按照官方的說法:Cairo is a vector graphics library with Cross-device output support.
翻譯過來,就是cairo是一個支持多種輸出的向量圖形庫。
具體解釋一下,也就是說,cairo是種畫圖的工具庫,他可以向多種設備上畫圖,比如:
cairo可以輸出到png,可以輸出到pdf,可以輸出到ps,可以輸出到xlib,可以輸出到XCB,可以輸出到win32,以后還要輸出到svg
我們可以展望一下,如果cairo能夠統一linux下所有的畫圖接口,那么,所見所得可能就會成為顯示。
function y_cum = cum2x (x,y, maxlag, nsamp, overlap, flag)
%CUM2X Cross-covariance
% y_cum = cum2x (x,y,maxlag, samp_seg, overlap, flag)
% x,y - data vectors/matrices with identical dimensions
% if x,y are matrices, rather than vectors, columns are
% assumed to correspond to independent realizations,
% overlap is set to 0, and samp_seg to the row dimension.
% maxlag - maximum lag to be computed [default = 0]
% samp_seg - samples per segment [default = data_length]
% overlap - percentage overlap of segments [default = 0]
% overlap is clipped to the allowed range of [0,99].