[Octave-bug-tracker] [bug #60873] Feature request: combine system and dlmread if viable

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?60873>

                 Summary: Feature request: combine system and dlmread if
viable
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 02 Jul 2021 01:41:52 AM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 6.2.0
         Discussion Lock: Any
        Operating System: Any

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Details:

I find myself using this pattern a lot:


% create a file called file.ext here and call an external program on it
system ("externalprogram file.ext >out");
output = dlmread ("out");


It's not currently possible but it would be desirable to avoid the file
system. It doesn't seem possible with

[~,output] = system ("externalprogram file.ext");
output = str2num (output);


which only gives an empty output because the lines are uneven lengths and
str2num doesn't pad it to zeros.

Maybe an extra flag to system to indicate that the output should have dlmread
or other specified function called on it without the overhead of going through
the file system? Is the above reasonable and viable, or will it be too much
effort?







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