Minor tick labels

Community matplotlib-users
1

Hi all,

I am trying to change the labels of minor ticks, but leave the labels of the major ticks unchanged. To do this, I use the following function:

ax = plt.subplot(111)
ax.set_xticks([1,3,5])
ax.set_xticks([2,4], minor=True)
ax.set_xticklabels(["a", "b"], minor=True)

However, in result of the function both minor and major tick labels are changes. I checked the source code of XAxis.set_ticklabels and it contains following lines:

axis.py: lines 1335-1342

        if minor:
            self.set_minor_formatter(mticker.FixedFormatter(ticklabels))
            ticks = self.get_minor_ticks()
        else:
            self.set_major_formatter( mticker.FixedFormatter(ticklabels) )
            ticks = self.get_major_ticks()

        self.set_major_formatter( mticker.FixedFormatter(ticklabels) )

Note that the last lines sets the major tick formatter regardless of the "minor" argument. Is it intentional behaviour?

Yours,

Bartosz

2

Thanks for the report (and the good detective work). Fixed in trunk.

(As far as I can tell, this is due to an SVN merge error from the
transforms branch.)

Ryan

···

On Tue, Jun 29, 2010 at 7:16 AM, Bartosz Telenczuk <b.telenczuk@...2786...> wrote:

Hi all,

I am trying to change the labels of minor ticks, but leave the labels of the major ticks unchanged. To do this, I use the following function:

ax = plt.subplot(111)
ax.set_xticks([1,3,5])
ax.set_xticks([2,4], minor=True)
ax.set_xticklabels(["a", "b"], minor=True)

However, in result of the function both minor and major tick labels are changes. I checked the source code of XAxis.set_ticklabels and it contains following lines:

axis.py: lines 1335-1342

   if minor:
       self\.set\_minor\_formatter\(mticker\.FixedFormatter\(ticklabels\)\)
       ticks = self\.get\_minor\_ticks\(\)
   else:
       self\.set\_major\_formatter\( mticker\.FixedFormatter\(ticklabels\) \)
       ticks = self\.get\_major\_ticks\(\)

   self\.set\_major\_formatter\( mticker\.FixedFormatter\(ticklabels\) \)

Note that the last lines sets the major tick formatter regardless of the "minor" argument. Is it intentional behaviour?

--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma