help in making a cumulative histogram, histc or accumarray?

All,

I have some data that I would like to create a cumulative histogram of. The bins I would like to use are like

bins=[0.2 15 0.4 15 0.6 15 0.8 15 1 15 1.2 15 1.4 15 1.6 15 1.8 15 2 15];

and a section of my data looks like

data = [0.072
0.085
0.118
0.200
0.325
0.527
0.823
1.193
1.553
1.822
1.952
1.907
1.707
1.468
1.287
1.200
1.138
1.038
0.898
0.778
0.667
0.599
0.563
0.511
0.434
0.356
0.300
0.266
0.247
0.216
0.199
0.183
0.165
0.131
0.081
0.058
0.051
0.037
0.022
0.019
0.032
0.034
0.034
0.034
0.033
0.020
0.017
0.016
0.017
0.017
0.003];

Given that the bins are non monotonically decreasing/increasing, accumarray and histc throw up errors, does anyone know how I might make this kind of cumulative histogram?

Thanks,

Jim

Answer 1

[Walter Roberson]

ubins = unique(bins);
bar( ubins, cumsum( histc( data, ubins ) ) );

[Jim O'Doherty]

excellent, thanks for your help. I was lacking the cumsum part.

Jim

Answer 2

[Image Analyst]

Why can't you just sort your bins and then pass them into histc. But you didn't specify if your bins were bin centers or bin edges.