def mycalc_create_pn(dict_in):

    # Allocation
    pname_str = {}
    # check if restriction to region exist
    list_allkeys = dict_in.keys()
    if 'lonlat' in list_allkeys:
        dummy = dict_in['lonlat']
        if dummy[0] < 0:
            pn1 = '{:03d}'.format(int(abs(round(dummy[0])))) + 'W'
        elif dummy[0] > 360:
            pn1 = '{:03d}'.format(int(round(dummy[0])-360)) + 'E'
        else:
            pn1 = '{:03d}'.format(int(round(dummy[0]))) + 'E'
        if dummy[1] < 0:
            pn2 = '{:03d}'.format(int(abs(round(dummy[1])))) + 'W'
        elif dummy[1] > 360:
            pn2 = '{:03d}'.format(int(round(dummy[1])-360)) + 'E'
        else:
            pn2 = '{:03d}'.format(int(round(dummy[1]))) + 'E'
        if dummy[2] < 0:
            pn3 = '{:02d}'.format(int(abs(round(dummy[2])))) + 'S'
        else:
            pn3 = '{:02d}'.format(int(round(dummy[2]))) + 'N'
        if dummy[3] < 0:
            pn4 = '{:02d}'.format(int(abs(round(dummy[3])))) + 'S'
        else:
            pn4 = '{:02d}'.format(int(round(dummy[3]))) + 'N'
        pname_str['lonlat'] = '_reg' + pn1 + 'to' + pn2 + pn3 + 'to' + pn4
        del dummy

    del dict_in, list_allkeys
    return pname_str