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Re: How to read data with format codes? [message #70070 is a reply to message #70069]

Sat, 13 March 2010 17:19

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

The easiest way I see is not with format codes, but with read_ascii
with a template:

templ=ascii_template(file)
a=read_ascii(file,template=templ)

If you want it to be non-interactive, you can either use
ascii_template once, then save the resulting template, or generate one
yourself, as in:

template={version:1.0,datastart:0L,delimiter:byte('|'),missi ngvalue:!
values.d_nan,$
commentsymbol:'',fieldcount:[4L],fieldtypes:[0L,5L,5L,5L],$
fieldnames:['FIELD1','FIELD2','FIELD3','FIELD4'],$
fieldlocations:[0L,0L,0L,0L],fieldgroups:[0L,1L,2L,3L]}

The most relevant here being delimiter, fieldcount and fieldtype.

If you had commas instead of "|" separating the columns, none of that
would be needed, you would be able to just use read_csv.

Another way would be to read the file into a string array, then use
strsplit to separate each line at the "|":

nlines=file_lines(file)
a=strarr(nlines)
openr,unit,file,/get_lun
readf,unit,a
free_lun,unit
a=strtrim(a,2)
b=dblarr(3,nlines)
for i=0,nlines-1 do b[*,i]=strsplit(a[i],'|',/extract)

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[Message index]

		Re: How to read data with format codes? By: penteado on Sat, 13 March 2010 17:45
		Re: How to read data with format codes? By: Adam Solomon on Sat, 13 March 2010 17:20
		Re: How to read data with format codes? By: penteado on Sat, 13 March 2010 17:19
		Re: How to read data with format codes? By: David Fanning on Sat, 13 March 2010 17:04
		Re: How to read data with format codes? By: Adam Solomon on Sat, 13 March 2010 16:39
		Re: How to read data with format codes? By: Kenneth P. Bowman on Sun, 14 March 2010 10:23
		Re: How to read data with format codes? By: David Fanning on Sat, 13 March 2010 18:10
		Re: How to read data with format codes? By: R.G.Stockwell on Sat, 13 March 2010 18:03

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