High-Frequency Psychological Line (PSY)

Query intraday minute-bar PSY (Psychological Line) for A-share securities via the market data service.PSY = count(close > prev_close, N) / N * 100, measuring market sentiment. Default: N=12, M=6. >75 overbought, <25 oversold.line selects output: 'PSY' (raw) or 'MAPSY' (MA-smoothed).codes: comma-separated security codes (e.g. '600000.SH,000001.SZ').interval: minute bar width — 1/3/5/10/15/30/60.starttime/endtime: 'YYYY-MM-DD HH: MM: SS' intraday range.