plots.py 文件源码

def setDrawer(self, *args):
        if args:
            # divide the arguments into qualifieds or unqualifieds
            (qualifieds, unqualifieds)  =  \
                hvutil.partition(operator.methodcaller('group', 'yAx'),
                                 filter(operator.truth,
                                        map(re.compile(r"^((?P<yAx>[^:]+):)?(?P<method>lines|points|both)$", re.I).match, args)))
            # Make sure that every entry matched
            if (len(qualifieds)+len(unqualifieds))!=len(args):
                raise RuntimeError, "Invalid draw method(s) specified; use Lines, Points or Both"
            # Depending in which one is the empty list we do things
            # and we complain loudly + bitterly if they're both non-empty ...
            if qualifieds and not unqualifieds:
                for qual in qualifieds:
                    ax                    = qual.group('yAx')
                    if ax not in self.yAxis:
                        raise RuntimeError, "The current plot type has no panel for {0}".format( ax )
                    yIdx                  = self.yAxis.index( ax  )
                    dm                    = qual.group('method').capitalize()
                    self.drawers[yIdx]    = self.drawDict[ dm ]
                    self.drawMethod[yIdx] = dm
            elif unqualifieds and not qualifieds:
                # all unqualified. Only acceptable: 1 unqualified or nYAxis unqualifieds
                if len(unqualifieds)!=len(self.yAxis) and len(unqualifieds)!=1:
                    raise RuntimeError, "Incorrect number of drawing methods supplied for plot type (either 1 or {0})".format(len(self.yAxis))
                # if there's just one, replicate to len yAxis
                methods = unqualifieds if len(unqualifieds)==len(self.yAxis) else [unqualifieds[0]] * len(self.yAxis)
                for (idx, method) in enumerate(methods):
                    dm                   = method.group('method').capitalize()
                    self.drawers[idx]    = self.drawDict[ dm  ]
                    self.drawMethod[idx] = dm
            else:
                raise RuntimeError, "You cannot mix qualified axis drawing methods with unqualified ones" 
        return " ".join(map(":".join, zip(self.yAxis, self.drawMethod)))

    # want to fix the scale of the axes?
    #  can give either:
    #     Scaling.auto_global, Scaling.auto_local or [<min>, <max>]
    # There's no asserts being done - you'll find out at runtime if
    # it's been set to something "the system" doesn't grok ...