1 | function [AvgRate, N] = measrate(family, elem, T); |
---|
2 | %MEASRATE - noise on channels |
---|
3 | %[AvgRate, N] = measrate(Family, List, T); |
---|
4 | % |
---|
5 | % INPUTS |
---|
6 | % 1. Family = Family name ('BPMx', 'HCOR', etc.) |
---|
7 | % 2. List = Device list or element list [column vector] {default, entire family} |
---|
8 | % 3. T = Time interval to check sampling rate [seconds] |
---|
9 | % |
---|
10 | % OUTPUTS |
---|
11 | % 1. AvgRate = Average sample rate over T seconds perios |
---|
12 | % 2. N = Number of observed transitions |
---|
13 | % |
---|
14 | % NOTES |
---|
15 | % 1.This method only works on noisy channels! |
---|
16 | |
---|
17 | % |
---|
18 | % Written by Gregory J. Portmann, ALS |
---|
19 | |
---|
20 | if nargin == 0, |
---|
21 | error('Need atleast one input: family'); |
---|
22 | end |
---|
23 | |
---|
24 | if nargin == 1, |
---|
25 | elem = getlist(family); |
---|
26 | end |
---|
27 | |
---|
28 | if isempty(elem) |
---|
29 | elem = getlist(family); |
---|
30 | end |
---|
31 | |
---|
32 | |
---|
33 | if (size(elem,2) == 2) |
---|
34 | elem = dev2elem(family, elem); |
---|
35 | end |
---|
36 | |
---|
37 | if nargin <= 2, |
---|
38 | T = 2; |
---|
39 | end |
---|
40 | |
---|
41 | OneAtATimeFlag = 0; |
---|
42 | |
---|
43 | if OneAtATimeFlag |
---|
44 | DelT = .005; |
---|
45 | else |
---|
46 | if length(elem)>50 |
---|
47 | DelT = .03; |
---|
48 | else |
---|
49 | DelT = .02; |
---|
50 | end |
---|
51 | end |
---|
52 | if length(T) == 1 |
---|
53 | tin = 0:DelT:T; |
---|
54 | else |
---|
55 | tin = T; |
---|
56 | end |
---|
57 | |
---|
58 | |
---|
59 | disp([' Checking the data rate for channel or family: ', family]); |
---|
60 | disp([' Collection data for ',num2str(tin(end)),' seconds at a sample rate of ',num2str(1/mean(diff(tin))),' Hertz.']); pause(0); |
---|
61 | disp([' Channels must be noisy for this method to work.']); |
---|
62 | if OneAtATimeFlag |
---|
63 | |
---|
64 | for i = 1:size(elem,1) |
---|
65 | % Collect data |
---|
66 | [a, t] = getam(family, elem(i,1), 1, tin); |
---|
67 | |
---|
68 | adiff = abs(diff(a)); |
---|
69 | I = find(adiff>0); |
---|
70 | |
---|
71 | if size(I,2) < 3 |
---|
72 | disp(' '); disp(' WARNING: Less than 3 update. Increase time span or channel not noisy enough.'); disp(' '); |
---|
73 | end |
---|
74 | |
---|
75 | if isempty(I) |
---|
76 | N(i,1) = 0; |
---|
77 | AvgRate(i,1) = 0; |
---|
78 | else |
---|
79 | t = t(I); |
---|
80 | tdiff = diff(t); |
---|
81 | |
---|
82 | N(i,1) = size(I,2)-1; |
---|
83 | AvgRate(i,1) = 1/mean(tdiff); |
---|
84 | end |
---|
85 | |
---|
86 | Dev=elem2dev(family,elem(i)); |
---|
87 | fprintf(' %s(%2d,%2d), Sample Rate=%5.2f Hz, Number of Samples=%d, Number of New Data Points=%d\n', family, Dev(1), Dev(2), AvgRate(i,1), length(t),N(i,1)); |
---|
88 | end |
---|
89 | else |
---|
90 | % Collect data using EPICs |
---|
91 | getam(family); % just to connect to channels |
---|
92 | [a, t] = getam(family, [], 1, tin); |
---|
93 | |
---|
94 | %figure(3) |
---|
95 | %plot(tin,t) |
---|
96 | |
---|
97 | for i = 1:size(elem,1) |
---|
98 | adiff = abs(diff(a(i,:))); |
---|
99 | I = find(adiff>0); |
---|
100 | |
---|
101 | if size(I,2) < 3 |
---|
102 | disp(' '); disp([' WARNING: ',family,'(',num2str(i),') less than 3 update. Increase time span or channel not noisy enough.']); disp(' '); |
---|
103 | end |
---|
104 | |
---|
105 | if isempty(I) |
---|
106 | N(i,1) = 0; |
---|
107 | AvgRate(i,1) = 0; |
---|
108 | else |
---|
109 | t1 = t(I); |
---|
110 | tdiff = diff(t1); |
---|
111 | |
---|
112 | N(i,1) = size(I,2)-1; |
---|
113 | AvgRate(i,1) = 1/mean(tdiff); |
---|
114 | end |
---|
115 | |
---|
116 | Dev = elem2dev(family,elem(i)); |
---|
117 | fprintf(' %s(%2d,%2d), Sample Rate=%5.2f Hz, Number of Samples=%d, Number of New Data Points=%d\n', family, Dev(1), Dev(2), AvgRate(i,1), length(t),N(i,1)); |
---|
118 | end |
---|
119 | end |
---|