StreamingStringFeatures libshogun example.

shogun-toolbox · Aug 26, 2011 · 65a020c · 65a020c
1 parent 66c4ffd
commit 65a020c
Showing 1 changed file with 46 additions and 0 deletions.
diff --git a/examples/undocumented/libshogun/streaming_stringfeatures.cpp b/examples/undocumented/libshogun/streaming_stringfeatures.cpp
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+#include <shogun/io/StreamingAsciiFile.h>
+#include <shogun/features/StreamingStringFeatures.h>
+
+using namespace shogun;
+
+void display_vector(const SGString<char> &vec)
+{
+	printf("\nNew Vector\n------------------\n");
+	printf("Length=%d.\n", vec.slen);
+	for (int32_t i=0; i<vec.slen; i++)
+	{
+		printf("%c", vec.string[i]);
+	}
+	printf("\n");
+}
+
+int main(int argc, char **argv)
+{
+	init_shogun_with_defaults();
+
+	CStreamingAsciiFile* file = new CStreamingAsciiFile("../data/fm_train_dna.dat");
+
+	CStreamingStringFeatures<char>* feat = new CStreamingStringFeatures<char>(file, false, 1024);
+	feat->use_alphabet(DNA);
+
+	feat->start_parser();
+	while (feat->get_next_example())
+	{
+		SGString<char> vec = feat->get_vector();
+		display_vector(vec);
+		feat->release_example();
+	}
+	feat->end_parser();
+
+	CAlphabet* alpha = feat->get_alphabet();
+
+	printf("\nThe histogram is:\n");
+	alpha->print_histogram();
+
+	SG_UNREF(alpha);
+	SG_UNREF(feat);
+	SG_UNREF(file);
+
+	exit_shogun();
+	return 0;
+}