[gradsusr] Problem in setting vrange for negative values -scatterplot

[Rashed Mahmood]

 Maida

One further question that may be looked at is:
the command below should give one "Time" value

cpc=ave(soilw,t=1,t=27)/100

and similar is true for "mod" variable.

If above is fine.. Another test can be to check anomaly and see if extends
to negative location,,,something like this:

cpc2=cpc-soilw

mod2=mod-mrso

d cpc2;mod2

Good luck

Rashed







On Wed, Aug 1, 2012 at 1:34 PM, Maida Zahid <maidazahid.pmd at gmail.com>wrote:

> Rashed
>
>  Thank you for replying. The data surely have negative values. You can see
> variables range from the following commands.
>
> ga-> set gxout scatter
> ga-> d cpc;mod
> *-0.5 8 -15 50 *
>
> Output of the above mentioned commands is attached so that you can have a
> look at the range.
>
> Regards
> Maida
>
> On Wed, Aug 1, 2012 at 1:52 PM, Rashed Mahmood <rashidcomsis at gmail.com>wrote:
>
>> Maida
>>
>> Are you sure that your variables "cpc" and "mod" have negative values?
>> From your code it appears (but I am not sure) that the variables are
>> positive. As you know, the scatter plot won't move towards negative axis
>> unless one of the variables have negative values. So may be you would like
>> to confirm variable values first.
>>
>> Good luck
>>
>> Rashed
>>
>>
>>
>>
>>
>> On Wed, Aug 1, 2012 at 12:26 PM, Maida Zahid <maidazahid.pmd at gmail.com>wrote:
>>
>>> Dear Sir,
>>>
>>>     Thank you so much. I have used this link already for making scatter
>>> plot. The main problem is that scatter plot is plotting only positive
>>> values neglecting negative values whether i set vrange or not.
>>>
>>> Regards
>>>
>>>
>
>
>> On Wed, Aug 1, 2012 at 12:45 PM, Muhammad Afzaal <afzaalkarori at gmail.com>wrote:
>>>
>>>> Dear Maida
>>>>
>>>> Following link would be useful for you;
>>>>
>>>>
>>>> http://cookbooks.opengrads.org/index.php?title=Recipe-009:_Scatter_plot_with_linear_fit_and_basic_statistics
>>>>
>>>>
>>>>
>>>> MUHAMMAD AFZAAL KARORI
>>>>
>>>> Institute of Atmospheric Physics
>>>> Chinese Academy of Sciences
>>>> Beijing, China
>>>>
>>>> Pakistan Meteorological Department
>>>> Islamabad - Pakistan
>>>>
>>>>
>>>> On Tue, Jul 31, 2012 at 12:10 PM, Maida Zahid <maidazahid.pmd at gmail.com
>>>> > wrote:
>>>>
>>>>> Dear all,
>>>>>
>>>>>
>>>>>   I am trying to draw scatter plot from two files. Following are the
>>>>> commands which i have used to plot it.
>>>>>
>>>>> xdfopen soilw.mon.mean.v2-2deg-197901-200512-JJAS.ctl
>>>>> define cpc=ave(soilw,t=1,t=27)/100
>>>>> xdfopen
>>>>> mrso_Lmon_bcc-csm1-1-2deg_historical_r1i1p1_197901-200512-JJAS.ctl
>>>>> set dfile 2
>>>>> define mod=ave(mrso,t=1,t=27)/100
>>>>> set gxout scatter
>>>>> set vrange -0.5 8
>>>>> set vrange2 -2 20
>>>>> d cpc;mod
>>>>>
>>>>> output of this display is attached.
>>>>> I am unable to set my axis for negative values.Every time it starts
>>>>> from 0 to positive values either I set the "vrange" to positive values or
>>>>> negative values.
>>>>> How can i solve this problem?
>>>>>
>>>>> grads version and Os details are:
>>>>> Grads version:Grid Analysis and Display System (GrADS) Version 1.9b4
>>>>> Linux OS: Linux cslogin 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:14 EDT
>>>>> 2010 x86_64 x86_64 x86_64 GNU/Linux
>>>>>
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>> Regards
>>>>> Maida Zahid
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gradsusr mailing list
>>>>> gradsusr at gradsusr.org
>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>
>>>>>
>>>>
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>>>>
>>>
>>>
>>> --
>>> ------------------------------------------------------
>>> Maida Zahid
>>> Assistant Director/Meteorologist
>>> Research & Development Division
>>> Pakistan Meteorological Department
>>> Sector H-8/2, Islamabad
>>> -------------------------------------------------------
>>> Contact # : 051-9250334
>>> -------------------------------------------------------
>>>
>>>
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>>>
>>
>>
>>
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>
>
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-- 
========================
*Rashed Mahmood*
*PhD Student*
*Institute of Atmospheric Physics (IAP)*
*Chinese Academy of Sciences (CAS)*
*Beijing, China.*
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