gplan@husc6.harvard.edu (George A. Planansky) (08/18/89)
I want to run two programs, minmax and plot, thusly: minmax < 2D-data | plot > lpr such that minmax sets the environmental variables DMIN and DMAX, which are read by plot before it takes action. I can use putenv and getenv to change the set of environmental variables seen by minmax, but this does not change the environment that plot sees. 1) how can I get minmax to change the variables that plot will see? 2) need I do something to ensure that plot does not start filtering the data stream BEFORE minmax has updated the variables? I'd like to use the environment to pass these values, because it would be easy to get the values. If this "can't be done", is there some other "easy" way? I'd like to avoid using files, but if this is the way to go, I shall. Please mail replies to: gplan@ra.umb.edu . Thanks. George Planansky (617) 547-6207 Atmosphere Environment Research, Cambridge MA