β Scribed by K.W. Brown; N.J. Rosenberg
No coin nor oath required. For personal study only.
Multichannel automatic data recorders have given meteorologists the opportunity to measure many parameters rapidly. The greatly increased numbers of data available have in turn created a necessity for effective computational and analytical techniques. We have developed a computer program 2 to be used in conjunction with the Calcomp 3 Model 750 Plotter and the Model 563 Plot Table to plot meteorological data.
The body of the program, entitled TIMEPLOT, is written in FORTRAN IV. In order to minimize the run time required, the input and output subroutines are written in F level COBOL. The program has been run on the IBM 7040 and the IBM 360 Models 50 and 65 with release 14 MVT operating system. Time, which may range from 1 hour to 16 days, is plotted on the abscissa. The program computes the intervals at which labels are placed and determines the required annotation. Data may be plotted as frequently as one observation per minute or as infrequently as one observation per day. Any parameter may be represented on the ordinate. The range of numerical values associated with the dependent variable is virtually unlimited.
A single parameter may be plotted over the selected time interval. Several parameters may be superimposed upon each other. Combinations of these options may be arranged one above the other on a single time axis (see Fig. l).
The program was designed with features to facilitate the plotting of microclimatic and micrometeorological data. These features include a special energy flux axis (shown at the top of Fig. l), provisions for wind direction (shown near the bottom of Fig.l) and the capability of back spacing data which is averaged or integrated between recording intervals, as is wind speed (shown at the bottom of Fig.l). It is flexible enough, however, to be used for plotting other types of time t Published with the approval of the Director as Journal Paper No. 2508, Journal Series, Nebraska Agricultural Experiment Station. The program listing, instructions and examples are available as University of Nebraska, College of Agriculture and Home Economics, M. P. 23 from the Dept. of Information. The program is available on cards or magnetic tape on application to Dr.
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