def __get_tile_group_dim(self, traces):
    xs = [t['x'] for t in traces]
    ys = [t['y'] for t in traces]
    self.xmin = min(xs)
    self.xmax = max(xs)
    self.ymin = min(ys)
    self.ymax = max(ys)
    self.xdim = ((self.xmax - self.xmin) + 1)
    self.ydim = ((self.ymax - self.ymin) + 1)
    return
def __get_tile_group_dim(self, traces):
    xs = [t['x'] for t in traces]
    ys = [t['y'] for t in traces]
    self.xmin = min(xs)
    self.xmax = max(xs)
    self.ymin = min(ys)
    self.ymax = max(ys)
    self.xdim = ((self.xmax - self.xmin) + 1)
    self.ydim = ((self.ymax - self.ymin) + 1)
    return