diff --git a/stim/visualization/fiber.h b/stim/visualization/fiber.h
index 337b0a4..0bd67a8 100644
--- a/stim/visualization/fiber.h
+++ b/stim/visualization/fiber.h
@@ -274,6 +274,39 @@ public:
 	T radius(int idx){
 		return r[idx];
 	}
+	/// get index of a node on a fiber 
+	// by matching the node on fiber to already set vertices (both strings)
+	// used in obj file conversion
+	int 
+	getIndexes(std::string* input, std::string searched, int sizeV) 
+	{
+		int result = 0;
+		for (int i = 0; i < sizeV; i++)
+		{
+			if (input[i] == searched) 
+			{
+				result = i + 1;
+			}
+		}
+		return result;
+    }
+		// strObj returns a string of fiber indices corresponding to vectors of positions in the fiber including intermediate nodes
+	std::string
+	strObj(std::string* strArray, int sizeV)
+	{
+		std::stringstream ss;
+		std::stringstream oss;
+		for(unsigned int i = 0; i < N; i++)
+		{
+			ss.str(std::string());
+			for(unsigned int d = 0; d < 3; d++)
+			{
+				ss<<c[i][d];
+			}
+			oss<<getIndexes(strArray, ss.str(), sizeV)<<" ";
+		}
+		return oss.str();
+	}
 
 	/// Return the point on the fiber closest to q
 	/// @param q is the query point used to locate the nearest point on the fiber centerline
--
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