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How to add number near point of scatter plot?
e.g. I have two point 1 is (1,3) and point 2 (2,4), how can I add 1
and 2 to scatter plot near these two points? Thanks!
import matplotlib.pyplot as plt
x = [1,2]
y = [3,4]
plt.scatter(x, y)
plt.show()

On 04/04/2013 19:00, Mark Lawrence wrote:
> Sadly no :( I want the day of the month that I'm processing *OR* the
> last day. The worst case for this is obviously the 31st of each month.
> The rrule code I've given provides exactly that. When transferred to
> mpl that doesn't work.
Best seen by changing the lines I gave originally to this.
start = datetime.date(2013, 4, 5)
until = datetime.date(2014, 4, 5)
dates = rrule(MONTHLY, bymonthday=(5, -1), bysetpos=1, until=until)
rrule output as follows.
2013年04月05日 10:15:24
2013年05月05日 10:15:24
2013年06月05日 10:15:24
2013年07月05日 10:15:24
2013年08月05日 10:15:24
2013年09月05日 10:15:24
2013年10月05日 10:15:24
2013年11月05日 10:15:24
2013年12月05日 10:15:24
2014年01月05日 10:15:24
2014年02月05日 10:15:24
2014年03月05日 10:15:24
Plot attached.
>
> On 04/04/2013 17:31, Phil Elson wrote:
>> Hi Mark,
>>
>> Thanks for persevering :-)
>>
>> What is it you want to achieve? Is it that you just want the last day of
>> each month as the located value?
>>
>> Changing your locator to:
>>
>> ax.xaxis.set_major_locator(MonthLocator(bymonthday = -1))
>>
>> Seems to do the trick for me (I've never looked at the mpl date magic,
>> so I can give no guarantees).
>>
>> HTH,
>>
>>
>> On 4 April 2013 17:18, Mark Lawrence
>> <bre...@ya...
>> <mailto:bre...@ya...>> wrote:
>>
>> On 01/04/2013 14:48, Mark Lawrence wrote:
>> > On 29/03/2013 15:49, Mark Lawrence wrote:
>> >> Hi all,
>> >>
>> >> From http://labix.org/python-dateutil
>> >>
>> >> "To generate a rrule for the use case of "a date on the
>> specified day of
>> >> the month, unless it is beyond the end of month, in which case
>> it will
>> >> be the last day of the month" use the following:
>> >>
>> >> rrule(MONTHLY, bymonthday=(some_day, -1), bysetpos=1)
>> >>
>> >> This will generate a value for every calendar month regardless
>> of the
>> >> day of the month it is started from."
>> >>
>> >> Using bymonthday with MonthLocator gives ticks on the day given
>> and the
>> >> last day of the month, which looks extremely ugly. Code below
>> demonstrates.
>> >>
>> >> from dateutil.rrule import *
>> >> import datetime
>> >> import matplotlib.pyplot as plt
>> >> from matplotlib.ticker import FormatStrFormatter, MultipleLocator
>> >> from matplotlib.dates import DateFormatter, MonthLocator, DayLocator
>> >>
>> >> start = datetime.date(2013, 3, 29)
>> >> until = datetime.date(2014, 3, 29)
>> >> dates = rrule(MONTHLY, bymonthday=(29, -1), bysetpos=1, until=until)
>> >> for d in dates:print(d)
>> >>
>> >> dates = [start, until]
>> >> values = [0, 1]
>> >> plt.ylabel('Balance')
>> >> plt.grid()
>> >> ax = plt.subplot(111)
>> >> plt.plot_date(dates, values, fmt = 'rx-')
>> >> ax.xaxis.set_major_locator(MonthLocator(bymonthday =
>> (dates[0].day, -1)))
>> >> ax.xaxis.set_major_formatter(DateFormatter('%d/%m/%y'))
>> >> ax.yaxis.set_major_formatter(FormatStrFormatter('£%0.2f'))
>> >> ax.yaxis.set_minor_locator(MultipleLocator(5))
>> >> plt.axis(xmin=dates[0], xmax=dates[-1])
>> >> plt.setp(plt.gca().get_xticklabels(), rotation = 45, fontsize = 10)
>> >> plt.setp(plt.gca().get_yticklabels(), fontsize = 10)
>> >> plt.show()
>> >>
>> >
>> > Seems an apt date to realise that I didn't say much :(
>> >
>> > Assuming that I'm correct would you like an issue raised on the bug
>> > tracker? If not please correct the mistake I've made, presumably in
>> > reading the docs, which I think are excellent by the way.
>> >
>>
>> Anybody?
>>
>> --
>> If you're using GoogleCrapTM please read this
>> http://wiki.python.org/moin/GoogleGroupsPython.
>>
>
>
-- 
If you're using GoogleCrapTM please read this 
http://wiki.python.org/moin/GoogleGroupsPython.
Mark Lawrence

Phil and Derek,
I just created this as the following issue
https://github.com/matplotlib/matplotlib/issues/1886
I was wrong about TkAgg having a problem. The default backend for 
Derek and me is MacOSX. Both TkAgg and QT4Agg display correctly for me.
John