Sankey visual analysis

[Vivien Chen]

Hi,

I am trying to use Sankey to visually describe longitudinal patterns/flow in Stata 17. (I have Python 3.9 installed.) I tried to test with the example dataset and codes provided in help, but returned with an error message as below. Could you please provide some guidance? Thanks!


. use https://www.mjcrowther.co.uk/data/sankey_eg1

. sankey start stop freq
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'
(30 lines skipped)
(error occurred while loading sankey.ado)
r(7102);



Best,

Vivien Chen

[Maria Boutchkova]

Hi Vivien,
make sure to first install sankey as the author instructs:

net install sankey, from(https://www.mjcrowther.co.uk/code/sankey)

and then run adoupdate.

[Vivien Chen]

Maria -
Thanks! I did as you suggested, but still got the same error messages....

[Maria Boutchkova]

It seems to be some kind of dependency missing in the python install. numpy is an essential library that absolutely must be there. Perhaps a more advanced python user may suggest something or email the developer directly.

[Bjarte Aagnes]

read the Stata Blog on Stata/Python integration, especially: Stata/Python integration part 3: How to install Python packages

[Vivien Chen]

Thank you! I tried the Stata/Python integration process, and installed the python package - plotly. It seems to work now!!! Thank you very much!!!

[iris lee]

Thank you! I tried the Stata/Python integration process, and installed the python package - plotly. It seems to work now!!! Thank you very much!!!

hello！
I met the same problem with you but then a new problem comes that the website fail to link. I don't know why. Did you meet this before?
Thanks a lot!

[iris lee]

I have Python 3.9 and Stata16 installed. I put the command

sankey start end trade, colors(3 "green" 6 "red") linkcolor(lightgreen)

and there is a website opened but it faild to link.
I have trade flow data between 200 cities. Is that too much for this program?

[Bjarte Aagnes]

deleted.

[iris lee]

I have Python 3.9 and Stata16 installed. I put the command

sankey start end trade, colors(3 "green" 6 "red") linkcolor(lightgreen)

and there is a website opened but it faild to link.
I have trade flow data between 200 cities. Is that too much for this program?

Hello again,
It's strange that the code works sometimes but it still has a blank website in some cases. Maybe there can't be so much cities.