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

Sun Oct 29 22:29:27 EDT 2017

Hi Jody,

Please check the red ellipse in the picture.

I want the value 1.85092e+06 to be 1850922 in the red ellipse in the following picture.

fmt_no_sci = ScalarFormatter(useOffset=False)
fmt_no_sci.set_scientific(False)
# ax.fmt_xaxis = fmt_no_sci

fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(testdata)
ax.fmt_xaxis = fmt_no_sci
plt.show(0)

The x axis value displayed at the left-bottom corner of the figure is still scientific notation, but not decimal notation.

Please check the x axis value displayed at the left-bottom corner of the figure in the red circle.

[cid:image001.jpg at 01D35169.F2F33F40]

Best Regards,
Ardeal Liang

From: Jody Klymak [mailto:jklymak at uvic.ca]
Sent: 2017年10月30日 10:24
To: Ardeal LIANG <ardeal.liang at philips.com>
Cc: Firing Eric <efiring at hawaii.edu>; matplotlib-users at python.org
Subject: Re: [Matplotlib-users] Scientific notation digits at left-bottom corner of figure

On Oct 29, 2017, at  17:46 PM, Ardeal LIANG <ardeal.liang at philips.com<mailto:ardeal.liang at philips.com>> wrote:

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

Hi Ardeal,

Its not clear to me what you want.  Do you want 3.2 x 10^3 instead of 0.0032?  The former is scientific and the latter decimal.

Thanks,  Jody

-----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<mailto:ardeal.liang at philips.com>>; matplotlib-users at python.org<mailto: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<mailto: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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