ENH: Add examples for Siphon and MetPy

[dopplershift]

This covers surface data and station plots, as well as getting data from
the thredds radar server and plotting using pyart.

[jjhelmus]

@dopplershift

I tested out these two notebooks on an EC2 instance and am getting the following error from the "Siphon Radar Server" notebook when executing the first cell:

from siphon.catalog import TDSCatalog
cat = TDSCatalog('http://thredds-aws.unidata.ucar.edu/thredds/radarServer/catalog.xml')
list(cat.catalog_refs)

---------------------------------------------------------------------------
HTTPError                                 Traceback (most recent call last)
<ipython-input-2-a108379447a5> in <module>()
      1 from siphon.catalog import TDSCatalog
----> 2 cat = TDSCatalog('http://thredds-aws.unidata.ucar.edu/thredds/radarServer/catalog.xml')
      3 list(cat.catalog_refs)

/home/ubuntu/miniconda3/envs/ams-workshop/lib/python3.5/site-packages/siphon/catalog.py in __init__(self, catalog_url)
     63         # get catalog.xml file
     64         resp = session.get(self.catalog_url)
---> 65         resp.raise_for_status()
     66 
     67         # If we were given an HTML link, warn about it and try to fix to xml

/home/ubuntu/miniconda3/envs/ams-workshop/lib/python3.5/site-packages/requests/models.py in raise_for_status(self)
    891 
    892         if http_error_msg:
--> 893             raise HTTPError(http_error_msg, response=self)
    894 
    895     def close(self):

HTTPError: 403 Client Error: Forbidden for url: http://thredds-aws.unidata.ucar.edu/thredds/radarServer/catalog.xml

Is access to the thredds-aws catalog locked to a set of IPs or domains?

[dopplershift]

It is currently--I'll turn it off for the workshop, or possibly stand up a new one just for the workshop.

[scollis]

Cool.. Could you open it up to *.anl.gov so I can experiment? I wonder if I log into Eduroam does it work?

…

On 1/20/17 11:21 AM, Ryan May wrote: It is currently--I'll turn it off for the workshop, or possibly stand up a new one just for the workshop. — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#21 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAyYB68r-7fR2l5b97LeOWBuatZsbyBCks5rUO0lgaJpZM4LoyiN>.

[dopplershift]

I wish it were as easy as a whitelist. sigh Stupid Tomcat.

I'll have something this morning or just after lunch. In the meanwhile, for small experiments, just point to http://thredds.ucar.edu/thredds/radarServer

[scollis]

Thanks.. actually if it is just for the radarserver it is no big deal.

…

On 1/20/17 11:34 AM, Ryan May wrote: I /wish/ it were as easy as a whitelist. /sigh/ Stupid Tomcat. I'll have something this morning or just after lunch. In the meanwhile, for small experiments, just point to http://thredds.ucar.edu/thredds/radarServer — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#21 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAyYB-PM_6LQUOCWJ0CvIWSB5xxzyBxlks5rUPAigaJpZM4LoyiN>.

[dopplershift]

It's just the THREDDS instance we run in AWS, since we're on the hook for the bandwidth bill. The s3 bucket itself should be completely wide open.

[scollis]

Exactly.. for the final demo I will use Boto.. S3-> Eastcoast AWS is free

…

On 1/20/17 11:40 AM, Ryan May wrote: It's just the THREDDS instance we run in AWS, since we're on the hook for the bandwidth bill. The s3 bucket itself should be completely wide open. — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#21 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAyYB8GMVnOi2-iIbGuKFVO-TTbF0SX2ks5rUPGEgaJpZM4LoyiN>.

[dopplershift]

@scollis If you want to try, there's a new server up at:

http://52.90.147.218/thredds/catalog.html

At some point, I'll update the notebook to point to:

http://52.90.147.218/thredds/radarServer/catalog.xml

[scollis]

Thanks! BTW have you got a satellite example handy?

…

On 1/20/17 6:04 PM, Ryan May wrote: @scollis <https://github.com/scollis> If you want to try, there's a new server up at: http://52.90.147.218/thredds/catalog.html At some point, I'll update the notebook to point to: http://52.90.147.218/thredds/radarServer/catalog.xml — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#21 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAyYB0mtoSNDaWP63o62tGh6pOSCUJYcks5rUUuJgaJpZM4LoyiN>.

[dopplershift]

Yeah:

https://github.com/Unidata/unidata-python-workshop/blob/master/notebooks/GINI%20Satellite%20with%20MetPy%20and%20Siphon.ipynb

Somehow, I think you're working on this same problem I did in Unidata/MetPy#243

[scollis]

Epic :)

…

On 1/20/17 6:10 PM, Ryan May wrote: Yeah: https://github.com/Unidata/unidata-python-workshop/blob/master/notebooks/GINI%20Satellite%20with%20MetPy%20and%20Siphon.ipynb Somehow, I think you're working on this same problem I did in Unidata/MetPy#243 <Unidata/MetPy#243> image <https://cloud.githubusercontent.com/assets/221526/22169692/4a7e268e-df33-11e6-9aea-3b77ce4aa48b.png> — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#21 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAyYB7FzcirDi9ne-39mD0Zb9QGv6MjZks5rUU0AgaJpZM4LoyiN>.

[dopplershift]

While the map is cool, it refers to the type of issue in the Agile methodology. 😁