[GRASS-SVN] r62585 - grass/trunk/gui/wxpython/dbmgr
svn_grass at osgeo.org
svn_grass at osgeo.org
Mon Nov 3 13:29:56 PST 2014
Author: martinl
Date: 2014-11-03 13:29:56 -0800 (Mon, 03 Nov 2014)
New Revision: 62585
Modified:
grass/trunk/gui/wxpython/dbmgr/base.py
Log:
wxGUI/dbmgr: implement FieldStatistics
Modified: grass/trunk/gui/wxpython/dbmgr/base.py
===================================================================
--- grass/trunk/gui/wxpython/dbmgr/base.py 2014-11-03 19:57:58 UTC (rev 62584)
+++ grass/trunk/gui/wxpython/dbmgr/base.py 2014-11-03 21:29:56 UTC (rev 62585)
@@ -14,6 +14,7 @@
- base::TableListCtrl
- base::LayerListCtrl
- base::LayerBook
+ - base::FieldStatistics
.. todo::
Implement giface class
@@ -39,6 +40,7 @@
import wx
import wx.lib.mixins.listctrl as listmix
import wx.lib.flatnotebook as FN
+import wx.lib.scrolledpanel as scrolled
import grass.script as grass
@@ -77,7 +79,8 @@
self.layer = layer
self.pages = pages
- self.fieldCalc = None
+ self.fieldCalc = None
+ self.fieldStats = None
self.columns = {} # <- LoadData()
self.sqlFilter = {}
@@ -411,8 +414,8 @@
self.popupID11 = wx.NewId()
self.popupID12 = wx.NewId()
self.popupID13 = wx.NewId()
+ self.popupID14 = wx.NewId()
-
popupMenu.Append(self.popupID1, text = _("Sort ascending"))
popupMenu.Append(self.popupID2, text = _("Sort descending"))
popupMenu.AppendSeparator()
@@ -420,7 +423,9 @@
popupMenu.AppendMenu(self.popupID3, _("Calculate (only numeric columns)"),
subMenu)
popupMenu.Append(self.popupID13, text = _("Field calculator"))
-
+ popupMenu.AppendSeparator()
+ popupMenu.Append(self.popupID14, text = _("Statistics"))
+
if not self.pages['manageTable']:
popupMenu.AppendSeparator()
self.popupID14 = wx.NewId()
@@ -434,6 +439,7 @@
if not self.dbMgrData['editable'] or \
self.columns[self.GetColumn(self._col).GetText()]['ctype'] not in (types.IntType, types.FloatType):
popupMenu.Enable(self.popupID3, False)
+ popupMenu.Enable(self.popupID14, False)
subMenu.Append(self.popupID4, text = _("Area size"))
subMenu.Append(self.popupID5, text = _("Line length"))
@@ -447,7 +453,8 @@
self.Bind (wx.EVT_MENU, self.OnColumnSortAsc, id = self.popupID10)
self.Bind (wx.EVT_MENU, self.OnColumnSortDesc, id = self.popupID2)
- self.Bind(wx.EVT_MENU, self.OnFiledCalculator, id = self.popupID13)
+ self.Bind(wx.EVT_MENU, self.OnFieldCalculator, id = self.popupID13)
+ self.Bind(wx.EVT_MENU, self.OnFieldStatistics, id = self.popupID14)
if not self.pages['manageTable']:
self.Bind(wx.EVT_MENU, self.OnAddColumn, id = self.popupID14)
@@ -524,7 +531,7 @@
info.m_text = self.GetColumn(column).GetText()
self.SetColumn(column, info)
- def OnFiledCalculator(self, event):
+ def OnFieldCalculator(self, event):
"""Calls SQLBuilderUpdate instance"""
if not self.fieldCalc:
self.fieldCalc = SQLBuilderUpdate(parent = self, id = wx.ID_ANY,
@@ -535,6 +542,20 @@
else:
self.fieldCalc.Raise()
+ def OnFieldStatistics(self, event):
+ """Calls FieldStatistics instance"""
+ if not self.fieldStats:
+ self.fieldStats = FieldStatistics(parent = self, id = wx.ID_ANY)
+ self.fieldStats.Show()
+ else:
+ self.fieldStats.Raise()
+
+ selLayer = self.dbMgrData['mapDBInfo'].layers[self.layer]
+ self.fieldStats.Update(driver = selLayer['driver'],
+ database = selLayer['database'],
+ table = selLayer['table'],
+ column = self.GetColumn(self._col).GetText())
+
def OnAddColumn(self, event):
"""Add column into table"""
table = self.dbMgrData['mapDBInfo'].layers[self.layer]['table']
@@ -3360,3 +3381,108 @@
self.mapDBInfo = self.parentDialog.dbMgrData['mapDBInfo']
event.Skip()
+
+class FieldStatistics(wx.Frame):
+ def __init__(self, parent, id=wx.ID_ANY,
+ style = wx.DEFAULT_FRAME_STYLE, **kwargs):
+ """Dialog to display and save statistics of field stats
+ """
+ self.parent = parent
+ wx.Frame.__init__(self, parent, id, style = style, **kwargs)
+ self.SetTitle(_("Field statistics"))
+
+ self.sp = scrolled.ScrolledPanel(parent=self, id=wx.ID_ANY, size=(300, 200),
+ style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER, name="Statistics" )
+ self.text = wx.TextCtrl(parent=self.sp, id=wx.ID_ANY, style=wx.TE_MULTILINE|wx.TE_READONLY)
+ self.text.SetBackgroundColour("white")
+
+ # buttons
+ self.btnClipboard = wx.Button(self, id = wx.ID_COPY)
+ self.btnClipboard.SetToolTipString(_("Copy statistics the clipboard (Ctrl+C)"))
+ self.btnCancel = wx.Button(self, wx.ID_CLOSE)
+ self.btnCancel.SetDefault()
+
+ # bindings
+ self.btnCancel.Bind(wx.EVT_BUTTON, self.OnClose)
+ self.btnClipboard.Bind(wx.EVT_BUTTON, self.OnCopy)
+
+ self._layout()
+
+ def _layout(self):
+ sizer = wx.BoxSizer(wx.VERTICAL)
+ txtSizer = wx.BoxSizer(wx.VERTICAL)
+ btnSizer = wx.BoxSizer(wx.HORIZONTAL)
+
+ txtSizer.Add(item = self.text, proportion = 1,
+ flag = wx.EXPAND|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 5)
+
+ self.sp.SetSizer(txtSizer)
+ self.sp.SetAutoLayout(True)
+ self.sp.SetupScrolling()
+
+ sizer.Add(item = self.sp, proportion = 1, flag = wx.GROW |
+ wx.LEFT | wx.RIGHT | wx.BOTTOM, border = 3)
+
+ line = wx.StaticLine(parent = self, id = wx.ID_ANY,
+ size = (20, -1), style = wx.LI_HORIZONTAL)
+ sizer.Add(item = line, proportion = 0,
+ flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 3)
+
+ # buttons
+ btnSizer.Add(item = self.btnClipboard, proportion = 0,
+ flag = wx.ALIGN_LEFT | wx.ALL, border = 5)
+ btnSizer.Add(item = self.btnCancel, proportion = 0,
+ flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)
+ sizer.Add(item = btnSizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)
+
+ self.SetSizer(sizer)
+ sizer.Fit(self)
+
+ def OnCopy(self, event):
+ """!Copy the statistics to the clipboard
+ """
+ stats = self.text.GetValue()
+ rdata = wx.TextDataObject()
+ rdata.SetText(stats)
+
+ if wx.TheClipboard.Open():
+ wx.TheClipboard.SetData(rdata)
+ wx.TheClipboard.Close()
+
+ def OnClose(self, event):
+ """!Button 'Close' pressed
+ """
+ self.Close(True)
+
+ def Update(self, driver, database, table, column):
+ """!Update statistics for given column
+
+ :param: column column name
+ """
+ fd, sqlFilePath = tempfile.mkstemp(text=True)
+ sqlFile = open(sqlFilePath, 'w')
+ stats = ['count', 'min', 'max', 'avg', 'sum']
+ for fn in stats:
+ sqlFile.write('select %s(%s) from %s;%s' % (fn, column, table, os.linesep))
+ sqlFile.close()
+
+ dataStr = RunCommand('db.select',
+ parent = self.parent,
+ read = True,
+ flags='c',
+ input = sqlFilePath,
+ driver = driver,
+ database = database)
+ if not dataStr:
+ return
+ dataLines = dataStr.splitlines()
+ if len(dataLines) != len(stats):
+ GError(parent = self.parent,
+ message = _("Unable to calculte statistics. "
+ "Invalid number of lines %d (should be %d).") % (len(dataLines), len(stats)))
+
+ self.SetTitle(_("Field statistics <%s>") % column)
+ self.text.Clear()
+ for idx in range(len(stats)):
+ self.text.AppendText('%s: %s\n' % (stats[idx], dataLines[idx]))
+
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