must use different conversion to const char* to avoid garbage output
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@ -90,7 +90,7 @@ public:
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int get_index() const { return index; };
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int get_count() const { return series->count(); }
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const char *get_title() const { return series->name().toLocal8Bit(); }
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const char *get_title() const { return series->name().toStdString().c_str(); }
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double get_step(int index) const { return (index < 0) ? 0.0 : series->at(index).x(); }
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double get_data(int index) const { return (index < 0) ? 0.0 : series->at(index).y(); }
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