xticks not lining up with data

Community matplotlib-users
1

Hi,

I'm having a strange problem and I don't understand why this is
happening. I am plotting the dataframe in: http://pastebin.com/C0Pt0iYd
but I'm getting too few tick marks. My code for the plot is:

   fig, ax = plt.subplots()
   plt.rc('text', usetex=True)
   fig.autofmt_xdate()
   ax.plot(indices.carli,'b-',label=r'\textsf{Carli}')
   ax.plot(indices.geomean,'g-',label=r'\textsf{GeoMean}')
   ax.plot(indices.laspeyres,'c-',label=r'\textsf{Laspeyres}')
   ax.plot(indices.paasche,'m-',label=r'\textsf{Paasche}')
   ax.plot(indices.tornqvist,'y-',label=r'\textsf{T\"ornqvist}')
   plt.xlabel(r'\textsf{Month}')
   plt.ylabel(r'\textsf{Index value}')
   ax.set_xticklabels(indices.index)

Any ideas what I'm doing wrong?

Thanks,
Ted

figure_1.png

2

Why are you calling ax.set_xticklabels()?. Why not pass the x values to ax.plot() along with the y values? Then you won’t need to set the labels because matplotlib will do it for you.

Ben Root

···

On Wed, Jun 17, 2015 at 10:13 AM, Ted To <rainexpected@…3956…> wrote:

Hi,

I’m having a strange problem and I don’t understand why this is

happening. I am plotting the dataframe in: http://pastebin.com/C0Pt0iYd

but I’m getting too few tick marks. My code for the plot is:

fig, ax = plt.subplots()

plt.rc(‘text’, usetex=True)

fig.autofmt_xdate()

ax.plot(indices.carli,‘b-’,label=r’\textsf{Carli}')

ax.plot(indices.geomean,‘g-’,label=r’\textsf{GeoMean}')

ax.plot(indices.laspeyres,‘c-’,label=r’\textsf{Laspeyres}')

ax.plot(indices.paasche,‘m-’,label=r’\textsf{Paasche}')

ax.plot(indices.tornqvist,‘y-’,label=r’\textsf{T"ornqvist}')

plt.xlabel(r’\textsf{Month}')

plt.ylabel(r’\textsf{Index value}')

ax.set_xticklabels(indices.index)

Any ideas what I’m doing wrong?

Thanks,

Ted

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3

Unless I recall incorrectly, I think I am using set_xticklabels because indices.index are strings. When I tried specifying ax.plot(indices.index,indices.carli) I get a ValueError.

Ted

···

On 2015-06-17 10:28 am, Benjamin Root wrote:

Why are you calling ax.set_xticklabels()?. Why not pass the x values
to ax.plot() along with the y values? Then you won't need to set the
labels because matplotlib will do it for you.

Ben Root

On Wed, Jun 17, 2015 at 10:13 AM, Ted To <rainexpected@...3956...> wrote:

Hi,

I'm having a strange problem and I don't understand why this is
happening. I am plotting the dataframe in:
carli geomean laspeyres paasche tornqvistmy Aug 2013 100.000000 100.000 - Pastebin.com [1]
but I'm getting too few tick marks. My code for the plot is:

fig, ax = plt.subplots()
plt.rc('text', usetex=True)
fig.autofmt_xdate()
ax.plot(indices.carli,'b-',label=r'textsf{Carli}')
ax.plot(indices.geomean,'g-',label=r'textsf{GeoMean}')
ax.plot(indices.laspeyres,'c-',label=r'textsf{Laspeyres}')
ax.plot(indices.paasche,'m-',label=r'textsf{Paasche}')
ax.plot(indices.tornqvist,'y-',label=r'textsf{T"ornqvist}')
plt.xlabel(r'textsf{Month}')
plt.ylabel(r'textsf{Index value}')
ax.set_xticklabels(indices.index)

Any ideas what I'm doing wrong?

Thanks,
Ted

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4

Then convert them to date objects? Also, I am guessing that the length of indices.index is not the same as indices.carli, which could also be the reason for a ValueError. So you would need to use whatever pandas variable that indices.index derived from.

Ben Root

···

On Wed, Jun 17, 2015 at 12:48 PM, Ted To <rainexpected@…3956…> wrote:

Unless I recall incorrectly, I think I am using set_xticklabels because indices.index are strings. When I tried specifying ax.plot(indices.index,indices.carli) I get a ValueError.

Ted

On 2015-06-17 10:28 am, Benjamin Root wrote:

Why are you calling ax.set_xticklabels()?. Why not pass the x values

to ax.plot() along with the y values? Then you won’t need to set the

labels because matplotlib will do it for you.

Ben Root

On Wed, Jun 17, 2015 at 10:13 AM, Ted To <rainexpected@…3956…> wrote:

Hi,

I’m having a strange problem and I don’t understand why this is

happening. I am plotting the dataframe in:

http://pastebin.com/C0Pt0iYd [1]

but I’m getting too few tick marks. My code for the plot is:

fig, ax = plt.subplots()

plt.rc(‘text’, usetex=True)

fig.autofmt_xdate()

ax.plot(indices.carli,‘b-’,label=r’textsf{Carli}')

ax.plot(indices.geomean,‘g-’,label=r’textsf{GeoMean}')

ax.plot(indices.laspeyres,‘c-’,label=r’textsf{Laspeyres}')

ax.plot(indices.paasche,‘m-’,label=r’textsf{Paasche}')

ax.plot(indices.tornqvist,‘y-’,label=r’textsf{T"ornqvist}')

plt.xlabel(r’textsf{Month}')

plt.ylabel(r’textsf{Index value}')

ax.set_xticklabels(indices.index)

Any ideas what I’m doing wrong?

Thanks,

Ted

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users [2]

Links:

[1] http://pastebin.com/C0Pt0iYd

[2] https://lists.sourceforge.net/lists/listinfo/matplotlib-users

5

Thank you, that worked. And also showed me why the xticks were mismatched -- apparently my index was not sorted.

···

On 2015-06-17 12:55 pm, Benjamin Root wrote:

Then convert them to date objects? Also, I am guessing that the length
of indices.index is not the same as indices.carli, which could also be
the reason for a ValueError. So you would need to use whatever pandas
variable that indices.index derived from.

Ben Root

On Wed, Jun 17, 2015 at 12:48 PM, Ted To <rainexpected@...3956...> wrote:

Unless I recall incorrectly, I think I am using set_xticklabels
because indices.index are strings. When I tried specifying
ax.plot(indices.index,indices.carli) I get a ValueError.

Ted

On 2015-06-17 10:28 am, Benjamin Root wrote:
Why are you calling ax.set_xticklabels()?. Why not pass the x
values
to ax.plot() along with the y values? Then you won't need to set
the
labels because matplotlib will do it for you.

Ben Root

On Wed, Jun 17, 2015 at 10:13 AM, Ted To <rainexpected@...3956...> >> wrote:

Hi,

I'm having a strange problem and I don't understand why this is
happening. I am plotting the dataframe in:
carli geomean laspeyres paasche tornqvistmy Aug 2013 100.000000 100.000 - Pastebin.com [1] [1]
but I'm getting too few tick marks. My code for the plot is:

fig, ax = plt.subplots()
plt.rc('text', usetex=True)
fig.autofmt_xdate()
ax.plot(indices.carli,'b-',label=r'textsf{Carli}')
ax.plot(indices.geomean,'g-',label=r'textsf{GeoMean}')
ax.plot(indices.laspeyres,'c-',label=r'textsf{Laspeyres}')
ax.plot(indices.paasche,'m-',label=r'textsf{Paasche}')
ax.plot(indices.tornqvist,'y-',label=r'textsf{T"ornqvist}')
plt.xlabel(r'textsf{Month}')
plt.ylabel(r'textsf{Index value}')
ax.set_xticklabels(indices.index)

Any ideas what I'm doing wrong?

Thanks,
Ted

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

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Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
matplotlib-users List Signup and Options [2]
[2]

Links:
------
[1] carli geomean laspeyres paasche tornqvistmy Aug 2013 100.000000 100.000 - Pastebin.com [1]
[2] matplotlib-users List Signup and Options
[2]

Links:
------
[1] carli geomean laspeyres paasche tornqvistmy Aug 2013 100.000000 100.000 - Pastebin.com
[2] matplotlib-users List Signup and Options