ZDEF

[Mateus da Silva Teixeira]

Jennifer,

I use the 'OPTION zrev', but it made my profile inverted, like the
graphic attached.
So, I think that isn't works.

Mateus

Jennifer M. Adams escreveu:
>
> On Oct 31, 2006, at 12:29 PM, Mateus da Silva Teixeira wrote:
>
>> Dear Jennifer,
>>
>> Please, think about a situation in which you have 1,000 vertical levels.
>> Should I write all these 1,000 levels explicitly? Why should I made this
>> if there is a easier way to do the same thing?
> I agree that descriptor files can get lengthy when using the "LEVELS"
> option with high-res data, but sometimes it is unavoidable. It would
> take about 4-5 lines of code in a GrADS script to write 1000 level
> values in a text file.
> Did the 'OPTIONS zrev' trick work?
>
>> By the way, if it should not be used, why it continues into the on-line
>> GrADS documentation? Remember that GrADS have a lot of new users that
>> use intensively that documentation and the experienced users use that as
>> reference.
> Ah, that is an oversight. I have just fixed it.
>
> Jennifer
>
>
>>
>> Mateus
>>
>>
>> Jennifer M. Adams escreveu:
>>> If you must use 'ZDEF linear', try this:
>>> ZDEF 19 linear 100 50
>>> OPTIONS zrev
>>>
>>> What's wrong with the 'ZDEF 19 levels ...' option you wrote out?
>>> Why complain when you've got something that works?
>>>
>>> The bugs regarding bad ZDEF entries were in the older versions that
>>> allowed a negative or zero increment. Non-positive grid increments
>>> cause problems in a few different places in the code, places you might
>>> not necessarily visit during a normal GrADS session.
>>>
>>> Jennifer
>>>
>>> On Oct 30, 2006, at 11:41 AM, Mateus da Silva Teixeira wrote:
>>>
>>>> Dear GrADS users,
>>>>
>>>> I'm not sure if it is a bug or is a problem with my CTL files, but
>>>> always that try to use negative increments in ZDEF, like
>>>> ZDEF 19 LINEAR 1000 -50
>>>> I get the following error:
>>>>
>>>> Open Error:  Missing or invalid dimension increment value
>>>>  --> The invalid description file record is:
>>>>  --> ZDEF 19 LINEAR 1000 -50
>>>>
>>>>  The data file was not opened.
>>>>
>>>> But when replace the above ZDEF line by this
>>>> ZDEF 19 LEVELS 1000 950 900 850 800 750 700 650
>>>>            600 550 500 450 400 350 300 250 200
>>>>            150 100
>>>>
>>>>
>>>> It works. I'm using the version v1.9b4 32-bit. However, when using the
>>>> version v1.8s11, any error do occur with negative increment in the
>>>> CTL file.
>>>> Is this a bug of the new version?
>>>>
>>>> Thanks
>>>>
>>>> Mateus
>>>>
>>>>
>>>>
>>>> _______________________________________________________
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>>>>
>>>
>>> Jennifer M. Adams
>>> IGES/COLA
>>> 4041 Powder Mill Road, Suite 302
>>> Beltsville, MD 20705
>>> jma at cola.iges.org <mailto:jma at cola.iges.org>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________________
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>
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Beltsville, MD 20705
> jma at cola.iges.org <mailto:jma at cola.iges.org>
>
>
>

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