Sherry Christian

当我带着一个有边框的眼镜时，精确度明显下降啦

var data = [ [308.2985565973347, 308.2985565973347, 308.2985565973347, 308.2985565973347], [306.8843430349616, 306.8843430349616, 306.8843430349616, 306.8843430349616], [306.8843430349616, 306.8843430349616, 306.8843430349616, 306.8843430349616], [306.17723625377505, 306.17723625377505, 306.17723625377505, 306.17723625377505], ] numeric.svd(data) result has NaN