| Re: Writing a modified .txt file issue [message #85374 is a reply to message #85370] |
Mon, 29 July 2013 13:55   |
wlandsman
Messages: 743
Registered: June 2000
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Senior Member |
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I haven't really tested this, but now STRSPLIT() can operate on a 2-d array and return the values in a list. So you can eliminate loops entirely
mylist = strsplit(word,' ',/extract)
myarr = mylist.toarray()
data.date = myarr[*,0]
data.time = myarr[*,1]
data.latitude = double( myarr[*,2])
data.longitude = double( myarr[*,3])
On Monday, July 29, 2013 4:03:02 PM UTC-4, Phillip Bitzer wrote:
> FOR i=0L, nLines-1 DO BEGIN
>
> this_row = STRSPLIT(word[i], ' ', /extract)
>
> data[i].date = this_row[0]
>
> data[i].time = this_row[1]
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> data[i].latitude = DOUBLE(this_row[2])
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> data[i].longitude = DOUBLE(this_row[3])
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> ....
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> ENDFOR
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>
>
> I have been looking for a better/more efficient way of doing this. Can't seem to find a good way, but maybe Coyote has cooked up something :-) ReadCol works about as quickly as my code.
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>
>
> I should mention that there are several string columns mixed up amongst the numeric columns. Yuck.
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>
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> For the output, Hakan, I would say those numbers *do* match, although they might be formatted differently. You'll want to use the FORMAT keyword, however you're writing the file back out if you want to match the numbers/decimal places/etc.
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>
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> A simple example:
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> IDL> a = 13.2
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> IDL> PRINT, a
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> 13.2000
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> IDL> PRINT, a, format='(F5.2)'
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> 13.20
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> IDL> PRINT, a, format='(F4.1)'
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> 13.2
>
>
>
> You would do something similar using PRINTF.
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