q time'
>>>> ctime = subwrd(result,3)
>>>> chour = substr(ctime,9,15)
>>>> 'draw string 0.5 8 'chour'='cc
>>>>
>>>>
>>>> 'set t 15 '
>>>> 'd t850-273.16'
>>>> cc=subwrd(result,4)
>>>> 'q time'
>>>> ctime = subwrd(result,3)
>>>> chour = substr(ctime,9,15)
>>>> 'draw string 0.5 7.7 'chour'='cc
>>>>
>>>>
>>>> 'set t 27 '
>>>> 'd t850-273.16'
>>>> cc=subwrd(result,4)
>>>> 'q time'
>>>> ctime = subwrd(result,3)
>>>> chour = substr(ctime,9,15)
>>>> 'draw string 0.5 7.7 'chour'='cc
>>>>
>>>> How do I create a loop to do it automatically, the server provides data from
>>>> 1979 to 2013, and I want to get only the data of March.
>>>>
>>>> I hope I have explained myself better.
>>>> Regards
>>>> avi.
>>>>
>>>>
>>>>
>>>> 2013/4/1 Muhammad Yunus Ahmad Mazuki <ukm.yunus at gmail.com>
>>>>
>>>>> The average function itself has what you needed. ave(var1,t=1,t=360,*
>>>>> 12*), this means it will average values from t=1,t=13,t=25 ... until
>>>>> t=360.Example of point value extraction.
>>>>>
>>>>> 'sdfopen foo.nc'
>>>>> lonvalue=90
>>>>> latvalue=0
>>>>> levvalue=850
>>>>> tvalue=1
>>>>> 'set lon 'lonvalue
>>>>> 'set lat 'latvalue
>>>>> 'set t 'tvalue
>>>>> 'set lev 'levvalue
>>>>> 'd variable1'
>>>>> catch=sublin(result,4)
>>>>> 'set gxout fwrite'
>>>>> 'set fwrite point.dat'
>>>>> 'd 'catch
>>>>> 'disable fwrite'
>>>>>
>>>>> This is a basic one, modify it as your need requires. I'm not sure
>>>>> about excel, but this will create a binary file, which can be opened by
>>>>> GrADS (using a controller file) and Scilab (which I use for further
>>>>> analysis).
>>>>>
>>>>> Yunus.
>>>>>
>>>>>
>>>>> On Sun, Mar 31, 2013 at 2:25 PM, avi kojokro <kojokroavi at gmail.com>wrote:
>>>>>
>>>>>> I'm trying to do a script of averages like this example :
>>>>>>
>>>>>>
>>>>>> 'set t 1 '
>>>>>> 'define varav=ave(t850-273.16,t=1,t=1,1)'
>>>>>> 'd varav'
>>>>>> cc=subwrd(result,4)
>>>>>> 'draw string 0.5 8 jan='cc
>>>>>>
>>>>>> I want my script calculates every 12 months, how do I create a loop
>>>>>> script that calculates every 12 month average of the same month.
>>>>>> I will give an example of what I mean: I want to begin to calculate average
>>>>>> of January 1979 and then later to calculate directly the January 1980 and
>>>>>> so on.
>>>>>> Is it possible that the result will write directly to the Excel file,
>>>>>> then how to write the command to it.
>>>>>>
>>>>>> Please note that I first started Grads.
>>>>>>
>>>>>> Thank you so much.
>>>>>>
>>>>>> avi
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> gradsusr mailing list
>>>>>> gradsusr at gradsusr.org
>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gradsusr mailing list
>>>>> gradsusr at gradsusr.org
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>>>>>
>>>>>
>>>>
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>>>>
>>>>
>>>
>>>
>>> --
>>> Tom Robinson
>>> President - Graduate Student Organization
>>> Graduate Student - Department of Meteorology
>>> 732-718-2323
>>>
>>> _______________________________________________
>>> gradsusr mailing list
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>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
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>
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