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Re: Writing in text file [message #72672]

Tue, 28 September 2010 11:13

rogass
Messages: 200
Registered: April 2008

Senior Member

On 27 Sep., 15:18, Ben Tupper <ben.bigh...@gmail.com> wrote:
> On 9/27/10 7:48 AM, Dave Poreh wrote:
>
>
>
>
>
>> On Sep 27, 4:16 am, Ben Tupper<ben.bigh...@gmail.com> wrote:
>>> On 9/27/10 5:05 AM, Dave Poreh wrote:
>
>>>> Folks
>>>> Hi;
>>>> I read some data like this:
>>>> -1.8750000000 78.8750000000 1.317
>>>> -1.8750000000 78.6250000000 1.284
>>>> -1.8750000000 78.3750000000 1.216
>>>> -1.8750000000 78.1250000000 1.148
>>>> -1.8750000000 77.8750000000 1.080
>>>> ………………………………
>>>> And when I want to write it,
>>>> openw,1,'C.dat'
>>>> z=transpose(reform([data[0,*],data[1,*],data[2,*]],n_element s(data[2,*]),
>>>> 3))
>>>> printf,1,z
>>>> close,1
>>>> it gives me something like this:
>>>> -1.87500 0.897000 71.6250
>>>> 78.8750 9.87500 0.645000
>>>> 1.31700 70.3750 21.8750
>>>> -1.87500 1.01300 71.3750
>>>> 78.6250 9.87500 0.538000
>>>> 1.28400 70.1250 21.8750
>>>> ……….
>>>> Will you please help me out whit this?
>>>> Cheers
>>>> Dave
>
>>> Hi Dave,
>
>>> You haven't said what you expected to see, but clearly the transpose is
>>> making this come out 'funny'. Here's what I see when I simply readf
>>> from a file ("data-int.txt") and then printf the data to a file
>>> ("data-out.txt").
>
>>> Cheers,
>>> Ben
>>> { x86_64 darwin unix Mac OS X 7.1 Apr 21 2009 64 64}
>
>>> ;data-in.txt looks like the following
>
>>> ;-1.8750000000 78.8750000000 1.317
>>> ;-1.8750000000 78.6250000000 1.284
>>> ;-1.8750000000 78.3750000000 1.216
>>> ;-1.8750000000 78.1250000000 1.148
>>> ;-1.8750000000 77.8750000000 1.080
>
>>> infile = "data-in.txt"
>>> n = FILE_LINES(infile)
>>> s = FLTARR(3, n)
>>> OPENR, U, infile, /GET_LUN
>>> READF, U, s
>>> FREE_LUN, u
>
>>> outfile = "data-out.txt"
>>> OPENW,U, outfile,/GET_LUN
>>> PRINTF, U, s
>>> FREE_LUN, U
>
>>> ; data-out.txt looks like the following
>
>>> ; -1.87500 78.8750 1.31700
>>> ; -1.87500 78.6250 1.28400
>>> ; -1.87500 78.3750 1.21600
>>> ; -1.87500 78.1250 1.14800
>>> ; -1.87500 77.8750 1.08000
>
>> Thanks Ben. You r way is perfect. I don’t know why my way does not
>> working?
>> Cheers
>> Dave
>
> Hi again,
>
> I know that when I get bogged down with this kind of stuff (happens
> often*) using an tiny simple example helps - I like to use BINDGEN to
> created an ordered easy-to-read array. Below, you can see that I
> separate the reformed array (rs) from the transposed reformed array
> (trs). See how reform inserts the data into the new array in the
> original order? Note that the top row in rs is ordered 0,1,2,3,4. Does
> the rs value printed look like what you expected? Then also note that
> down the fist column the order is 0, 5, 10. When you transpose it back
> to being a 3x5 array the top row becomes 0,5,10. Thus your woes begin.
>
> IDL> s = bindgen(3,5)
> IDL> rs = reform([s[0,*],s[1,*],s[2,*]],n_elements(s[2,*]),3)
> IDL> trs = transpose(rs)
> IDL> print, s
> 0 1 2
> 3 4 5
> 6 7 8
> 9 10 11
> 12 13 14
> IDL> print, rs
> 0 1 2 3 4
> 5 6 7 8 9
> 10 11 12 13 14
> IDL> print, trs
> 0 5 10
> 1 6 11
> 2 7 12
> 3 8 13
> 4 9 14
>
> Cheers,
> Ben
>
> * Especially now that I use R a lot. It's either row- or column- major.
> I can't remember, but I know it is whatever IDL isn't.

Yes, reform exactly does what it shall do.

CR

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Re: Writing in text file [message #72693 is a reply to message #72672]

Mon, 27 September 2010 06:18

ben.bighair
Messages: 221
Registered: April 2007

Senior Member

On 9/27/10 7:48 AM, Dave Poreh wrote:
> On Sep 27, 4:16 am, Ben Tupper<ben.bigh...@gmail.com> wrote:
>> On 9/27/10 5:05 AM, Dave Poreh wrote:
>>
>>
>>
>>
>>
>>> Folks
>>> Hi;
>>> I read some data like this:
>>> -1.8750000000 78.8750000000 1.317
>>> -1.8750000000 78.6250000000 1.284
>>> -1.8750000000 78.3750000000 1.216
>>> -1.8750000000 78.1250000000 1.148
>>> -1.8750000000 77.8750000000 1.080
>>> ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ ï¿½ï¿½
>>> And when I want to write it,
>>> openw,1,'C.dat'
>>> z=transpose(reform([data[0,*],data[1,*],data[2,*]],n_element s(data[2,*]),
>>> 3))
>>> printf,1,z
>>> close,1
>>> it gives me something like this:
>>> -1.87500 0.897000 71.6250
>>> 78.8750 9.87500 0.645000
>>> 1.31700 70.3750 21.8750
>>> -1.87500 1.01300 71.3750
>>> 78.6250 9.87500 0.538000
>>> 1.28400 70.1250 21.8750
>>> ï¿½ï¿½ï¿½.
>>> Will you please help me out whit this?
>>> Cheers
>>> Dave
>>
>> Hi Dave,
>>
>> You haven't said what you expected to see, but clearly the transpose is
>> making this come out 'funny'. Here's what I see when I simply readf
>> from a file ("data-int.txt") and then printf the data to a file
>> ("data-out.txt").
>>
>> Cheers,
>> Ben
>> { x86_64 darwin unix Mac OS X 7.1 Apr 21 2009 64 64}
>>
>> ;data-in.txt looks like the following
>>
>> ;-1.8750000000 78.8750000000 1.317
>> ;-1.8750000000 78.6250000000 1.284
>> ;-1.8750000000 78.3750000000 1.216
>> ;-1.8750000000 78.1250000000 1.148
>> ;-1.8750000000 77.8750000000 1.080
>>
>> infile = "data-in.txt"
>> n = FILE_LINES(infile)
>> s = FLTARR(3, n)
>> OPENR, U, infile, /GET_LUN
>> READF, U, s
>> FREE_LUN, u
>>
>> outfile = "data-out.txt"
>> OPENW,U, outfile,/GET_LUN
>> PRINTF, U, s
>> FREE_LUN, U
>>
>> ; data-out.txt looks like the following
>>
>> ; -1.87500 78.8750 1.31700
>> ; -1.87500 78.6250 1.28400
>> ; -1.87500 78.3750 1.21600
>> ; -1.87500 78.1250 1.14800
>> ; -1.87500 77.8750 1.08000
>
> Thanks Ben. You r way is perfect. I donï¿½t know why my way does not
> working?
> Cheers
> Dave

Hi again,

I know that when I get bogged down with this kind of stuff (happens
often*) using an tiny simple example helps - I like to use BINDGEN to
created an ordered easy-to-read array. Below, you can see that I
separate the reformed array (rs) from the transposed reformed array
(trs). See how reform inserts the data into the new array in the
original order? Note that the top row in rs is ordered 0,1,2,3,4. Does
the rs value printed look like what you expected? Then also note that
down the fist column the order is 0, 5, 10. When you transpose it back
to being a 3x5 array the top row becomes 0,5,10. Thus your woes begin.

IDL> s = bindgen(3,5)
IDL> rs = reform([s[0,*],s[1,*],s[2,*]],n_elements(s[2,*]),3)
IDL> trs = transpose(rs)
IDL> print, s
0 1 2
3 4 5
6 7 8
9 10 11
12 13 14
IDL> print, rs
0 1 2 3 4
5 6 7 8 9
10 11 12 13 14
IDL> print, trs
0 5 10
1 6 11
2 7 12
3 8 13
4 9 14

Cheers,
Ben

* Especially now that I use R a lot. It's either row- or column- major.
I can't remember, but I know it is whatever IDL isn't.

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Re: Writing in text file [message #72694 is a reply to message #72693]

Mon, 27 September 2010 04:48

d.poreh
Messages: 406
Registered: October 2007

Senior Member

On Sep 27, 4:16 am, Ben Tupper <ben.bigh...@gmail.com> wrote:
> On 9/27/10 5:05 AM, Dave Poreh wrote:
>
>
>
>
>
>> Folks
>> Hi;
>> I read some data like this:
>> -1.8750000000 78.8750000000 1.317
>> -1.8750000000 78.6250000000 1.284
>> -1.8750000000 78.3750000000 1.216
>> -1.8750000000 78.1250000000 1.148
>> -1.8750000000 77.8750000000 1.080
>> ………………………………
>> And when I want to write it,
>> openw,1,'C.dat'
>> z=transpose(reform([data[0,*],data[1,*],data[2,*]],n_element s(data[2,*]),
>> 3))
>> printf,1,z
>> close,1
>> it gives me something like this:
>> -1.87500 0.897000 71.6250
>> 78.8750 9.87500 0.645000
>> 1.31700 70.3750 21.8750
>> -1.87500 1.01300 71.3750
>> 78.6250 9.87500 0.538000
>> 1.28400 70.1250 21.8750
>> ……….
>> Will you please help me out whit this?
>> Cheers
>> Dave
>
> Hi Dave,
>
> You haven't said what you expected to see, but clearly the transpose is
> making this come out 'funny'. Here's what I see when I simply readf
> from a file ("data-int.txt") and then printf the data to a file
> ("data-out.txt").
>
> Cheers,
> Ben
> { x86_64 darwin unix Mac OS X 7.1 Apr 21 2009 64 64}
>
> ;data-in.txt looks like the following
>
> ;-1.8750000000 78.8750000000 1.317
> ;-1.8750000000 78.6250000000 1.284
> ;-1.8750000000 78.3750000000 1.216
> ;-1.8750000000 78.1250000000 1.148
> ;-1.8750000000 77.8750000000 1.080
>
> infile = "data-in.txt"
> n = FILE_LINES(infile)
> s = FLTARR(3, n)
> OPENR, U, infile, /GET_LUN
> READF, U, s
> FREE_LUN, u
>
> outfile = "data-out.txt"
> OPENW,U, outfile,/GET_LUN
> PRINTF, U, s
> FREE_LUN, U
>
> ; data-out.txt looks like the following
>
> ; -1.87500 78.8750 1.31700
> ; -1.87500 78.6250 1.28400
> ; -1.87500 78.3750 1.21600
> ; -1.87500 78.1250 1.14800
> ; -1.87500 77.8750 1.08000

Thanks Ben. You r way is perfect. I don’t know why my way does not
working?
Cheers
Dave

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Re: Writing in text file [message #72695 is a reply to message #72694]

Mon, 27 September 2010 04:16

ben.bighair
Messages: 221
Registered: April 2007

Senior Member

On 9/27/10 5:05 AM, Dave Poreh wrote:
> Folks
> Hi;
> I read some data like this:
> -1.8750000000 78.8750000000 1.317
> -1.8750000000 78.6250000000 1.284
> -1.8750000000 78.3750000000 1.216
> -1.8750000000 78.1250000000 1.148
> -1.8750000000 77.8750000000 1.080
> ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ ï¿½ï¿½
> And when I want to write it,
> openw,1,'C.dat'
> z=transpose(reform([data[0,*],data[1,*],data[2,*]],n_element s(data[2,*]),
> 3))
> printf,1,z
> close,1
> it gives me something like this:
> -1.87500 0.897000 71.6250
> 78.8750 9.87500 0.645000
> 1.31700 70.3750 21.8750
> -1.87500 1.01300 71.3750
> 78.6250 9.87500 0.538000
> 1.28400 70.1250 21.8750
> ï¿½ï¿½ï¿½.
> Will you please help me out whit this?
> Cheers
> Dave

Hi Dave,

You haven't said what you expected to see, but clearly the transpose is
making this come out 'funny'. Here's what I see when I simply readf
from a file ("data-int.txt") and then printf the data to a file
("data-out.txt").

Cheers,
Ben
{ x86_64 darwin unix Mac OS X 7.1 Apr 21 2009 64 64}

;data-in.txt looks like the following

;-1.8750000000 78.8750000000 1.317
;-1.8750000000 78.6250000000 1.284
;-1.8750000000 78.3750000000 1.216
;-1.8750000000 78.1250000000 1.148
;-1.8750000000 77.8750000000 1.080

infile = "data-in.txt"
n = FILE_LINES(infile)
s = FLTARR(3, n)
OPENR, U, infile, /GET_LUN
READF, U, s
FREE_LUN, u

outfile = "data-out.txt"
OPENW,U, outfile,/GET_LUN
PRINTF, U, s
FREE_LUN, U

; data-out.txt looks like the following

; -1.87500 78.8750 1.31700
; -1.87500 78.6250 1.28400
; -1.87500 78.3750 1.21600
; -1.87500 78.1250 1.14800
; -1.87500 77.8750 1.08000

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