i want to write a floating array (tab=fltarr(5,1000) ) in a ascii-file.

I tried

openw, 1,'Data.txt', width=500
printf, 1,tab
close, 1

but the Colums aren't seperated - especially when the numbers are
nagative, then it looks like:

...00000-2.11
...99920 3.222

Now, i wanted to insert a separator like "tab" or ",", because i need
to read the file with excel/origin (without the seperator the file
isn't recognized as a ascii-file - even a "space" would do)

Is there a solution for my problem ? (the easier the better :) )

Greetings

use the FORMAT keyword with printf, e.g.

printf, 1, tab, format = '(5f12.3)'  

Cheers,

thanks for the tip, but unfortunately i didn't work so far (still
working on it ).

Isn't there a way via "format" ?

printf, 1, format='?????', tab

greetings,

Have a look at this: <http://www.dfanning.com/tips/csv_file.html>.

Cheers,
Timm

Timm Weitkamp, ESRF, Grenoble, France

should give you, for example 5 columns of floating point with a
deliberate space either side of the number, a '+' before positive and a
'-' before negative figures, each figure having 12 total digit spaces
and 3 places of decimals with the leading figures padded by zeros.

Look up "format codes" in help for some other tweaks.

Greets,