Here it is.
On Tue, Oct 6, 2009 at 12:19 PM, Jeff Whitaker <jsw...@fastmail.fm> wrote:
> Stephane Raynaud wrote:
>>
>> Hi Jeff,
>>
>> how about allowing units to be set as meters when calling
>> Basemap.drawmapscale ?
>> And maybe adding the keyword "format" for formatting numeric values.
>> That would be interesting when plotting maps with small area.
>>
>> Thanks.
>>
>>
>
> Stephane: I don't use the drawmapscale function very much (it was
> contributed by another user). If you would like to submit a patch, I'd be
> happy to test it and then commit it.
> -Jeff
>
--
Stephane Raynaud
Index: __init__.py
===================================================================
--- __init__.py (révision 7848)
+++ __init__.py (copie de travail)
@@ -3286,7 +3286,8 @@
def drawmapscale(self,lon,lat,lon0,lat0,length,barstyle='simple',\
units='km',fontsize=9,yoffset=None,labelstyle='simple',\
- fontcolor='k',fillcolor1='w',fillcolor2='k',ax=None):
+ fontcolor='k',fillcolor1='w',fillcolor2='k',ax=None,\
+ format='%d'):
"""
Draw a map scale at ``lon,lat`` of length ``length``
representing distance in the map
@@ -3310,6 +3311,8 @@
displayed on the top of the scale bar. For
``simple``, just the units are display on top
and the distance below the scale bar.
+ If equal to False, plot an empty label.
+ format a string formatter to format numeric values
yoffset yoffset controls how tall the scale bar is,
and how far the annotations are offset from the
scale bar. Default is 0.02 times the height of
@@ -3327,17 +3330,15 @@
if self.projection == 'cyl':
raise ValueError("cannot draw map scale for projection='cyl'")
# convert length to meters
+ lenlab = length
if units == 'km':
- lenlab = length
length = length*1000
elif units == 'mi':
- lenlab = length
length = length*1609.344
elif units == 'nmi':
- lenlab = length
length = length*1852
- else:
- msg = "units must be 'km' (kilometers), "\
+ elif units != 'm':
+ msg = "units must be 'm' (meters), 'km' (kilometers), "\
"'mi' (miles) or 'nmi' (nautical miles)"
raise KeyError(msg)
# reference point and center of scale.
@@ -3378,6 +3379,8 @@
labelstr = units
elif labelstyle == 'fancy':
labelstr = units+" (scale factor %4.2f at %s)"%(scalefact,lonlatstr)
+ elif labelstyle == False:
+ labelstr = ''
else:
raise KeyError("labelstyle must be 'simple' or 'fancy'")
# default y offset is 2 percent of map height.
@@ -3423,15 +3426,15 @@
rets.append(self.plot([xc,xc],[ytick,ybottom],color=fontcolor)[0])
rets.append(self.plot([x4,x4],[ytick,ybottom],color=fontcolor)[0])
#label 3 tick marks
- rets.append(ax.text(x1,ytext,'%d' % (0),\
+ rets.append(ax.text(x1,ytext,format % (0),\
horizontalalignment='center',\
verticalalignment='top',\
fontsize=fontsize,color=fontcolor))
- rets.append(ax.text(xc,ytext,'%d' % (0.5*lenlab),\
+ rets.append(ax.text(xc,ytext,format % (0.5*lenlab),\
horizontalalignment='center',\
verticalalignment='top',\
fontsize=fontsize,color=fontcolor))
- rets.append(ax.text(x4,ytext,'%d' % (lenlab),\
+ rets.append(ax.text(x4,ytext,format % (lenlab),\
horizontalalignment='center',\
verticalalignment='top',\
fontsize=fontsize,color=fontcolor))
@@ -3445,7 +3448,7 @@
rets.append(self.plot([x1,x4],[yc,yc],color=fontcolor)[0])
rets.append(self.plot([x1,x1],[yc-yoffset,yc+yoffset],color=fontcolor)[0])
rets.append(self.plot([x4,x4],[yc-yoffset,yc+yoffset],color=fontcolor)[0])
- rets.append(ax.text(xc,yc-yoffset,'%d' % lenlab,\
+ rets.append(ax.text(xc,yc-yoffset,format % lenlab,\
verticalalignment='top',horizontalalignment='center',\
fontsize=fontsize,color=fontcolor))
#put units, scale factor on top
------------------------------------------------------------------------------
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