diff cpack/dml/examples/visuals.pl @ 0:718306e29690 tip

commiting public release

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cpack/dml/examples/visuals.pl	Tue Feb 09 21:05:06 2016 +0100
@@ -0,0 +1,62 @@
+:- use_module(library(mlserver)).
+:- use_module(library(semweb/rdf_label)).
+:- use_module(components(matlab)).
+:- use_module(components(audio)).
+:- use_module(components(score)).
+:- use_rendering(matlab,[size(12,8),cache(true)]).
+:- use_rendering(html).
+
+%:- include(search).
+
+/** <examples>
+ ?- test_plot(X).
+ ?- test_html(X).
+ ?- X=html(\figure(??bar(rand(10,1)),5,3)), Y=fig(plot(1:10),5,3), hold.
+ ?- ml_fig(??bar(1:10),5,3), ml_fig(??plot(sin(0:0.05:12)),5,3).
+ ?- finder_player(title(brandenburg),Player).
+ ?- finder_player(title('prelude and fugue')/\composer(bach),Player).
+ ?- R::title(prelude)/\title(cello)/\humdrum, 
+ 	X=html(\score(R,150)),
+    Y=html(\score_audio_player(R)).
+          
+*/
+
+bar(Opts,X-Y,Fig) :- decorate(fig(bar(X,Y),15,5),Opts,Fig).
+plot(Opts,X-Y,Fig) :- decorate(fig(plot(X,Y),15,5),Opts,Fig).
+                                             
+ml_fig(Cmd,W,H) :- write_html(\figure(Cmd,W,H)).
+
+decorate(fig(Cmd,W,H),Opts,fig(Cmd2,W,H)) :-
+    (   option(labels(XL,YL),Opts)
+    ->	Cmd1 = (Cmd;xlabel(q(XL));ylabel(q(YL)))
+    ;   Cmd1 = Cmd
+    ),
+    (   option(title(T),Opts)
+    ->	Cmd2 = (Cmd1;title(q(T)))  
+    ;   Cmd2 = Cmd1
+    ).
+
+
+/* Note that there is a subtle problem which affects
+ * the use of the figure//3 HTML component: the first argument
+ * is a module-qualified goal, and gets tagged with the name
+ * of the module created to run the current pengine query.
+ * The component results in an HTML IMAGE element whos
+ * URL encodes the goal and its module. If the pengine query
+ * has terminated by the time the image URL is dereferenced,
+ * the call fails. Thus, to make this work with write_html/1
+ * you need either a delay (eg sleep(3)) after the call, to allow
+ * the image to render before the query terminates, or you need
+ * to introduce some nondeterminism so that the query remains 
+ * active. To make it work with html term rendering, only the 
+ * non-determinism method will work. To do this, you can add the
+ * following hold as a final goal - it succeeds but leaves a choice point.
+ */
+hold :- true; fail.
+
+test_plot(fig(plot(X,X.^2))) :- X= -1:0.01:1.
+
+test_html(html(span([b(hello),' ',i(world)]))).
+test_html(html(\figure(??imagesc(magic(5)),3,3))).
+test_html(_) :- fail.
+