question about axis scale multiplier

HI,
i am making a scatter plot and i simply use defaults for tick formatting etc;
when i plot the data the plot show on the x axis a multiplier scaling with scintific notation;
i would like to get rid of it , the data looks like this:

values5 = [-102.44,-102.51,-102.47,-102.52,-102.52,-102.51,-102.44,-102.51,-102.47
           -102.52,-102.52,-102.51,-102.52,-102.49,-102.51,-102.51,-102.51,-102.52
           -102.57,-102.46,-102.55,-102.51,-102.49,-102.51,-102.51,-102.51,-102.52
           ......]

values6 = [-98.58,-98.48,-98.5,-98.47,-98.52,-98.48,-98.58,-98.48,-98.5,-98.47,-98.52,
           -98.48,-98.48,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,
           -98.55,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,-98.55,
           -98.53,-98.48,-98.47,-98.42,-98.48,-98.45,-98.47,-98.52,-98.45,-98.58,
             ....]

and when the plot is shown as in the the attachement it show the scintific notation
at the x scale.

Any input is appreciated. Thank you much
bye for now

Margherita

sendscat.GIF

Margherita Vittone wiersma wrote:

HI,
i am making a scatter plot and i simply use defaults for tick formatting etc;
when i plot the data the plot show on the x axis a multiplier scaling with scintific notation;
i would like to get rid of it , the data looks like this:

values5 = [-102.44,-102.51,-102.47,-102.52,-102.52,-102.51,-102.44,-102.51,-102.47
           -102.52,-102.52,-102.51,-102.52,-102.49,-102.51,-102.51,-102.51,-102.52
           -102.57,-102.46,-102.55,-102.51,-102.49,-102.51,-102.51,-102.51,-102.52
           ......]

values6 = [-98.58,-98.48,-98.5,-98.47,-98.52,-98.48,-98.58,-98.48,-98.5,-98.47,-98.52,
           -98.48,-98.48,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,
           -98.55,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,-98.55,
           -98.53,-98.48,-98.47,-98.42,-98.48,-98.45,-98.47,-98.52,-98.45,-98.58,
             ....]

and when the plot is shown as in the the attachement it show the scintific notation
at the x scale.

If it were just a matter of scientific notation, you would be able to use the ticklabel_format Axes method with style='plain' to turn it off. The real problem, though, is that an offset is being used. With mpl from svn, you can also turn that off with the ticklabel_format() function or method, but with released versions you need something a little more arcane, e.g.

import pyplot as plt
plt.scatter(values5, values6)
ax = plt.gca()
ax.xaxis.set_major_formatter(plt.ScalarFormatter(useOffset=False))
#ax.xaxis.set_major_locator(plt.MaxNLocator(nbins=6, steps=[1,2,5,10]))
plt.draw()

The commented-out line reduces the number of tick marks; you may want to do this because without the offset, the tick labels can get a bit long and crowded.

Eric

···

Any input is appreciated. Thank you much
bye for now

Margherita

------------------------------------------------------------------------

HI,
i am making a scatter plot and i simply use defaults for tick formatting etc;
when i plot the data the plot show on the x axis a multiplier scaling with scintific notation;
i would like to get rid of it , the data looks like this:

values5 = [-102.44,-102.51,-102.47,-102.52,-102.52,-102.51,-102.44,-102.51,-102.47
           -102.52,-102.52,-102.51,-102.52,-102.49,-102.51,-102.51,-102.51,-102.52
           -102.57,-102.46,-102.55,-102.51,-102.49,-102.51,-102.51,-102.51,-102.52
           ......]

values6 = [-98.58,-98.48,-98.5,-98.47,-98.52,-98.48,-98.58,-98.48,-98.5,-98.47,-98.52,
           -98.48,-98.48,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,
     -98.55,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,-98.55,
     -98.53,-98.48,-98.47,-98.42,-98.48,-98.45,-98.47,-98.52,-98.45,-98.58,
             ....]

and when the plot is shown as in the the attachement it show the scintific notation
at the x scale.

Any input is appreciated. Thank you much
bye for now

Margherita

------------------------------------------------------------------------

------------------------------------------------------------------------

------------------------------------------------------------------------------

------------------------------------------------------------------------

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Hello Eric,
thank you so much fo your feedback and the fix! it works as expected.
bye for now
Margherita

···

----- Original Message -----
From: Eric Firing <efiring@...202...>
Date: Friday, April 30, 2010 6:01 pm
Subject: Re: [Matplotlib-users] question about axis scale multiplier

Margherita Vittone wiersma wrote:
> HI,
> i am making a scatter plot and i simply use defaults for tick
formatting etc;
> when i plot the data the plot show on the x axis a multiplier
scaling with scintific notation;
> i would like to get rid of it , the data looks like this:
>
> values5 = [-102.44,-102.51,-102.47,-102.52,-102.52,-102.51,-102.44,-102.51,-102.47
> -102.52,-102.52,-102.51,-102.52,-102.49,-102.51,-102.51,-102.51,-102.52
> -102.57,-102.46,-102.55,-102.51,-102.49,-102.51,-102.51,-102.51,-102.52
> ......]
>
> values6 = [-98.58,-98.48,-98.5,-98.47,-98.52,-98.48,-98.58,-98.48,-98.5,-98.47,-98.52,
> -98.48,-98.48,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,
> -98.55,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,-98.55,
> -98.53,-98.48,-98.47,-98.42,-98.48,-98.45,-98.47,-98.52,-98.45,-98.58,
> ....]
>
>
> and when the plot is shown as in the the attachement it show the
scintific notation
> at the x scale.

If it were just a matter of scientific notation, you would be able to

use the ticklabel_format Axes method with style='plain' to turn it
off.
   The real problem, though, is that an offset is being used. With
mpl
from svn, you can also turn that off with the ticklabel_format()
function or method, but with released versions you need something a
little more arcane, e.g.

import pyplot as plt
plt.scatter(values5, values6)
ax = plt.gca()
ax.xaxis.set_major_formatter(plt.ScalarFormatter(useOffset=False))
#ax.xaxis.set_major_locator(plt.MaxNLocator(nbins=6, steps=[1,2,5,10]))
plt.draw()

The commented-out line reduces the number of tick marks; you may want
to
do this because without the offset, the tick labels can get a bit
long
and crowded.

Eric

>
> Any input is appreciated. Thank you much
> bye for now
>
> Margherita
>
>
>
>
> ------------------------------------------------------------------------
>
> HI,
> i am making a scatter plot and i simply use defaults for tick
formatting etc;
> when i plot the data the plot show on the x axis a multiplier
scaling with scintific notation;
> i would like to get rid of it , the data looks like this:
>
> values5 = [-102.44,-102.51,-102.47,-102.52,-102.52,-102.51,-102.44,-102.51,-102.47
> -102.52,-102.52,-102.51,-102.52,-102.49,-102.51,-102.51,-102.51,-102.52
> -102.57,-102.46,-102.55,-102.51,-102.49,-102.51,-102.51,-102.51,-102.52
> ......]
>
> values6 = [-98.58,-98.48,-98.5,-98.47,-98.52,-98.48,-98.58,-98.48,-98.5,-98.47,-98.52,
> -98.48,-98.48,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,
> -98.55,-98.48,-98.48,-98.53,-98.48,-98.52,-98.58,-98.58,-98.47,-98.55,
> -98.53,-98.48,-98.47,-98.42,-98.48,-98.45,-98.47,-98.52,-98.45,-98.58,
> ....]
>
>
> and when the plot is shown as in the the attachement it show the
scintific notation
> at the x scale.
>
> Any input is appreciated. Thank you much
> bye for now
>
> Margherita
>
>
>
>
> ------------------------------------------------------------------------
>
>
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------------
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users