CODEWITHSUNDEEP
idl-programming-language
Hui
Hui

Reputation: 1

How to write more than 7 columns into a csv file by IDL?

I have been tried to write 8 columns in a CSV file by using IDL, but seems the maximum columns that I can wrote is 7?

IDL> write_csv,ffout,date_time,tmin_tmax,precp,wind,rh,sun_hrs,glb_rad,net_rad
WRITE_CSV: Incorrect number of arguments

Upvotes: 0

Views: 1425

Answers (2)

jitter
jitter

Reputation: 387

As long as your input arrays are one-dimensional you can just concatenate them (and do an additional transpose):

a = FINDGEN(3)
b = TRANSPOSE([ [a], [a], [a], [a], [a], [a], [a], [a], [a], [a] ])
WRITE_CSV, 'test.csv', b

Upvotes: 0

mgalloy
mgalloy

Reputation: 2386

The documentation for WRITE_CSV indicates you can write up to 8 columns, which works for me:

x = findgen(10)
write_csv, 'test.csv', x, x, x, x, x, x, x, x

In any case, if you need to write more columns, it is easy enough to use PRINTF to output each line:

for i = 0L, n_lines - 1L do begin
  printf, lun, a[i], b[i], c[i], d[i], e[i], f[i], g[i], h[i], $
          format='(%"%f, %f, %f, %f, %f, %f, %f, %f")'
endfor

You can change the format codes as appropriate, or use the Fortran-style format codes as you prefer.

Upvotes: 1

Related Questions