On Fri, 23 Oct 2020, ri...@triton.net wrote:
Thank you very much, I kind of thought the problem was something like that.
The new code now generates two errors. They are
1. Line-> gretl_set_path_by_name("gnuplot", "/usr/bin/gnuplot");
generates error: ‘gretl_set_path_by_name’ was not declared in this scope
Ah, I was forgetting that gretl_set_path_by_name is a fairly recent
addition to the API: it can be found in gretl 2020c and higher.
2. Line -> opt |= OPT_U; /* add --plot=<whatever> */
generates error: invalid conversion from ‘int’ to ‘gretlopt’ [-fpermissive]
Hmm, what's the compiler? OPT_U is a member of the gretlopt enum in
libgretl.h so I'm surprised by this objection.
Also for-> opt |= OPT_U; /* add --plot=<whatever> */
what does OPT_U and all the other OPT_.... mean/stand for. Like is
OPT_U=corrgram plot, and OPT_R= Time series plot, or am I just
missing how that entire line of code works?
The OPT_* identifiers stand for option flags -- see libgretl.h, and
options.c for their translation to strings such as "--plot", for
various commands. Specific to this case, in the command-form we
might have
corrgm <varname> --plot=display # show plot on-screen
corrgm <varname> --plot=corrgm.pdf # produce named PDF file
In this case OPT_R is an internal option, meaning that the series in
question is the residual from estimation: this only affects some of
the strings shown in the output.
Allin
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