diff --git a/src/index.js b/src/index.js
index 418995d..760c8e1 100644
--- a/src/index.js
+++ b/src/index.js
@@ -54,8 +54,7 @@ export { mat2graph } from './mat2graph';
 export { meantranspose, meancolumns } from './mean';
 export { optimal_leaf_order } from './optimal_leaf_order';
 export { order } from './order';
-//export {
-//} from '';
+export { pca1d, pca_order } from './pca_order';
 //export {
 //} from '';
 //export {
diff --git a/src/pca_order.js b/src/pca_order.js
index 5e962a1..3f652b2 100644
--- a/src/pca_order.js
+++ b/src/pca_order.js
@@ -22,7 +22,7 @@ function center(v) {
 
 
 // See http://en.wikipedia.org/wiki/Power_iteration
-reorder.pca1d = function(v, eps) {
+export function pca1d(v, eps) {
     var n = v.length;
 
     if (v.length === 0) return null;
@@ -32,6 +32,6 @@ reorder.pca1d = function(v, eps) {
     return reorder.poweriteration(cov, eps);
 };
 
-reorder.pca_order = function(v, eps) {
+export function pca_order(v, eps) {
     return reorder.sort_order(reorder.pca1d(v, eps));
 };