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Guile Blocks has two language procedures for Gnuplot. One is
gnuplot-raw
, in which no special formatting is added by Guile Blocks
and the code
field is sent unmodified by Gnuplot (beyond normal
pipeline/combination rules).
Alternatively, one can use the gnuplot
language procedure. Both
gnuplot-raw
and gnuplot
take an output
keyword argument to set
the block result field. gnuplot
takes two additional keyword
arguments: term
and terminate-data?
. term
is used as a shorthand
to set the output terminal type. For example:
(make-block* #:language (gnuplot #:output "foo.png" #:term "png") #:code "...") ;; Results in the following Gnuplot script: ;; ;; set term png ;; set output foo.png ;; ...
terminate-data?
appends an e
character to the end of the script.
This is useful when Gnuplot is run in a pipeline with another block
providing input. Instead of fetching data from a temporary file, the
data can be spliced into the Gnuplot script. When Gnuplot plots the
special character '-'
it will read the data from the script, only
stopping when encountering an e
character.
(make-block* #:language (gnuplot #:output "foo.png" #:term "png" #:terminate-data? #t) #:code " plot '-' with lines %code%") ;; Results in the following Gnuplot script ;; ;; set term png ;; set output foo.png ;; plot '-' with lines ;; %code% # <- replaced with previous block's result ;; e