I tried sudo port sync & then sudo port install pgplot, and still got errors, so I removed the directory where it originally was trying to install it from & retried the install & it appeared to work, but now where do I find pgplot? In which directory did it install? Also, pgplot is only a step toward the final process--I'm trying to compile a c program that uses it and I get this error: kari% gcc labfit2.co.c labfit2.co.c: In function 'main': labfit2.co.c:459: error: 'NPOLAR_FILES' undeclared (first use in this function) labfit2.co.c:459: error: (Each undeclared identifier is reported only once labfit2.co.c:459: error: for each function it appears in.) labfit2.co.c:460: error: 'polar_files' undeclared (first use in this function) labfit2.co.c:463: error: 'NAPOLAR_FILES' undeclared (first use in this function) labfit2.co.c:464: error: 'apolar_files' undeclared (first use in this function) labfit2.co.c:486: error: 'NSTEP' undeclared (first use in this function) labfit2.co.c:488: error: 'INCR' undeclared (first use in this function) which is the error I got before when I just used the pc version of pgplot. Kari