<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Charles,<div class=""><br class=""></div><div class="">I just checked with the programmer and he's happy let wider information out about his plotting application, Graf. It's a proper Mac app, not a macport install. Sorry, no manual at present but the help file is useful: <a href="http://miocene.anu.edu.au/Graf" class="">miocene.anu.edu.au/Graf</a></div><div class=""><br class=""></div><div class="">It's a phenomenal little program, and among many other things makes publication-ready PDF plots.</div><div class=""><br class=""></div><div class="">DN</div><div class=""><br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><div class="">__________<br class="">Dr David C Nicholls</div><div class="">Research School of Astronomy & Astrophysics<br class="">Mt Stromlo Observatory</div><div class="">Institute for Advanced Studies<br class="">Australian National University</div></div><div class=""><br class=""></div></div>
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<br class=""><div><blockquote type="cite" class=""><div class="">On 11 Jan 2016, at 1:57 PM, Charles Phillips <<a href="mailto:charles@spaceflightresearch.net" class="">charles@spaceflightresearch.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class=""><p class="">All -</p><p class="">This is probably a simple question to answer, but I have not stumbled across the answer yet. </p><p class="">I have installed GPredict (satellite tracking program) on a number of Mac computers (starting with my Powerbook G4 and most lately on my Mac Mini and my MacBook Pro) and have been looking for a program that would easily allow me to plot orbital parameters. I follow satellites. </p><p class="">Right now I use Numbers for some, and have struggled with Excel. I need a flexible program that allows me to enter some columns of data (perigee, apogee, inclination, etc) and graph them again time of the orbital description (I use Two Line Element sets from the U.S. Air Force). </p><p class="">I looked in the "Math" category and have not managed to find anything. MacPorts does not have a way to search for "graphing utilities" that I have found?? </p><p class="">I briefly tried to use a neat program called Plot2 that I ran across but I could not get any support. </p><p class="">There must be a ported Unix application out there that I just have not run across yet??</p><div class="io-ox-signature"><p class=""><strong class="">Charles Phillips</strong><br class="">Spaceflight Research, LLC<br class="">Houston, Texas<br class="">713-882-4578</p></div></div>
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