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plot01
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1997-07-08
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; This batch file defines variables used in examples in
; Chapter 10, "Plotting" of _Using IDL_.
; The following are example data from a fictitious study of Pacific
; Northwest Salmon fisheries. In the examples, these data are used
; to represent fish populations sampled in the years 1967, 1970, and
; from 1975 to 1983. The vectors defined represent the number of
; fish counted, in thousands.
SOCKEYE=[463, 459, 437, 433, 431, 433, 431, 428, 430, 431, 430]
COHO=[468, 461, 431, 430, 427, 425, 423, 420, 418, 421, 420]
CHINOOK=[514, 509, 495, 497, 497, 494, 493, 491, 492, 493, 493]
HUMPBACK=[467, 465, 449, 446, 445, 444, 443, 443, 443, 443, 445]
; Construct an array containing all of the SAT data.
ALLPTS = [[COHO], [SOCKEYE], [HUMPBACK], [CHINOOK]]
; Construct a vector in which each element contains the year of the score.
; Create a variable containing the number of elements in the YEAR vector
; minus one.
YEAR = [1967, 1970, INDGEN(9) + 1975]
N1 = N_ELEMENTS(YEAR) - 1
; Construct a vector of names for lines.
NAMES=['Coho','Sockeye','Humpback', 'Chinook']