i. i. i. i. .. ■. »• ». i. ia. ii. it. is. i«. is. i*. it. II* I*, to. at. «a. aa. I.' n. a«, a?. at- i

Fig. 20-3. Sample Plot Generated by Subroutine GRAPH



SPHPLT Spherical grid CalComp plotting routines which generate a perspective drawing of the celestial sphere as seen from any orientation and plot user-specified lines, points, or other characters on the sphere. A sample plot is shown in Fig. 20-4.

CIS T. 0.. BEGINNING OF JON. 13 LAUNCH UINUOM. WFB (JBBCOB) CENTEfl; «=100 . 6= IS BTUTUOEi «= 11.0 . !>=-??.6

CIS T. 0.. BEGINNING OF JON. 13 LAUNCH UINUOM. WFB (JBBCOB) CENTEfl; «=100 . 6= IS BTUTUOEi «= 11.0 . !>=-??.6

Fig. 20-4. Sample Celestial Sphere Plot Generated by Subroutines SPHCNV, SPHGRD, and SPHPLT


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5. Hoover, J. E., T. E. Board, and A. M. Montgomery, Graphic Executive Support System (GESS) User's Guide, Comp. Sc. Corp., CSC/SD-75/6057, Aug. 1975.

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7. Myers, Glenford J., Reliable Software Through Composite Design. New York: Petrocelli-Charter, 1975.

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