Topic: histogram

topics > computer science > data > Group: sequence operations

execution profile
execution tracing
graphs in process control
logging data and events
sequence reduction


A histogram displays a set of buckets which splits a variable's value into ranges, defines subsets of variables, or reflects a quantity's behavior over time. The buckets can be tallied over a whole sequence, a structure, or an environment. Once tallied they can be displayed as a bar graph. For instance an execution histogram could tally the value of the program counter at regular time intervals. Histograms over a sequence reduce the sequence to a set of summary values. (cbb 5/80)
Subtopic: in situ aggregation up

Quote: DTrace's quantize() generates a power-of-two histogram, in situ; for example, frequency of write system calls by size by application [»cantB2_2006]

Subtopic: histogram up

QuoteRef: polsPG_1972 ;;561 histogram function: declared with limits and pocket widths, then a logging function to inc a pocket
Quote: use bargraphs to show how well process variables are maintaining their setpoints [»instrumentcontrol]
Quote: Simscript has an 'accumulate' statement of automatically collecting statistics or a histogram [»simscrip_1971, OK]
QuoteRef: simscrip_1971 ;;222 Tally for time independent variables

Related Topics up

Topic: execution profile (43 items)
Topic: execution tracing (42 items)
Topic: graphs in process control (3 items)
Topic: logging data and events (17 items)
Topic: sequence reduction
(10 items)

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