| Re: Reading and saving a file [message #74611] |
Thu, 27 January 2011 07:28  |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Paolo writes:
> Basically you want to use openw to get a file unit:
>
> openw, Unit, 'data.dat', /GET_LUN
>
> then printf to write the contents
>
> mydata=[1,2,3]
>
> printf,unit,mydata
>
> close,unit
Well, use FREE_LUN, instead of CLOSE. CLOSE won't
free the logical unit number to be used over again
when it is obtained this way. FREE_LUN will both
close the file *and* free the logical unit number.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
|
|
|
|
| Re: Reading and saving a file [message #74612 is a reply to message #74611] |
Thu, 27 January 2011 07:25  |
pgrigis
Messages: 436
Registered: September 2007
|
Senior Member |
|
|
On Jan 27, 7:32 am, Giovanna <giovanna01.san...@gmail.com> wrote:
> On 26 jan, 18:42, Paolo <pgri...@gmail.com> wrote:
>
>
>
>
>
>
>
>
>
>> On Jan 26, 1:19 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>> On 26 jan, 13:37, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> On 26 jan, 13:22, Paulo Penteado <pp.pente...@gmail.com> wrote:
>
>>>> > On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> > > So, i'm reading a file, i need to extract data and save into another
>>>> > > file, but is coming with strange characters.
>>>> > > In what format I save so they do not come up with these strange
>>>> > > characters and that JAVA can also read??
>
>>>> > Where do you see the problem? In IDL, from what was read? In the file
>>>> > written by IDL? Which characters are creating the problem?
>
>>>> > Generally speaking, any text files made in IDL should be easy to read
>>>> > in Java, since IDL only natively does ASCII strings, and Java natively
>>>> > uses Unicode.
>
>>>> I'm reading this file for example:http://pastebin.com/ctHZC8wvand
>>>> when i save characters appear. See:http://pastebin.com/HsQse0uy
>
>>>> My code:http://pastebin.com/eiAVywr1
>
>>>> Thanks
>
>>> Hi all,
>
>>> I'm reading a file, i need to extract data and save into another
>>> file, but is coming with strange characters.
>>> I'm reading this file for example:http://pastebin.com/ZLgMjrH3and
>>> when i save characters appear. See:http://pastebin.com/NbwKhqAw
>
>>> My code:http://pastebin.com/kShggiSa
>
>>> I need to save in a format that is then recognized by JAVA.
>
>>> Understood?
>
>> The solution is not to use the "save" function.
>> Use "printf" to write the contents to the new
>> file.
>
>> Ciao,
>> Paolo
>
> How do i use the printF? So: printF, file, 'teste1.dat'
>
> ??
Basically you want to use openw to get a file unit:
openw, Unit, 'data.dat', /GET_LUN
then printf to write the contents
mydata=[1,2,3]
printf,unit,mydata
close,unit
Ciao,
Paolo
|
|
|
|
| Re: Reading and saving a file [message #74615 is a reply to message #74612] |
Thu, 27 January 2011 04:32 |
Giovanna
Messages: 12
Registered: January 2011
|
Junior Member |
|
|
On 26 jan, 18:42, Paolo <pgri...@gmail.com> wrote:
> On Jan 26, 1:19 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>
>
>
>
>> On 26 jan, 13:37, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>> On 26 jan, 13:22, Paulo Penteado <pp.pente...@gmail.com> wrote:
>
>>>> On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> > So, i'm reading a file, i need to extract data and save into another
>>>> > file, but is coming with strange characters.
>>>> > In what format I save so they do not come up with these strange
>>>> > characters and that JAVA can also read??
>
>>>> Where do you see the problem? In IDL, from what was read? In the file
>>>> written by IDL? Which characters are creating the problem?
>
>>>> Generally speaking, any text files made in IDL should be easy to read
>>>> in Java, since IDL only natively does ASCII strings, and Java natively
>>>> uses Unicode.
>
>>> I'm reading this file for example:http://pastebin.com/ctHZC8wvand
>>> when i save characters appear. See:http://pastebin.com/HsQse0uy
>
>>> My code:http://pastebin.com/eiAVywr1
>
>>> Thanks
>
>> Hi all,
>
>> I'm reading a file, i need to extract data and save into another
>> file, but is coming with strange characters.
>> I'm reading this file for example:http://pastebin.com/ZLgMjrH3and
>> when i save characters appear. See:http://pastebin.com/NbwKhqAw
>
>> My code:http://pastebin.com/kShggiSa
>
>> I need to save in a format that is then recognized by JAVA.
>
>> Understood?
>
> The solution is not to use the "save" function.
> Use "printf" to write the contents to the new
> file.
>
> Ciao,
> Paolo
How do i use the printF? So: printF, file, 'teste1.dat'
??
|
|
|
|
| Re: Reading and saving a file [message #74626 is a reply to message #74615] |
Wed, 26 January 2011 12:42 |
pgrigis
Messages: 436
Registered: September 2007
|
Senior Member |
|
|
On Jan 26, 1:19 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
> On 26 jan, 13:37, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>
>
>
>
>
>
>
>
>> On 26 jan, 13:22, Paulo Penteado <pp.pente...@gmail.com> wrote:
>
>>> On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> So, i'm reading a file, i need to extract data and save into another
>>>> file, but is coming with strange characters.
>>>> In what format I save so they do not come up with these strange
>>>> characters and that JAVA can also read??
>
>>> Where do you see the problem? In IDL, from what was read? In the file
>>> written by IDL? Which characters are creating the problem?
>
>>> Generally speaking, any text files made in IDL should be easy to read
>>> in Java, since IDL only natively does ASCII strings, and Java natively
>>> uses Unicode.
>
>> I'm reading this file for example:http://pastebin.com/ctHZC8wvand
>> when i save characters appear. See:http://pastebin.com/HsQse0uy
>
>> My code:http://pastebin.com/eiAVywr1
>
>> Thanks
>
> Hi all,
>
> I'm reading a file, i need to extract data and save into another
> file, but is coming with strange characters.
> I'm reading this file for example:http://pastebin.com/ZLgMjrH3and
> when i save characters appear. See:http://pastebin.com/NbwKhqAw
>
> My code:http://pastebin.com/kShggiSa
>
> I need to save in a format that is then recognized by JAVA.
>
> Understood?
The solution is not to use the "save" function.
Use "printf" to write the contents to the new
file.
Ciao,
Paolo
|
|
|
|
| Re: Reading and saving a file [message #74629 is a reply to message #74626] |
Wed, 26 January 2011 10:44 |
Gray
Messages: 253
Registered: February 2010
|
Senior Member |
|
|
On Jan 26, 1:19 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
> On 26 jan, 13:37, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>
>
>
>
>
>
>
>
>> On 26 jan, 13:22, Paulo Penteado <pp.pente...@gmail.com> wrote:
>
>>> On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> So, i'm reading a file, i need to extract data and save into another
>>>> file, but is coming with strange characters.
>>>> In what format I save so they do not come up with these strange
>>>> characters and that JAVA can also read??
>
>>> Where do you see the problem? In IDL, from what was read? In the file
>>> written by IDL? Which characters are creating the problem?
>
>>> Generally speaking, any text files made in IDL should be easy to read
>>> in Java, since IDL only natively does ASCII strings, and Java natively
>>> uses Unicode.
>
>> I'm reading this file for example:http://pastebin.com/ctHZC8wvand
>> when i save characters appear. See:http://pastebin.com/HsQse0uy
>
>> My code:http://pastebin.com/eiAVywr1
>
>> Thanks
>
> Hi all,
>
> I'm reading a file, i need to extract data and save into another
> file, but is coming with strange characters.
> I'm reading this file for example:http://pastebin.com/ZLgMjrH3and
> when i save characters appear. See:http://pastebin.com/NbwKhqAw
>
> My code:http://pastebin.com/kShggiSa
>
> I need to save in a format that is then recognized by JAVA.
>
> Understood?
So, you're saying that when you restore your saved 'teste1.dat', and
type print, file you get those characters? Could it be possible that
your original file has control characters hidden? Try opening it with
a plain old text editor to see if there are hidden characters.
|
|
|
|
| Re: Reading and saving a file [message #74630 is a reply to message #74629] |
Wed, 26 January 2011 10:19 |
Giovanna
Messages: 12
Registered: January 2011
|
Junior Member |
|
|
On 26 jan, 13:37, Giovanna <giovanna01.san...@gmail.com> wrote:
> On 26 jan, 13:22, Paulo Penteado <pp.pente...@gmail.com> wrote:
>
>> On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>> So, i'm reading a file, i need to extract data and save into another
>>> file, but is coming with strange characters.
>>> In what format I save so they do not come up with these strange
>>> characters and that JAVA can also read??
>
>> Where do you see the problem? In IDL, from what was read? In the file
>> written by IDL? Which characters are creating the problem?
>
>> Generally speaking, any text files made in IDL should be easy to read
>> in Java, since IDL only natively does ASCII strings, and Java natively
>> uses Unicode.
>
> I'm reading this file for example:http://pastebin.com/ctHZC8wvand
> when i save characters appear. See:http://pastebin.com/HsQse0uy
>
> My code:http://pastebin.com/eiAVywr1
>
> Thanks
Hi all,
I'm reading a file, i need to extract data and save into another
file, but is coming with strange characters.
I'm reading this file for example: http://pastebin.com/ZLgMjrH3 and
when i save characters appear. See: http://pastebin.com/NbwKhqAw
My code: http://pastebin.com/kShggiSa
I need to save in a format that is then recognized by JAVA.
Understood?
|
|
|
|
| Re: Reading and saving a file [message #74637 is a reply to message #74630] |
Wed, 26 January 2011 07:37 |
Giovanna
Messages: 12
Registered: January 2011
|
Junior Member |
|
|
On 26 jan, 13:22, Paulo Penteado <pp.pente...@gmail.com> wrote:
> On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>> So, i'm reading a file, i need to extract data and save into another
>> file, but is coming with strange characters.
>> In what format I save so they do not come up with these strange
>> characters and that JAVA can also read??
>
> Where do you see the problem? In IDL, from what was read? In the file
> written by IDL? Which characters are creating the problem?
>
> Generally speaking, any text files made in IDL should be easy to read
> in Java, since IDL only natively does ASCII strings, and Java natively
> uses Unicode.
I'm reading this file for example: http://pastebin.com/ctHZC8wv and
when i save characters appear. See: http://pastebin.com/HsQse0uy
My code: http://pastebin.com/eiAVywr1
Thanks
|
|
|
|
| Re: Reading and saving a file [message #74638 is a reply to message #74637] |
Wed, 26 January 2011 07:31 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Paulo Penteado writes:
> Where do you see the problem? In IDL, from what was read? In the file
> written by IDL? Which characters are creating the problem?
>
> Generally speaking, any text files made in IDL should be easy to read
> in Java, since IDL only natively does ASCII strings, and Java natively
> uses Unicode.
Well, she "saved" the file in an IDL save file. That
will probably create some problems for JAVA. :-)
I think the real problem is that the user is
confusing the notion of "file" with "variables
in the file". You don't have to "save" this file.
It's already saved. You're reading it!!
If it is variables you want to save, you are going
to have to do something else completely. Maybe just
read a book on general programming principles.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
|
|
|
|
| Re: Reading and saving a file [message #74640 is a reply to message #74638] |
Wed, 26 January 2011 07:22 |
penteado
Messages: 866
Registered: February 2018
|
Senior Member
Administrator |
|
|
On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
> So, i'm reading a file, i need to extract data and save into another
> file, but is coming with strange characters.
> In what format I save so they do not come up with these strange
> characters and that JAVA can also read??
Where do you see the problem? In IDL, from what was read? In the file
written by IDL? Which characters are creating the problem?
Generally speaking, any text files made in IDL should be easy to read
in Java, since IDL only natively does ASCII strings, and Java natively
uses Unicode.
|
|
|
|
| Re: Reading and saving a file [message #74643 is a reply to message #74640] |
Wed, 26 January 2011 06:48 |
Giovanna
Messages: 12
Registered: January 2011
|
Junior Member |
|
|
On 26 jan, 11:52, Gray <grayliketheco...@gmail.com> wrote:
> On Jan 26, 8:25 am, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>> Hi all,
>
>> I need to read and save a file using IDL, but my code is reading and
>> saving only the first line. Please, see my code:
>
>> PRO READ_FILE
>> OpenR, lun, 'C:\Documents and Settings\Web\IDLWorkspace\Projeto_Estudo
>> \dados.dat', /Get_lun
>> file = ''
>> ReadF, lun, file
>> SAVE, FILENAME=('C:\Documents and Settings\Web\IDLWorkspace
>> \Projeto_Estudo\teste1.dat')
>
>> ;print,file
>> END
>
> It reads in the first line because "file" is a string, and not a
> string array. If you want the whole thing you need:
>
> file = strarr(file_lines(...))
> readf, lun, file
So, i'm reading a file, i need to extract data and save into another
file, but is coming with strange characters.
In what format I save so they do not come up with these strange
characters and that JAVA can also read??
Thanks
|
|
|
|
| Re: Reading and saving a file [message #74645 is a reply to message #74643] |
Wed, 26 January 2011 05:52 |
Gray
Messages: 253
Registered: February 2010
|
Senior Member |
|
|
On Jan 26, 8:25 am, Giovanna <giovanna01.san...@gmail.com> wrote:
> Hi all,
>
> I need to read and save a file using IDL, but my code is reading and
> saving only the first line. Please, see my code:
>
> PRO READ_FILE
> OpenR, lun, 'C:\Documents and Settings\Web\IDLWorkspace\Projeto_Estudo
> \dados.dat', /Get_lun
> file = ''
> ReadF, lun, file
> SAVE, FILENAME=('C:\Documents and Settings\Web\IDLWorkspace
> \Projeto_Estudo\teste1.dat')
>
> ;print,file
> END
It reads in the first line because "file" is a string, and not a
string array. If you want the whole thing you need:
file = strarr(file_lines(...))
readf, lun, file
|
|
|
|
| Re: Reading and saving a file [message #74707 is a reply to message #74612] |
Thu, 27 January 2011 08:24 |
Giovanna
Messages: 12
Registered: January 2011
|
Junior Member |
|
|
On 27 jan, 13:25, Paolo <pgri...@gmail.com> wrote:
> On Jan 27, 7:32 am, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>
>
>
>
>> On 26 jan, 18:42, Paolo <pgri...@gmail.com> wrote:
>
>>> On Jan 26, 1:19 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> On 26 jan, 13:37, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> > On 26 jan, 13:22, Paulo Penteado <pp.pente...@gmail.com> wrote:
>
>>>> > > On Jan 26, 12:48 pm, Giovanna <giovanna01.san...@gmail.com> wrote:
>
>>>> > > > So, i'm reading a file, i need to extract data and save into another
>>>> > > > file, but is coming with strange characters.
>>>> > > > In what format I save so they do not come up with these strange
>>>> > > > characters and that JAVA can also read??
>
>>>> > > Where do you see the problem? In IDL, from what was read? In the file
>>>> > > written by IDL? Which characters are creating the problem?
>
>>>> > > Generally speaking, any text files made in IDL should be easy to read
>>>> > > in Java, since IDL only natively does ASCII strings, and Java natively
>>>> > > uses Unicode.
>
>>>> > I'm reading this file for example:http://pastebin.com/ctHZC8wvand
>>>> > when i save characters appear. See:http://pastebin.com/HsQse0uy
>
>>>> > My code:http://pastebin.com/eiAVywr1
>
>>>> > Thanks
>
>>>> Hi all,
>
>>>> I'm reading a file, i need to extract data and save into another
>>>> file, but is coming with strange characters.
>>>> I'm reading this file for example:http://pastebin.com/ZLgMjrH3and
>>>> when i save characters appear. See:http://pastebin.com/NbwKhqAw
>
>>>> My code:http://pastebin.com/kShggiSa
>
>>>> I need to save in a format that is then recognized by JAVA.
>
>>>> Understood?
>
>>> The solution is not to use the "save" function.
>>> Use "printf" to write the contents to the new
>>> file.
>
>>> Ciao,
>>> Paolo
>
>> How do i use the printF? So: printF, file, 'teste1.dat'
>
>> ??
>
> Basically you want to use openw to get a file unit:
>
> openw, Unit, 'data.dat', /GET_LUN
>
> then printf to write the contents
>
> mydata=[1,2,3]
>
> printf,unit,mydata
>
> close,unit
>
> Ciao,
> Paolo
Hi,
This error is occurring when running:
Error -
OPENR: All available logical units are currently in use.
% Execution halted at: READ_FILE 3 read_file.pro
% $MAIN$
This error is occurring this line: OpenR, lun, 'dados.dat', /Get_lun
What could be??
Thanks
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
