[matplotlib-devel] Re : displaying ticklabels on a graph
See enclosed the python file of my code.
The code is not a professional one because i just start python and matplotlib.
Thanks,
Naga
De : John Hunter
À : Clyng11
Cc : matplotlib-devel@lists.sourceforge.net
Envoyé le : Sam 30 avril 2011, 22h 45min 22s
Objet : Re: [matplotlib-devel] displaying ticklabels on a graph
On Wed, Apr 27, 2011 at 4:17 AM, Clyng11 wrote:
>
> I run this code, but labels do not appear under the ticks.
>
> # label the X ticks with years
> self.mpl.canvas.ax.set_xticks(np.arange(len(years))+width/2,
> [int(year) for year in years])
> self.mpl.canvas.ax.set_xticklabels([str(year) for year in years])
>
> I Need an help.
Could you post a complete, free-standing example that we can run that
exposes your problem?
# used to parse files more easily
from __future__ import with_statement
# Numpy module
import numpy as np
# matplotlib colormap module
import matplotlib.cm as cm
# Matplotlib font manager
import matplotlib.font_manager as font_manager
#need for navigation tool bar
#from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as NavigationToolbar
# for command-line arguments
import sys, os
# Qt4 bindings for core Qt functionalities (non-GUI)
from PyQt4 import QtCore
# Python Qt4 bindings for GUI objects
from PyQt4 import QtGui
#from PyQt4.QtGui import QAction, QIcon
from qgis.core import *
# import the MainWindow widget from the converted .ui files
from mplmainwindow import Ui_MplMainWindow
# Initialize Qt resources from file resources.py
import resources
class DoGraphCsv (QtGui.QDialog, Ui_MplMainWindow):
def __init__(self, iface):
QtGui.QDialog.__init__( self )
self.iface = iface
self.setupUi( self )
def initGui(self):
# Create action that will start plugin configuration
self.action = QtGui.QAction(QtGui.QIcon(":/plugins/graphcsvfile/csv_graph.png"), \
"Csv graph...", self.iface.mainWindow())
# self.action = QAction( QCoreApplication.translate( "mnuCsvGraph", "Csv graph", self.iface.mainWindow() )
# self.action.setIcon(QIcon(":/plugins/graphcsvfile/csv_graph.png"))
# self.calcStats.setIcon( QIcon( ":/statist.png" ) )
self.action.setWhatsThis( "Csv file graphic" )
# connect the action to the run method
QtCore.QObject.connect(self.action, QtCore.SIGNAL("triggered()"), self.run)
# Add toolbar button and menu item
self.iface.addToolBarIcon(self.action)
self.iface.addPluginToMenu("&Csv graph...", self.action)
def unload(self):
# Remove the plugin menu item and icon
self.iface.removePluginMenu("&Csv graph...",self.action)
self.iface.removeToolBarIcon(self.action)
# run method that performs all the real work
def run(self):
# create and show the dialog
self.dlg = Ui_MplMainWindow()
# connect the signals with the slots
QtCore.QObject.connect(self.mplactionAdd, QtCore.SIGNAL("clicked()"), self.select_file)
QtCore.QObject.connect(self.mplpushButton, QtCore.SIGNAL("clicked()"), self.validate_entries)
# show the dialog
self.show()
result = self.exec_()
def select_file(self):
"""opens a file select dialog"""
# open the dialog and get the selected file
file = QtGui.QFileDialog.getOpenFileName()
# if a file is selected
if file:
# update the lineEdit text with the selected filename
self.mpllineEdit.setText(file)
def validate_entries(self):
# check to see that all fields have been entered
msg = ''
if self.mpllineEdit.text() == '' or \
self.xlabelEdit.text() == '' or \
self.ylabelEdit.text() == '' or \
self.titleEdit.text() == '':
# ui.lineEdit_min_version_no.text() == '' or \
# ui.lineEdit_menu_text.text() == '' or \
# ui.lineEdit_company_name.text() == '' or \
# ui.lineEdit_email_address.text() == '':
msg = 'All fields are required to create a graph\n'
# try:
#flt = float(str(ui.lineEdit_version_no.text()))
#flt = float(str(ui.lineEdit_min_version_no.text()))
# except:
# msg += 'Version numbers must be numeric'
# if msg != '':
QtGui.QMessageBox.warning(self, "Missing Information", msg)
else:
self.plot_csvfile()
def plot_csvfile(self):
width = .6
# open CSV file
with open(self.mpllineEdit.text()) as f:
# read the first line, splitting the years
years = map(int, f.readline().split(',')[1:])
# we prepare the dtype for exacting data; it's made of:
# <1 string field>
dtype = [('continents', 'S16')] + [('', np.int32)]*len(years)
# we load the file, setting the delimiter and the dtype above
y = np.loadtxt(f, delimiter=',', dtype=dtype)
# "map" the resulting structure to be easily accessible:
# the first column (made of str
[matplotlib-devel] Re : displaying ticklabels on a graph
Also enclosed the csv file I use. I work with Qt4 and Quantum GIS. Thanks, Naga De : John Hunter À : Clyng11 Cc : matplotlib-devel@lists.sourceforge.net Envoyé le : Sam 30 avril 2011, 22h 45min 22s Objet : Re: [matplotlib-devel] displaying ticklabels on a graph On Wed, Apr 27, 2011 at 4:17 AM, Clyng11 wrote: > > I run this code, but labels do not appear under the ticks. > > # label the X ticks with years > self.mpl.canvas.ax.set_xticks(np.arange(len(years))+width/2, > [int(year) for year in years]) > self.mpl.canvas.ax.set_xticklabels([str(year) for year in years]) > > I Need an help. Could you post a complete, free-standing example that we can run that exposes your problem? Continent,1950,1975,2000,2010,2025,2050 Africa,227270,418765,819462,1033043,1400184,1998466 Asia,1402887,2379374,3698296,4166741,4772523,5231485 Europe,547460,676207,726568,732759,729264,691048 Latin America,167307,323323,521228,588649,669533,729184 Northern America,171615,242360,318654,351659,397522,448464 Oceania,12807,21286,31160,35838,42507,51338 -- WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
