Re: asciiread

On Mon, 29 Jun 2009, jam hong wrote:

>
>
> Dear Mary
> I want to use asciiread to read many files.
> I used the do loop to change the file name but I think I did not get the format right.
> What is the format when I want to change the file name following n (which is numbers from 101 - 365)
>
> My code is
> begin
> ; Create variables to contain data.
> i = 0
> j = 1
> do i = 1,265
> n = 101
> g1 = asciiread("/usr/rmt_share/scratch79/jam/MODIS_aerosol/2007/MOD_Terra_AODv401_2007" + n", -1,"float")

Hi Jam,

You have an extra quote in there.

This should clear it up a little:

   dir = "/usr/rmt_share/scratch79/jam/MODIS_aerosol/2007/"
   filename = "MOD_Terra_AODv401_2007" + n
   g1 = asciiread(dir + filename, -1, "float")

> n11 = dimsizes(g1)
> print(g1)
> v1 = new(256,float)
> j = 0
> do k = 0, n11-1
> if g1(k) .eq. 310550052
> v1(i) = g1(k+2)
> else
> v1(i) = -999
> end if
> end do

I'm not sure what you're trying to do here, but it will
fail if k = n11-2 or k = n11-1, because k+2 will then
be n11 or n11+1, which is outside the range of "g1".

--Mary

> n = n + 1
> end do
> print(v1)
> end
> Thanks
> Jam
>> Date: Mon, 29 Jun 2009 07:49:02 -0600
>> From: haley_at_ucar.edu
>> To: ncl-talk_at_ucar.edu
>> Subject: Re: Order of function load matters ??
>>
>>
>> Dave B will need to weig
> h in here, but I wanted to say that with
>> python, the functions can be listed in any order, but they have to be
>> listed before any main code that references them.
>>
>> Here's an example:
>>
>> def two(y):
>> y2 = one(y) + 2
>> return y2
>>
>> def one(x):
>> x2 = x + 1
>> return x2
>>
>> z = 5
>> z2 = one(z) + two(z)
>> print z2
>>
>> Note that function "two" (defined first) references function "one",
>> but python doesn't complain about this. If you moved function "one"
>> and/or "two" after the main code, it would complain.
>>
>> So, yes, it would be nice if you could do something similar in NCL and
>> not have to worry about function ordering. I don't know what the
>> expense would be for speed however. Arindam makes a good point on
>> this.
>>
>>
>> --Mary
>>
>>
>> On Sun, 28 Jun 2009, Arinda
> m Chakraborty wrote:
>>
>>> Hello All,
>>> probably 'load' of NCL defines all the functions in memory including their
>>> dependencies and therefore the functions being used have to be predefined. One
>>> way out could be just to list the functions, which are defined within the
>>> files, on to the memory while 'load'-ing (say, after syntax checking, note the
>>> file name and line number where the function starts). A function can be loaded
>>> to the memory only when it is called. This way the dependency to a function
>>> which is being 'load'-ed later can be avoided. A possible drawback of this
>>> could be decrease of performance since NCL needs to do more work during
>>> execution of the job.
>>>
>>> regards,
>>>
>>> arindam
>>> --
>>>
>>> ---------- Original Message -----------
>>> From: "Saji N. Hameed"
> <saji_at_apcc21.net>
>>> To: Dennis Shea <shea_at_ucar.edu>
>>> Cc: ncl-talk_at_ucar.edu
>>> Sent: Sat, 27 Jun 2009 22:57:47 +0900
>>> Subject: Re: Order of function load matters ??
>>>
>>>> Hi Dennis,
>>>>
>>>>> Unlike a language like (say) fortran which has a compile/link/load
>>>>> sequence where the linker sets up pointers to any callable
>>>>> functions, NCL does not.
>>>>
>>>>> I think languages like python work th same way.
>>>>
>>>> Maybe not, this order dependency is not there in Ruby and I guess
>>>> not in Python as well. Within a script I could load two libraries
>>>> lib_a and lib_b in any order, even when lib_b is dependent on lib_a
>>>>
>>>> saji
>>>>
>>>>>
>>>>>
>>>>>
>>>
> >> http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclStatements.shtml
>>>>>
>>>>> Jack Glendening wrote:
>>>>>> Using NCL 5.0.0, I have sets of functions in two files which I load
>>>>>> immediately one after the other ala
>>>>>>
>>>>>> load "FunctionsFile_A"
>>>>>> load "FunctionsFile_B"
>>>>>> NCL COMMANDS WHICH CALL FUNCTIONS IN THE ABOVE FILES
>>>>>>
>>>>>> I just altered one of the functions in "FucntionsFile_A" to utilize a
>>>>>> new function "nintspan". When I placed the new function at the top of
>>>>>> "FunctionsFile_A" it worked. But if I moved the new function to
>>>>>> "FunctionsFile_B" I got the message "fatal:Undefined identifier:
>>>>>> (nintspan) is undefined". So apparently the the ordering of the> >>>> function definitions matters ?! This does not make sense to me, since
>>>>>> one cannot always know the ordering of the function calls.
>>>>>>
>>>>>> Jack Glendening
>>>>>>
>>>>>> _______________________________________________
>>>>>> ncl-talk mailing list
>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>> _______________________________________________
>>>>> ncl-talk mailing list
>>>>> List instructions, subscriber options, unsubscribe:
>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>
>>>>
>>>> --
>>>> Saji N. Hameed
>>>>
>>>> APEC Climate Center
>>>> 1463 U-dong, Haeun
> dae-gu, +82 51 745 3951
>>>> BUSAN 612-020, KOREA saji_at_apcc21.net
>>>> Fax: +82-51-745-3999
>>>>
>>>> _______________________________________________
>>>> ncl-talk mailing list
>>>> List instructions, subscriber options, unsubscribe:
>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>
>>>> --
>>>> This message has been scanned for viruses and
>>>> dangerous content by MailScanner, and is
>>>> believed to be clean.
>>> ------- End of Original Message -------
>>>
>>>
>>> --
>>> This message has been scanned for viruses and
>>> dangerous content by MailScanner, and is
>>> believed to be clean.
>>>
>>> _______________________________________________
>>> ncl-talk mailing list
>>> Li
> st instructions, subscriber options, unsubscribe:
>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>
>> _______________________________________________
>> ncl-talk mailing list
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
> Windows Live™: Keep your life in sync. Check it out!
> _________________________________________________________________
> Drag n’ drop—Get easy photo sharing with Windows Live™ Photos.
>
> http://www.microsoft.com/windows/windowslive/products/photos.aspx

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Mon Jun 29 2009 - 16:21:35 MDT