Method redo

src/backend/worksheet/WorksheetElement.cpp:680–691

	}

	virtual void redo() override {
		const auto oldIndex = m_element->m_cSystemIndex;
		m_element->m_cSystemIndex = m_index;
		if (m_element->plot())
			m_element->cSystem = dynamic_cast<const CartesianCoordinateSystem*>(m_element->plot()->coordinateSystem(m_index));
		else
			DEBUG(Q_FUNC_INFO << ", WARNING: No plot found. Failed setting csystem index.")

		m_index = oldIndex;
		m_element->retransform();
		Q_EMIT m_element->coordinateSystemIndexChanged(m_element->m_cSystemIndex);
	}

	virtual void undo() override {
		redo();