# Issue related to .groupby

**URL:** <https://discourse.holoviz.org/t/issue-related-to-groupby/310>\
**Category:** GeoViews\
**Created:** [March 13, 2020, 3:09pm UTC](https://discourse.holoviz.org/t/issue-related-to-groupby/310 "2020-03-13T15:09:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Bellador](https://discourse.holoviz.org/letter_avatar_proxy/v4/letter/b/c5a1d2/32.png) [@Bellador](https://discourse.holoviz.org/u/Bellador)\
**Post date:** [March 13, 2020, 3:09pm UTC](https://discourse.holoviz.org/t/issue-related-to-groupby/310/1 "2020-03-13T15:09:52Z")

</div>

I am trying to create a simple map with Geoviews which allows me to select between different values of a dataframe column such as the following example taken from [here](https://www.data-dive.com/interactive-maps-made-easy-geoviews).

 ![image](https://discourse.holoviz.org/uploads/default/original/1X/d7f64573fe575723391b1b5ddfa3a7ac1c51592c.jpeg)

I tried to reproduce the same example on this simple dataset:

```auto
id;lat;lng;name
0;47.397773;8.546508;peter
1;47.398487;8.544288;frank
2;47.397013;8.543065;elsa

```

which I read in with pandas like so:  
`df = pd.read_csv('test.csv', delimiter=';')`

then create the GeoViews interactive map with a Bokeh backend:

```auto
layer = gv.Points(df, kdims=['lng', 'lat'], vdims=['name']).groupby('name')
layer.opts(size=10, height=1200, width=1200, alpha=0.5, tools=['hover']) * gts.Wikipedia

```

the output is not the desired one but rather an empty drop down menu with no map at all (unfortunately I cannot post another image since I’m a new user). But no error.  
If I remove the `.groupby('name')` the map appears as expected but obviously without any dropdown menu to select different map layers that show point of different name.

I am on a Windows 10 machine using Jupyter Notebook and Python 3.7.3 with anaconda and among others the following library versions:

```auto
holoviews 1.12.7
geoviews 1.6.6
pandas 0.25.1

```

If anybody could lead me into the right direction of what I’m doing wrong that would be awesome 🙂

EDIT: Was able to solve the problem by updating my conda environment and with it the geoviews and holoview library to 1.6.6, 1.12.7 (so no change there - wasn’t the issue) and then manually setting `bokeh` to version 1.4.0 (apparently an issue with v2.0.0 according to this [thread](https://github.com/holoviz/holoviews/issues/2012)). Hope that helps anyone else

---

<div class="post-metadata">

**Author:** ![philippjfr](https://discourse.holoviz.org/user_avatar/discourse.holoviz.org/philippjfr/32/7_2.png) [@philippjfr](https://discourse.holoviz.org/u/philippjfr)\
**Post date:** [March 21, 2020, 12:47am UTC](https://discourse.holoviz.org/t/issue-related-to-groupby/310/2 "2020-03-21T00:47:01Z")

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Thanks for following up and posting how you fixed it!