matplotlib lat and lon formatters

latlonformatters.py

# Format axes for lat and lon
ax.xaxis.set_major_locator(ticker.MultipleLocator(base=2./60.))
ax.yaxis.set_major_locator(ticker.MultipleLocator(base=2./60.))
def latformatter(x, pos):
    'The two args are the value and tick position'
    if x<0:
        x=-x
        minus=True
    else:
        minus=False
    degrees = np.floor(x)
    minutes = (x-degrees)*60.
    if minus:
        hem = 'S'
    else:
        hem='N'
    if minutes==0.:
        print '%d %s %d' % (degrees,hem,pos)
        return '%d$^o$ %s' % (degrees,hem)
    else:
        if pos>1:
            return "%1.1f'" % (minutes)
        else:
            return r'%d$^o$ %s %1.1f' % (degrees,hem,minutes)
def lonformatter(x, pos):
    'The two args are the value and tick position'
    if x<0:
        x=-x
        minus=True
    else:
        minus=False
    degrees = np.floor(x)
    minutes = (x-degrees)*60.
    if minus:
        hem = 'W'
    else:
        hem='E'
    
    if minutes==0.:
        print '%d %s %d' % (degrees,hem,pos)
        return '%d$^o$ %s' % (degrees,hem)
    else:
        if pos>1:
            return "%1.1f'" % (minutes)
        else:
            return r'%d$^o$ %s %1.1f' % (degrees,hem,minutes)
ax.xaxis.set_major_formatter(ticker.FuncFormatter(lonformatter))
ax.yaxis.set_major_formatter(ticker.FuncFormatter(latformatter))