Hi Paul, mp_graticule should work. The first 3 arguments control lines of longitude (vertical) and the next 3 control lines of latitude. Send it " " for the first 3 arguments. That'll skip making any lines of longitude, and you can then just draw one line of latitude use etopo20Or whatever your upper limit of Y is. The 5 is arbitrary, delta-y. You can also give it a " ". And I've sent in pen 7 which is a dark line, which I think looks nice, but you could skip that for the default thin black line. Ansley Paul Young wrote: Hi all, |