diff --git a/README.md b/README.md
index 2c53312..327f0db 100644
--- a/README.md
+++ b/README.md
@@ -11,12 +11,12 @@ You should be able to install from PyPI:
 pip install geosketch
 ```
 
-**For an example of usage of `geosketch` in R using the [`reticulate`](https://rstudio.github.io/reticulate/) library, see  [`example.R`](example.R). WARNING: The indices returned by `geosketch` are 0-indexed, but R uses 1 indexing.**
-
 ## API example usage
 
 **Parameter documentation for the geometric sketching `gs()` function is in the source code at the top of [`geosketch/sketch.py`](geosketch/sketch.py).**
 
+**For an example of usage of `geosketch` in R using the [`reticulate`](https://rstudio.github.io/reticulate/) library, see  [`example.R`](example.R). WARNING: The indices returned by `geosketch` are 0-indexed, but R uses 1-indexing, so the `one_indexed` parameter should be set to `TRUE` when called from R.**
+
 Here is example usage of `geosketch` in Python. First, put your data set into a matrix:
 ```
 X = [ sparse or dense matrix, samples in rows, features in columns ]
diff --git a/example.R b/example.R
index cc49988..78616d5 100644
--- a/example.R
+++ b/example.R
@@ -1,6 +1,6 @@
 # WARNING: Sketch indices returned by geosketch are 0-indexed but R
-# uses 1-indexing; indices should be shifted by 1 for any downstream
-# analysis!
+# uses 1-indexing; indices should be shifted by 1 by setting
+# `one_indexed = TRUE` for any downstream analysis.
 
 library(reticulate)
 library(rsvd)
@@ -16,5 +16,5 @@ X.pcs <- s$u %*% diag(s$d)
 
 # Sketch 10% of data.
 sketch.size <- as.integer(100)
-sketch.indices <- geosketch$gs(X.pcs, sketch.size)
+sketch.indices <- geosketch$gs(X.pcs, sketch.size, one_indexed = TRUE)
 print(sketch.indices)
diff --git a/geosketch/__init__.py b/geosketch/__init__.py
index 49d4b60..c0e72a0 100644
--- a/geosketch/__init__.py
+++ b/geosketch/__init__.py
@@ -1 +1,3 @@
 from .sketch import *
+
+__version__ = '1.1'
diff --git a/setup.py b/setup.py
index baad963..647f446 100644
--- a/setup.py
+++ b/setup.py
@@ -2,10 +2,10 @@
 
 setup(
     name='geosketch',
-    version='1.0',
+    version='1.1',
     description='Geometry-preserving random sampling',
     url='https://github.com/brianhie/geosketch',
-    download_url='https://github.com/brianhie/geosketch/archive/v1.0.tar.gz',
+    download_url='https://github.com/brianhie/geosketch/archive/v1.1.tar.gz',
     packages=find_packages(exclude=['bin', 'conf', 'data', 'target', 'R']),
     install_requires=[
         'fbpca>=1.0',