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dqe
0.3.13
0.4.15
0.4.14
0.4.13
0.4.12
0.4.11
0.4.10
0.4.9
0.4.8
0.4.7
0.4.6
0.4.5
0.4.4
0.4.3
0.4.2
0.4.1
0.4.0
0.3.25
0.3.24
0.3.23
0.3.22
0.3.21
0.3.20
0.3.19
0.3.18
0.3.17
0.3.16
0.3.15
0.3.14
0.3.13
0.3.12
0.3.11
0.3.10
0.3.9
0.3.8
0.3.7
0.3.6
0.3.5
0.3.4
0.3.3
0.3.2
0.3.1
0.2.2
0.2.1
0.2.0
0.1.36
0.1.35
0.1.34
0.1.33
0.1.22
0.1.21
0.1.20
0.1.10
0.1.9
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src/dqe_hist_stddev.erl
-module(dqe_hist_stddev).
-behaviour(dqe_fun).
-include_lib("mmath/include/mmath.hrl").
-export([spec/0, describe/1, init/1, chunk/1, resolution/2, run/2, help/0]).
-record(state, {}).
init([]) ->
#state{}.
chunk(#state{}) ->
1.
resolution(_Resolution, State) ->
{1, State}.
describe(_y) ->
["stddev()"].
spec() ->
{<<"stddev">>, [histogram], none, metric}.
run([Data], S) ->
R = mmath_bin:from_list([hdr_histogram:stddev(H) || H <- Data]),
{R, S}.
help() ->
<<"Calculates the standard derivation for a histogram.">>.