File: %25hm_median.sci

package info (click to toggle)
scilab 2.6-4
  • links: PTS
  • area: non-free
  • in suites: woody
  • size: 54,632 kB
  • ctags: 40,267
  • sloc: ansic: 267,851; fortran: 166,549; sh: 10,005; makefile: 4,119; tcl: 1,070; cpp: 233; csh: 143; asm: 135; perl: 130; java: 39
file content (28 lines) | stat: -rw-r--r-- 588 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
function x=%hm_median(m,d)
if argn(2)==1 then
  x=median(m.entries)
  return
end
dims=m.dims;
N=size(dims,'*');
p1=prod(dims(1:d-1));// step to build one vector on which median is applied
p2=p1*dims(d);//step for beginning of next vectors
ind=(0:p1:p2-1)';// selection for building one vector
deb=(1:p1);
I=ind*ones(deb)+ones(ind)*deb 

ind=(0:p2:prod(dims)-1);
I=ones(ind).*.I+ind.*.ones(I)

x=median(matrix(m.entries(I),dims(d),-1),1)
dims(d)=1
if d==N then
  dims=dims(1:$)
else
  dims(d)=1
end
if size(dims,'*')==2 then 
  x=matrix(x,dims(1),dims(2))
else
  x=hypermat(dims,x(:))
end