Mailman 3 March 2018 - Matplotlib-users

ToolManager
by Juan Nunez-Iglesias April 28, 2018

April 28, 2018

Hi, I’m trying to add elements to the matplotlib toolbar *using the Qt5 backend*. I tried running this example code: https://matplotlib.org/examples/user_interfaces/toolmanager.html But unfortunately it fails when using Qt5 with the error fig.canvas.manager.toolmanager.add_tool('List', ListTools) AttributeError: 'FigureManagerQT' object has no attribute ‘toolmanager' Is toolmanager only available for GTK? Is there an equivalent way of achieving what the script is doing in other backends? Thanks, Juan.

2 3

automatic list of r'$2$'...
by Vincent Douce Mathoscope April 20, 2018

April 20, 2018

hi i try this : ''' Lx,x,Ly,y=[],xmin,[],ymin Lrx,Lry=[],[] while (x<=xmax): Lx.append(x) Lrx.append("$".join(["r'",str(x),"'"])) x+=1 while (y<=ymax): Ly.append(y) y+=1 ''' but it creates a Lrx list like this : ["r'$-2.5$'", "r'$-1.5$'", "r'$-0.5$'", "r'$0.5$'", "r'$1.5$'", "r'$2.5$'"] and i want to obtain [r'$-2.5$', r'$-1.5$', r'$-0.5$', r'$0.5$', r'$1.5$', r'$2.5$'] i guess that r is an operator to deal with the $..$ expressions but not understand how to fix my definition thanks for your help Vincent –––––––––––––––––––––––––– Vincent Douce :=: Mathoscope :=: http://mathoscope.xyz <http://mathoscope.xyz/> 06°13°11°07°26 Bagnères de Bigorre 65200

5 5

Callback mechanism for animation completed?
by Paul Deitel April 20, 2018

April 20, 2018

I am trying to chain together a series of animations. Is there a callback mechanism of some sort that could be used to launch a new animation when another animation completes?

2 3

Re: [Matplotlib-users] Lien&bar combination graph.
by Juan Nunez-Iglesias March 30, 2018

March 30, 2018

Ah, I didn’t notice that you were doing pandas plotting instead of matplotlib. This is ok: pandas plot takes an ax= keyword that lets you specify an axis on which to plot. You can then ignore the secondary_y nonsense which is unnecessary if you use the matplotlib object-oriented API. The code below works for me. (Apologies for the primary y label, as I don’t know what your quantities represent. ;) Note, the title and x label need to happen on the first axes you declare, which in this case is ax_bar. If I tried to add them to ax_line nothing happened. import matplotlib.pyplot as plt import numpy as np import pandas as pd width = 1 # width of a bar m1_t = pd.DataFrame({ 'SD-0' :[246,211,212,85.3,131,370,124.3,115.8,135.3,145.2,104.3,59,42.4,55.8,20.2,13.9,5.15], 'SD-15' :[236,176,169,126,152,86.8,98,212,164,131,91,77.9,18.5,30.5,21.4,6.3,13.5], '15':[715,1260,639,783,949,1032,1155,1343,1095,744,451,304,251,110,88.6,56.2,52.2], '0' :[530,1173,762,669.5,867,1018,1221,1203,1148,632,501,338,265,195,135,111,107]}) fig, ax_bar = plt.subplots() ax_line = ax_bar.twinx() m1_t[['SD-0','SD-15']].plot(kind='bar', width = width, ax=ax_bar) m1_t['0'].plot(label='0 ppt',marker='o', ax=ax_line) m1_t['15'].plot(label='15 ppt',marker='o', ax=ax_line) ax_line.set_xlim(-width, m1_t.shape[0] + width) ax_line.set_xticklabels(('0.25','0.5','1','2','4','6','8','12','24','48','96','144','192','288','336','432','528')) ax_line.legend(loc='upper right', bbox_to_anchor=(1,0.85)) ax_line.set_ylabel("Concentration") ax_bar.set_title("Fish Study") ax_bar.set_xlabel("time") ax_bar.set_ylabel("whatever") plt.tight_layout() plt.show() On 29 Mar 2018, 6:46 PM -0400, Ravi Thakkar <ravi.thakkar369(a)gmail.com>, wrote: > Hi Juan, > Thanks. I want to draw bar graph and its showing error. I dont have mathematically derived data on axis, I have straight forward observations. I want to compare concentration of two different drug on by bar graph and another with two line graph. All in same graph. If you can suggest any example. TIA. > > > > On Thu, Mar 29, 2018 at 12:20 PM, Juan Nunez-Iglesias <jni.soma(a)gmail.com> wrote: > > > Hi Ravi, and welcome! > > > > > > I think this example does what you want? > > > https://matplotlib.org/examples/api/two_scales.html > > > > > > Juan. > > > > > > On 29 Mar 2018, 1:11 PM -0400, Ravi Thakkar <ravi.thakkar369(a)gmail.com>, wrote: > > > > Hi, > > > > Guys, I am new to programming field, learning python to represent my research data. > > > > Anyone here please help me to get the x axis label and separate label on both y axis. (as indicated in attached image). > > > > Code is attached. > > > > > > > > -- > > > > Ravi. > > > > _______________________________________________ > > > > Matplotlib-users mailing list > > > > Matplotlib-users(a)python.org > > > > https://mail.python.org/mailman/listinfo/matplotlib-users >

2 2

Lien&bar combination graph.
by Ravi Thakkar March 29, 2018

March 29, 2018

Hi, Guys, I am new to programming field, learning python to represent my research data. Anyone here please help me to get the x axis label and separate label on both y axis. (as indicated in attached image). Code is attached. -- Ravi.

2 1

Impossible to hide cursor data / imshow() / Toolbar message / format_cursor_data()
by Olivier March 25, 2018

March 25, 2018

Hello, Please consider the figure produced by "im = imshow(scipy.misc.face())". The message in the Toolbar reflects the position of the cursor and displays for example: "x=843.9 y=384.7 [91, 102, 88]" I changed the method "im.axes.format_coord()" in order to show specific information in the Toolbar message, and this works fine. However, the value of the cursor data, i.e. the string " [91, 102, 88]" in the example above, is still printed after my home-made coordinate information. PROBLEM: I don't want this information to be displayed. NOT A SOLUTION: I overrode the method "im.format_cursor_data()" so that it returns either "" or 'None'. However, in both cases, the brackets are still displayed, showing either " []" or " [None]", which I find unsatisfactory. It seems that the brackets are hardcoded in "backend_bases.NavigationToolbar2.mouse_move()". Is there a clean way to get rid of the cursor data and the brackets? If not, I suggest the patch below. Does it make sense? The effect is simply that if "im.format_cursor_data()" returns 'None', no cursor data will be appended to the coordinate information. Best regards, Olivier """ --- backend_bases.py 2017-12-10 04:59:43.000000000 +0100 +++ temp/backend_bases.py 2018-03-23 22:09:10.611351451 +0100 @@ -2898,7 +2898,9 @@ if a is not event.inaxes.patch: data = a.get_cursor_data(event) if data is not None: - s += ' [%s]' % a.format_cursor_data(data) + data_str = a.format_cursor_data(data) + if data_str is not None: + s += ' [%s]' % data_str if len(self.mode): self.set_message('%s, %s' % (self.mode, s)) """

2 3

Plot data
by alberto March 24, 2018

March 24, 2018

Hi , I'm trying to plot data (at 300K )with jupyter. apparently I do not get any error message, but no plot is generated. How can I solve it? I link my files regards Alberto https://drive.google.com/file/d/1VHMuXRWx8OhmIQsKYE8jj5WLkUhotOy_/view?usp=… https://drive.google.com/file/d/1dDpcs_DSweQLCETR08yC_CeqUQPUITtZ/view?usp=… https://drive.google.com/file/d/1H3RpjcKjaRLv-sOkDBBvQcmbqej3vSDM/view?usp=…

1 0

How to turn off matplotlib DEBUG msgs
by Mike Hagerty March 22, 2018

March 22, 2018

I recently installed the latest version of matplotlib via conda: # packages in environment: matplotlib 2.2.2 py27_0 conda-forge Now, as soon as matplotlib is imported by another module, it generates a ton of DEBUG messages (see below). How do I turn these off ?? Oddly, if I use the interactive python and import matplotlib directly, I don't get the messages, so it has something to do with how the code I'm using (obspy) imports the matplotlib module. I'm using mac osx 10.10.5 and I get similar results with python2.7 and python3.6 (conda) environments. Any advice would be appreciated. Cheers! -Mike > > >>> from obspy.taup import TauPyModel > [ DEBUG] $HOME=/Users/mth > [ DEBUG] matplotlib data path /usr/local/anaconda/envs/ > obspy_3.6/lib/python3.6/site-packages/matplotlib/mpl-data > [ DEBUG] loaded rc file /usr/local/anaconda/envs/ > obspy_3.6/lib/python3.6/site-packages/matplotlib/mpl-data/matplotlibrc > [ DEBUG] matplotlib version 2.2.2 > [ DEBUG] interactive is False > [ DEBUG] platform is darwin > [ DEBUG] loaded modules: ['builtins', 'sys', '_frozen_importlib', '_imp', > '_warnings', '_thread', '_weakref', '_frozen_importlib_external', '_io', > 'marshal', 'posix', 'zipimport', 'encodings', 'codecs', '_codecs', > 'encodings.aliases', 'encodings.utf_8', '_signal', '__main__', > 'encodings.latin_1', 'io', 'abc', '_weakrefset', 'site', 'os', 'errno', > 'stat', '_stat', 'posixpath', 'genericpath', 'os.path', '_collections_abc', > '_sitebuiltins', 'sysconfig', '_sysconfigdata_m_darwin_darwin', > '_osx_support', 're', 'enum', 'types', 'functools', '_functools', > 'collections', 'operator', '_operator', 'keyword', 'heapq', '_heapq', > 'itertools', 'reprlib', '_collections', 'weakref', 'collections.abc', > 'sre_compile', '_sre', 'sre_parse', 'sre_constants', '_locale', 'copyreg', > '_bootlocale', 'importlib', 'importlib._bootstrap', 'importlib._bootstrap_external', > 'warnings', 'importlib.util', 'importlib.abc', 'importlib.machinery', > 'contextlib', 'mpl_toolkits', 'encodings.cp437', 'readline', 'atexit', > 'rlcompleter', 'logging', 'time', 'traceback', 'linecache', 'tokenize', > 'token', 'string', '_string', 'threading', 'lib', 'lib.libyaml', 'yaml', > 'yaml.error', 'yaml.tokens', 'yaml.events', 'yaml.nodes', 'yaml.loader', > 'yaml.reader', 'yaml.scanner', 'yaml.parser', 'yaml.composer', > 'yaml.constructor', 'datetime', 'math', '_datetime', 'base64', 'struct', > '_struct', 'binascii', 'yaml.resolver', 'yaml.dumper', 'yaml.emitter', > 'yaml.serializer', 'yaml.representer', 'yaml.cyaml', '_yaml', 'lib.liblog', > 'lib.process_cmd', 'getopt', 'gettext', 'locale', 'copy', 'obspy', > '__future__', 'future', 'future.builtins', 'future.builtins.iterators', > 'future.utils', 'numbers', 'inspect', 'ast', '_ast', 'dis', 'opcode', > '_opcode', 'future.builtins.misc', 'requests', 'urllib3', > 'urllib3.connectionpool', 'socket', '_socket', 'selectors', 'select', > 'urllib3.exceptions', 'urllib3.packages', 'urllib3.packages.ssl_match_hostname', > 'ssl', 'ipaddress', 'textwrap', '_ssl', 'urllib3.packages.six', > 'urllib3.packages.six.moves', 'http', 'http.client', 'email', > 'email.parser', 'email.feedparser', 'email.errors', 'email._policybase', > 'email.header', 'email.quoprimime', 'email.base64mime', 'email.charset', > 'email.encoders', 'quopri', 'email.utils', 'random', 'hashlib', '_hashlib', > '_blake2', '_sha3', 'bisect', '_bisect', '_random', 'urllib', > 'urllib.parse', 'email._parseaddr', 'calendar', 'email.message', 'uu', > 'email._encoded_words', 'email.iterators', 'urllib3.packages.six.moves.http_client', > 'queue', 'urllib3.connection', 'urllib3.util', 'urllib3.util.connection', > 'urllib3.util.wait', 'urllib3.util.selectors', 'urllib3.util.request', > 'urllib3.util.response', 'urllib3.util.ssl_', 'hmac', > 'urllib3.util.timeout', 'urllib3.util.retry', 'urllib3.util.url', > 'urllib3._collections', 'urllib3.request', 'urllib3.filepost', 'uuid', > 'ctypes', '_ctypes', 'ctypes._endian', 'ctypes.util', 'shutil', 'fnmatch', > 'zlib', 'bz2', '_compression', '_bz2', 'lzma', '_lzma', 'pwd', 'grp', > 'subprocess', 'signal', '_posixsubprocess', 'ctypes.macholib', > 'ctypes.macholib.dyld', 'ctypes.macholib.framework', > 'ctypes.macholib.dylib', 'urllib3.fields', 'mimetypes', > 'urllib3.packages.six.moves.urllib', 'urllib3.packages.six.moves.urllib.parse', > 'urllib3.response', 'urllib3.poolmanager', 'chardet', 'chardet.compat', > 'chardet.universaldetector', 'chardet.charsetgroupprober', 'chardet.enums', > 'chardet.charsetprober', 'chardet.escprober', 'chardet.codingstatemachine', > 'chardet.escsm', 'chardet.latin1prober', 'chardet.mbcsgroupprober', > 'chardet.utf8prober', 'chardet.mbcssm', 'chardet.sjisprober', > 'chardet.mbcharsetprober', 'chardet.chardistribution', 'chardet.euctwfreq', > 'chardet.euckrfreq', 'chardet.gb2312freq', 'chardet.big5freq', > 'chardet.jisfreq', 'chardet.jpcntx', 'chardet.eucjpprober', > 'chardet.gb2312prober', 'chardet.euckrprober', 'chardet.cp949prober', > 'chardet.big5prober', 'chardet.euctwprober', 'chardet.sbcsgroupprober', > 'chardet.sbcharsetprober', 'chardet.langcyrillicmodel', > 'chardet.langgreekmodel', 'chardet.langbulgarianmodel', > 'chardet.langthaimodel', 'chardet.langhebrewmodel', 'chardet.hebrewprober', > 'chardet.langturkishmodel', 'chardet.version', 'requests.exceptions', > 'urllib3.contrib', 'urllib3.contrib.pyopenssl', 'OpenSSL', > 'OpenSSL.crypto', 'six', 'cryptography', 'cryptography.__about__', > 'cryptography.x509', 'cryptography.x509.certificate_transparency', > 'cryptography.x509.base', 'cryptography.utils', 'cryptography.hazmat', > 'cryptography.hazmat.primitives', 'cryptography.hazmat.primitives.asymmetric', > 'cryptography.hazmat.primitives.asymmetric.dsa', 'cryptography.hazmat. > primitives.asymmetric.ec', 'cryptography.hazmat.primitives.asymmetric.rsa', > 'cryptography.exceptions', 'cryptography.hazmat.backends', > 'cryptography.hazmat.backends.interfaces', 'cryptography.x509.extensions', > 'asn1crypto', 'asn1crypto.version', 'asn1crypto.keys', > 'asn1crypto._elliptic_curve', 'asn1crypto._int', 'platform', > 'asn1crypto.util', 'asn1crypto._errors', 'asn1crypto._iri', > 'encodings.idna', 'stringprep', 'unicodedata', 'asn1crypto._types', > 'asn1crypto._ordereddict', 'asn1crypto._ffi', 'asn1crypto._perf', > 'asn1crypto._perf._big_num_ctypes', 'asn1crypto.algos', > 'asn1crypto.core', 'asn1crypto._teletex_codec', 'asn1crypto.parser', > 'cryptography.hazmat.primitives.constant_time', > 'cryptography.hazmat.bindings', '_cffi_backend', '_constant_time.lib', > '_constant_time', 'cryptography.hazmat.bindings._constant_time', > 'cryptography.hazmat.primitives.serialization', > 'cryptography.x509.general_name', 'idna', 'idna.package_data', > 'idna.core', 'idna.idnadata', 'idna.intranges', 'six.moves', ' > cryptography.x509.name', 'cryptography.x509.oid', 'cryptography.hazmat.primitives.hashes', > 'OpenSSL._util', 'cryptography.hazmat.bindings.openssl', > 'cryptography.hazmat.bindings.openssl.binding', '_openssl.lib', > '_openssl', 'cryptography.hazmat.bindings._openssl', > 'cryptography.hazmat.bindings.openssl._conditional', 'OpenSSL.SSL', > 'OpenSSL.version', 'cryptography.hazmat.backends.openssl', > 'cryptography.hazmat.backends.openssl.backend', > 'cryptography.hazmat.backends.openssl.aead', > 'cryptography.hazmat.backends.openssl.ciphers', 'cryptography.hazmat.primitives.ciphers', > 'cryptography.hazmat.primitives.ciphers.base', 'cryptography.hazmat.primitives.ciphers.modes', > 'cryptography.hazmat.backends.openssl.cmac', 'cryptography.hazmat.primitives.mac', > 'cryptography.hazmat.backends.openssl.decode_asn1', > 'cryptography.hazmat.backends.openssl.dh', 'cryptography.hazmat.primitives.asymmetric.dh', > 'cryptography.hazmat.backends.openssl.dsa', 'cryptography.hazmat.backends.openssl.utils', > 'cryptography.hazmat.primitives.asymmetric.utils', ' > cryptography.hazmat.backends.openssl.ec', 'cryptography.hazmat.backends.openssl.encode_asn1', > 'cryptography.hazmat.backends.openssl.hashes', > 'cryptography.hazmat.backends.openssl.hmac', > 'cryptography.hazmat.backends.openssl.rsa', 'cryptography.hazmat. > primitives.asymmetric.padding', 'cryptography.hazmat.backends.openssl.x25519', > 'cryptography.hazmat.primitives.asymmetric.x25519', > 'cryptography.hazmat.backends.openssl.x509', 'cryptography.hazmat. > primitives.ciphers.algorithms', 'cryptography.hazmat.primitives.kdf', > 'cryptography.hazmat.primitives.kdf.scrypt', > 'urllib3.packages.backports', 'urllib3.packages.backports.makefile', > 'requests.__version__', 'requests.utils', 'cgi', 'html', 'html.entities', > 'tempfile', 'requests.certs', 'certifi', 'certifi.core', > 'requests._internal_utils', 'requests.compat', 'json', 'json.decoder', > 'json.scanner', '_json', 'json.encoder', 'urllib.request', 'urllib.error', > 'urllib.response', '_scproxy', 'http.cookiejar', 'http.cookies', > 'requests.cookies', 'requests.structures', 'requests.packages', > 'requests.packages.urllib3', 'requests.packages.urllib3.connectionpool', > 'requests.packages.urllib3.exceptions', 'requests.packages.urllib3.packages', > 'requests.packages.urllib3.packages.ssl_match_hostname', > 'requests.packages.urllib3.packages.six', 'requests.packages.urllib3.packages.six.moves', > 'requests.packages.urllib3.packages.six.moves.http_client', > 'requests.packages.urllib3.connection', 'requests.packages.urllib3.util', > 'requests.packages.urllib3.util.connection', 'requests.packages.urllib3.util.wait', > 'requests.packages.urllib3.util.selectors', 'requests.packages.urllib3.util.request', > 'requests.packages.urllib3.util.response', 'requests.packages.urllib3.util.ssl_', > 'requests.packages.urllib3.util.timeout', 'requests.packages.urllib3.util.retry', > 'requests.packages.urllib3.util.url', 'requests.packages.urllib3._collections', > 'requests.packages.urllib3.request', 'requests.packages.urllib3.filepost', > 'requests.packages.urllib3.fields', 'requests.packages.urllib3.packages.six.moves.urllib', > 'requests.packages.urllib3.packages.six.moves.urllib.parse', > 'requests.packages.urllib3.response', 'requests.packages.urllib3.poolmanager', > 'requests.packages.urllib3.contrib', 'requests.packages.urllib3.contrib.pyopenssl', > 'requests.packages.urllib3.packages.backports', > 'requests.packages.urllib3.packages.backports.makefile', > 'requests.packages.idna', 'requests.packages.idna.package_data', > 'requests.packages.idna.core', 'requests.packages.idna.idnadata', > 'requests.packages.idna.intranges', 'requests.packages.chardet', > 'requests.packages.chardet.compat', 'requests.packages.chardet.universaldetector', > 'requests.packages.chardet.charsetgroupprober', > 'requests.packages.chardet.enums', 'requests.packages.chardet.charsetprober', > 'requests.packages.chardet.escprober', 'requests.packages.chardet.codingstatemachine', > 'requests.packages.chardet.escsm', 'requests.packages.chardet.latin1prober', > 'requests.packages.chardet.mbcsgroupprober', 'requests.packages.chardet.utf8prober', > 'requests.packages.chardet.mbcssm', 'requests.packages.chardet.sjisprober', > 'requests.packages.chardet.mbcharsetprober', 'requests.packages.chardet.chardistribution', > 'requests.packages.chardet.euctwfreq', 'requests.packages.chardet.euckrfreq', > 'requests.packages.chardet.gb2312freq', 'requests.packages.chardet.big5freq', > 'requests.packages.chardet.jisfreq', 'requests.packages.chardet.jpcntx', > 'requests.packages.chardet.eucjpprober', 'requests.packages.chardet.gb2312prober', > 'requests.packages.chardet.euckrprober', 'requests.packages.chardet.cp949prober', > 'requests.packages.chardet.big5prober', 'requests.packages.chardet.euctwprober', > 'requests.packages.chardet.sbcsgroupprober', 'requests.packages.chardet.sbcharsetprober', > 'requests.packages.chardet.langcyrillicmodel', 'requests.packages.chardet.langgreekmodel', > 'requests.packages.chardet.langbulgarianmodel', > 'requests.packages.chardet.langthaimodel', 'requests.packages.chardet.langhebrewmodel', > 'requests.packages.chardet.hebrewprober', 'requests.packages.chardet.langturkishmodel', > 'requests.packages.chardet.version', 'requests.models', 'requests.hooks', > 'requests.auth', 'requests.status_codes', 'requests.api', > 'requests.sessions', 'requests.adapters', 'urllib3.contrib.socks', 'socks', > 'obspy.core', 'obspy.core.utcdatetime', 'obspy.core.util', > 'obspy.core.util.attribdict', 'obspy.core.util.base', 'doctest', > 'argparse', 'difflib', 'pdb', 'cmd', 'bdb', 'code', 'codeop', 'glob', > 'pprint', 'unittest', 'unittest.result', 'unittest.util', 'unittest.case', > 'unittest.suite', 'unittest.loader', 'unittest.main', 'unittest.runner', > 'unittest.signals', 'numpy', 'numpy._globals', 'numpy.__config__', > 'numpy.version', 'numpy._import_tools', 'numpy.add_newdocs', 'numpy.lib', ' > numpy.lib.info', 'numpy.lib.type_check', 'numpy.core', 'numpy.core.info', > 'numpy.core.multiarray', 'numpy.core.umath', 'numpy.core._internal', > 'numpy.compat', 'numpy.compat._inspect', 'numpy.compat.py3k', 'pathlib', > 'ntpath', 'numpy.core.numerictypes', 'numpy.core.numeric', 'pickle', > '_compat_pickle', '_pickle', 'numpy.core.fromnumeric', > 'numpy.core._methods', 'numpy.core.arrayprint', 'numpy.core.defchararray', > 'numpy.core.records', 'numpy.core.memmap', 'numpy.core.function_base', > 'numpy.core.machar', 'numpy.core.getlimits', 'numpy.core.shape_base', > 'numpy.core.einsumfunc', 'numpy.testing', 'numpy.testing.decorators', > 'numpy.testing.nose_tools', 'numpy.testing.nose_tools.decorators', > 'numpy.testing.nose_tools.utils', 'numpy.lib.utils', > 'numpy.testing.nosetester', 'numpy.testing.nose_tools.nosetester', > 'numpy.testing.utils', 'numpy.lib.ufunclike', 'numpy.lib.index_tricks', > 'numpy.lib.function_base', 'numpy.lib.twodim_base', 'numpy.matrixlib', > 'numpy.matrixlib.defmatrix', 'numpy.lib.stride_tricks', 'numpy.lib.mixins', > 'numpy.lib.nanfunctions', 'numpy.lib.shape_base', 'numpy.lib.scimath', > 'numpy.lib.polynomial', 'numpy.linalg', 'numpy.linalg.info', > 'numpy.linalg.linalg', 'numpy.linalg.lapack_lite', > 'numpy.linalg._umath_linalg', 'numpy.lib.arraysetops', 'numpy.lib.npyio', > 'numpy.lib.format', 'numpy.lib._datasource', 'numpy.lib._iotools', > 'numpy.lib.financial', 'decimal', '_decimal', 'numpy.lib.arrayterator', > 'numpy.lib.arraypad', 'numpy.lib._version', 'numpy._distributor_init', > 'numpy._mklinit', 'numpy.fft', 'numpy.fft.info', 'numpy.fft.fftpack', > 'numpy.fft.fftpack_lite', 'numpy.fft.helper', 'numpy.polynomial', > 'numpy.polynomial.polynomial', 'numpy.polynomial.polyutils', > 'numpy.polynomial._polybase', 'numpy.polynomial.chebyshev', > 'numpy.polynomial.legendre', 'numpy.polynomial.hermite', > 'numpy.polynomial.hermite_e', 'numpy.polynomial.laguerre', 'numpy.random', ' > numpy.random.info', 'cython_runtime', 'mtrand', 'numpy.random.mtrand', > 'numpy.ctypeslib', 'numpy.ma', 'numpy.ma.core', 'numpy.ma.extras', > 'pkg_resources', 'zipfile', 'pkgutil', 'plistlib', 'xml', 'xml.parsers', > 'xml.parsers.expat', 'pyexpat.errors', 'pyexpat.model', 'pyexpat', > 'xml.parsers.expat.model', 'xml.parsers.expat.errors', > 'pkg_resources.extern', 'pkg_resources._vendor', > 'pkg_resources.extern.six', 'pkg_resources._vendor.six', > 'pkg_resources.extern.six.moves', 'pkg_resources._vendor.six.moves', > 'pkg_resources.py31compat', 'pkg_resources.extern.appdirs', > 'pkg_resources._vendor.packaging.__about__', 'pkg_resources.extern.packaging', > 'pkg_resources.extern.packaging.version', 'pkg_resources.extern.packaging._structures', > 'pkg_resources.extern.packaging.specifiers', 'pkg_resources.extern.packaging._compat', > 'pkg_resources.extern.packaging.requirements', 'pkg_resources.extern.pyparsing', > 'pkg_resources.extern.six.moves.urllib', 'pkg_resources.extern.packaging.markers', > 'obspy.core.util.misc', 'obspy.core.util.obspy_types', > 'obspy.core.util.testing', 'distutils', 'distutils.version', 'lxml', > '_cython_0_28', 'lxml.etree', 'lxml._elementpath', 'gzip', > 'obspy.core.util.version', 'obspy.core.trace', 'decorator', > 'obspy.core.compatibility', 'unittest.mock', 'configparser', > 'obspy.core.util.decorator', 'tarfile', 'obspy.core.util.deprecation_helpers', > 'obspy.core.stream', 'obspy.scripts', 'obspy.scripts.runtests', > 'obspy.core.event', 'obspy.core.event.base', 'obspy.core.event.header', > 'obspy.core.event.catalog', 'obspy.imaging', 'obspy.imaging.cm', > 'matplotlib', 'distutils.sysconfig', 'distutils.errors', > 'matplotlib.cbook', 'matplotlib.cbook.deprecation', > 'matplotlib.cbook._backports', 'matplotlib.compat', > 'matplotlib.compat.subprocess', 'matplotlib.rcsetup', > 'matplotlib.testing', 'matplotlib.fontconfig_pattern', 'pyparsing', > 'matplotlib.colors', 'matplotlib._color_data', 'cycler', > 'six.moves.urllib', 'six.moves.urllib.request', 'matplotlib._version', > 'dateutil', 'dateutil._version'] > [ DEBUG] CACHEDIR=/Users/mth/.matplotlib > [ DEBUG] Using fontManager instance from /Users/mth/.matplotlib/ > fontList.json >

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[REL] Matplotlib 2.2.2
by Thomas Caswell March 17, 2018

March 17, 2018

Folks, Happy to announce Matplotlib 2.2.2, the second bug-fix release of the v2.2 LTS series. This release fixes a number of critical bugs from 2.2.0: - restores matplotlib.verbose (fixing embedding in pycharm) - preserve precision when color mapping small portions of data with extreme outliers - fixes saving long movies with ffmpeg - fixes UnbourdLocal error in contour labeling - fixes import failure on python 3.4.0 and 3.4.1 - fixes compile time failures with clang on 32bit platforms - fixes an icon in the Tk backends - fixes several issues with Tables - fixes expanding offset boxes with tight_layout - revert changes to the font caching to avoid a possible bug in backports.lru_cache - numerous docstring and documentation fixes We have reverted the deprecation of `font_manager.TempCache`. Thank you to everyone who submitted bug reports and worked on this! v2.2.1 is tagged, but we do not plan to release / publish to pypi. Tom

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Scaled Secondary Axis that is Slaved to Primary
by Chad Parker March 16, 2018

March 16, 2018

All- I frequently find myself trying to create plots that use a secondary axis to indicate data in a second set of units. For example, I might plot a data set with an x-axis in data number (e.g. the output of an analog to digital converter), and then wish to display the calibrated units on a secondary x-axis (e.g. volts). There are quite a few examples that do this by creating a secondary axis using twiny(), and then setting the limits of the secondary x-axis to the scaled limits of the primary, and possibly setting the ticks to line up as well. import matplotlib.pyplot as plt import numpy as np from scipy.stats import norm f, ax = plt.subplots(1) x_dn = np.arange(4096) y = norm.pdf(x_dn, 2048, 64) v = lambda x: x*5.0/4096 ax.plot(x_dn, y) ax.grid(True) ax_top = ax.twiny() ax_top.grid(True) ax_top.set_xticks([v(x) for x in ax.get_xticks()]) # optional, aligns the grids ax_top.set_xlim([v(x) for x in ax.get_xlim()]) This isn't too painful if you're only doing it once. However, if you subsequently want to change the limits (from the command line) you have to explicitly set the limits of both axes or they will become out of sync (aside: they also can get out of sync if you set the secondary limits before the ticks, because setting the ticks can change the limits!). If you do set the ticks to line up the grids, then you also have to recompute those for the secondary axis. ax.set_xlim([1500, 2500]) # now they're out of sync ax_top.set_xticks([v(x) for x in ax.get_xticks()]) # ticks correct, but in wrong places ax_top.set_xlim([v(x) for x in ax.get_xlim()]) # all's well again. It just seems like there ought to be a better way. I apologize if it's out there and I missed it. Thanks, --Chad

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