[Matplotlib-users] Scientific notation digits at left-bottom corner of figure

[Ardeal LIANG]

HI Eric,

Did you review the picture attached in my former email?
I suspect you go to the wrong direction about what I want to ask.

Best Regards,
Ardeal Liang

-----Original Message-----
From: Eric Firing [mailto:efiring at hawaii.edu]
Sent: 2017年10月28日 1:23
To: Ardeal LIANG <ardeal.liang at philips.com>; matplotlib-users at python.org
Subject: Re: [Matplotlib-users] Scientific notation digits at left-bottom corner of figure

I'm getting a different result, but on the basic point we now agree:
the ScalarFormatter is not the right tool for this.  What you need is a function that takes a number and returns the kind of string you want.

Examples:

def format_as_int(num):
     return str(int(num))

def format_float_no_sci(num):
     return "%f" % num

Eric

On 2017/10/26 10:07 PM, Ardeal LIANG wrote:
> Hi Eric,
>
> I added your code to my code:
>
> *from *matplotlib.ticker *import *ScalarFormatter
>
> fmt_no_sci = ScalarFormatter(useOffset=False)
> fmt_no_sci.set_scientific(False)
>
> /# ax.fmt_xaxis = fmt_no_sci
>
> /prow = 4
> pcol = 1
> pidx = 0
> fig = plt.figure()
> pidx += 1
> axx = fig.add_subplot(prow, pcol, pidx, ylabel=*'rawdata'*)
> axx.plot(np.abs(testdata))
>
> axx.fmt_xaxis = fmt_no_sci
>
> The *x axis value displayed at the left-bottom corner of the figure*is
> still scientific notation, but not decimal notation.
>
> Best Regards,
>
> Ardeal Liang
>
> -----Original Message-----
> From: Matplotlib-users
> [mailto:matplotlib-users-bounces+ardeal.liang=philips.com at python.org]
> On Behalf Of Eric Firing
> Sent: 2017年10月27日 16:00
> To: matplotlib-users at python.org
> Subject: Re: [Matplotlib-users] Scientific notation digits at
> left-bottom corner of figure
>
> On 2017/10/26 9:50 PM, Ardeal LIANG wrote:
>
>  > Hi,
>
>  >
>
>  > If I put the mouse on the figure, x and y axis are displayed on the
>
>  > left-bottom corner of the figure.
>
>  > but the x axis is displayed as scientific notation, I want it to be
>
>  > displayed as decimal notation.
>
>  >
>
>  > how to make x axis or y axis values displayed as decimal notation
> on
>
>  > the left-bottom corner?
>
>  >
>
>  > *Best Regards,*
>
>  >
>
>  > *Ardeal Liang*
>
> Something like this, assuming your Axes is ax:
>
> from matplotlib.ticker import ScalarFormatter
>
> fmt_no_sci = ScalarFormatter(useOffset=False)
>
> fmt_no_sci.set_scientific(False)
>
> ax.fmt_xaxis = fmt_no_sci
>
> Eric
>
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