flix

 floating point index - interpolates data in case of non-integer indices

 Y=flix(D,x)
   FLIX returns Y=D(x) if x is an integer 
   otherwise D(x) is interpolated from the neighbors D(ceil(x)) and D(floor(x)) 
 
 Applications: 
 (1)  discrete Dataseries can be upsampled to higher sampling rate   
 (2)  transformation of non-equidistant samples to equidistant samples
 (3)  [Q]=flix(sort(D),q*(length(D)+1)) calculates the q-quantile of data series D   

 FLIX(D,x) is the same as INTERP1(D,X,'linear'); Therefore, FLIX might
 become obsolete in future. 

 see also: HIST2RES, Y2RES, PLOTCDF, INTERP1