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[python #DBA-624487]: metpy station plot question

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  • Subject: [python #DBA-624487]: metpy station plot question
  • Date: Mon, 15 Oct 2018 15:39:39 -0600
Hi!

That's interesting--apparently StationPlot doesn't like that. Could you open an 
issue at:

https://github.com/Unidata/MetPy/issues/new

And include sample data and complete (and preferably minimal) code that 
generates the error? I'd be interested in seeing what we can do to make MetPy 
support this out of the box.

For now, I think your best bet to work around this shortcoming is to use 
matplotlib's `date2num` function to manually convert the dates to numbers for 
plotting (which is what matplotlib does under the hood normally for you):

https://matplotlib.org/api/dates_api.html
https://matplotlib.org/gallery/text_labels_and_annotations/date.html#sphx-glr-gallery-text-labels-and-annotations-date-py

Ryan

> Hi there!
> I’m in the CSU atmos science department.  You gave a great seminar last 
> summer and really appreciate your time.
> I’ve got a quick question for you…
> I’m trying to make a ‘meteogram’ like plot.  I want to use a horizontal axis 
> to plot sky condition at a single station over time.  My x-axis uses a date 
> format.
> Metpy seems to have a problem with this.  For example,
> 
> y=  np.ones(len(df2.index))
> x= np.arange(0,31,1)
> stationplot = StationPlot(ax, x , y, fontsize=12)
> stationplot.plot_symbol('C', df2['Sky'].astype(int) , sky_cover)
> 
> works great.
> 
> BUT, if make the x-axis
> x= df2.index   # a date,
> 
> it plots fine but gives an error message, ‘invalid type promotion'
> 
> [cid:B6B4A47D-6C45-4234-984F-F05CD8D32F0B]
> 
> Does ‘stationplot’ not like dates as x-axis values?  Is there a workaround?

Ticket Details
===================
Ticket ID: DBA-624487
Department: Support Python
Priority: Low
Status: Open
===================
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