def svg_text(pos, text, font_size=12, align_right=False):
    """Return svg code for text."""
    x, y = pos.astype(int)
    if align_right:
        return """<text text-anchor="end" x="{}" y="{}" font-size="{}">{}</text>"""\
            .format(x, y, font_size, str(text))
    else:
        return """<text x="{}" y="{}" font-size="{}">{}</text>"""\
            .format(x, y, font_size, str(text))