From 20c39b534394bc4d2e6f4cd6cf26e89d88667e8e Mon Sep 17 00:00:00 2001
From: "fabrizio.benedetti.82" <devnull@localhost>
Date: Thu, 11 Feb 2010 13:20:54 +0000
Subject: [PATCH] Scale of axis are now in engineering format.

---
 hooke.py    | 11 ++++++++++
 libhooke.py | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)

diff --git a/hooke.py b/hooke.py
index 6046847..6bceecb 100755
--- a/hooke.py
+++ b/hooke.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
 
 '''
 HOOKE - A force spectroscopy review & analysis tool
@@ -260,6 +261,11 @@ class MainWindow(wx.Frame):
         self.figures=[control.get_figure() for control in self.controls]
         self.axes=[figure.gca() for figure in self.figures]
 
+	for i in range(len(self.axes)):
+	  self.axes[i].xaxis.set_major_formatter(EngrFormatter())
+	  self.axes[i].yaxis.set_major_formatter(EngrFormatter(2))
+
+
         self.cpanels[1].Hide()
         self.mainpanel.splitter.Initialize(self.cpanels[0])
 
@@ -540,6 +546,11 @@ class MainWindow(wx.Frame):
                 ylim=self.axes[dest].get_ylim()        
                 self.axes[dest].set_ylim((ylim[1],ylim[0])) 
 
+	    for i in range(len(self.axes)):
+	      self.axes[i].xaxis.set_major_formatter(EngrFormatter())
+	      self.axes[i].yaxis.set_major_formatter(EngrFormatter(2))
+
+
             self.controls[dest].draw()
 
 
diff --git a/libhooke.py b/libhooke.py
index f668635..5da0508 100755
--- a/libhooke.py
+++ b/libhooke.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
 
 '''
 libhooke.py
@@ -24,6 +25,8 @@ import xml.dom.minidom
 import os
 import string
 import csv
+from matplotlib.ticker import ScalarFormatter
+
 
 HOOKE_VERSION=['0.8.3_devel', 'Seinei', '2008-04-16']
 WX_GOOD=['2.6','2.8'] 
@@ -251,6 +254,62 @@ class HookeConfig:
         pass    
 
 
+class EngrFormatter(ScalarFormatter):
+    """A variation of the standard ScalarFormatter, using only multiples of 
+three
+in the mantissa. A fixed number of decimals can be displayed with the optional 
+parameter `ndec` . If `ndec` is None (default), the number of decimals is 
+defined
+from the current ticks.
+    """
+    def __init__(self, ndec=None, useOffset=True, useMathText=False):
+        ScalarFormatter.__init__(self, useOffset, useMathText)
+        if ndec is None or ndec < 0:
+            self.format = None
+        elif ndec == 0:
+            self.format = "%d"
+        else:
+            self.format = "%%1.%if" % ndec
+    #........................
+
+    def _set_orderOfMagnitude(self, mrange):
+	    """Sets the order of magnitude."""        
+	    locs = numpy.absolute(self.locs)
+	    if self.offset: 
+		oom = numpy.floor(numpy.log10(mrange))
+	    else:
+		if locs[0] > locs[-1]: 
+		    val = locs[-1]
+		else: 
+		    val = locs[0]
+		if val == 0: 
+		    oom = 0
+		else: 
+		    oom = numpy.floor(numpy.log10(val))
+	    if oom <= -3:
+		self.orderOfMagnitude = 3*(oom//3)
+	    elif oom <= -1:
+		self.orderOfMagnitude = -3
+	    elif oom >= 4:
+		self.orderOfMagnitude = 3*(oom//3)
+	    else:
+		self.orderOfMagnitude = 0
+
+
+    #........................
+    def _set_format(self):
+        """Sets the format string to format all ticklabels."""
+        # set the format string to format all the ticklabels
+        locs = (numpy.array(self.locs)-self.offset) /  10**self.orderOfMagnitude+1e-15
+        sigfigs = [len(str('%1.3f'% loc).split('.')[1].rstrip('0')) \
+                   for loc in locs]
+        sigfigs.sort()
+        if self.format is None:
+            self.format = '%1.' + str(sigfigs[-1]) + 'f'
+        if self._usetex or self._useMathText: self.format = '$%s$'%self.format
+
+
+
 class ClickedPoint:
     '''
     this class defines what a clicked point on the curve plot is
-- 
2.26.2