Choropleth with Michigan

On May 21, 2016, at 8:31 PM, seanmylaw@gmail.com wrote:

I am reproducing the choropleth example here:

Bokeh Docs

However, being from Michigan, I noticed that:

1) The entire upper peninsula (U.P.) is missing
2) Michigan, which is know to be shaped like a mitten, is completely mis-shapened
3) The great lakes appear to be missing

When I compare it to Google maps, I can see that the parts of the great lakes on the American side are essentially combined with its nearest county. So it ends up looking like a blob.

Is there a way to fix/remedy this?

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On Friday, June 3, 2016 at 9:11:28 PM UTC-7, Bryan Van de ven wrote:

Hi Sean,

There’s a couple of issues I imagine. First is that we don’t yet have “patches with holes” which is an open feature request. Sarah has done some initial work but it’s also a bit fiddly and complicated. We might only add that capability for a GeeJSON renderer, and keep the existing Patches renderer fairly simple. Regarding the data, I would describe it as being of dubious provenance. I obtained it from a freely published Google Sheet. I’d have to track down the original reference, but I already know it has some problems (the gulf coast of Texas is a straight line, e.g.) If you know of a publicly available better set of data for US Geo boundaries, please let us know and we can try to integrate it.

Bryan

On May 21, 2016, at 8:31 PM, sean...@gmail.com wrote:

I am reproducing the choropleth example here:

http://bokeh.pydata.org/en/0.11.1/docs/gallery/choropleth.html

However, being from Michigan, I noticed that:

1. The entire upper peninsula (U.P.) is missing

2. Michigan, which is know to be shaped like a mitten, is completely mis-shapened

3. The great lakes appear to be missing

When I compare it to Google maps, I can see that the parts of the great lakes on the American side are essentially combined with its nearest county. So it ends up looking like a blob.

Is there a way to fix/remedy this?

–
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