Gnuplot 5.0.4, on MacOS 10.11.6.
For reasons that are not particularly germane, I am trying to determine the area of a square vs. a circle, given a piece of string of length "x". I have worked it out in simple maths, but I want to plot it. gnuplot> set xtics 0,1,100 gnuplot> plot (x*x)/16, pi * x But no matter what I do, I get a partial graph, no xtics on the left, extending to 10 on the right, with the expected parabola and angled line intersecting at x=0. What I really want to see is the parabola crossing the straight line, around pi * 16. so where have I stuffed up? Thanks. -- Dave Horsfall DTM (VK2KFU) "Those who don't understand security will suffer." ------------------------------------------------------------------------------ _______________________________________________ gnuplot-info mailing list [hidden email] Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info |
On Saturday, 30 July 2016 01:50:40 PM Dave Horsfall wrote:
> Gnuplot 5.0.4, on MacOS 10.11.6. > > For reasons that are not particularly germane, I am trying to determine > the area of a square vs. a circle, given a piece of string of length "x". > I have worked it out in simple maths, but I want to plot it. > > gnuplot> set xtics 0,1,100 > gnuplot> plot (x*x)/16, pi * x > > But no matter what I do, I get a partial graph, no xtics on the left, > extending to 10 on the right, with the expected parabola and angled line > intersecting at x=0. > > What I really want to see is the parabola crossing the straight line, > around pi * 16. so where have I stuffed up? The default range on x is [-10:10], which is what you have. You asked for xtics starting at 0 and going to 100, which you also have. IOW you got just what you asked for. Maybe you intended "set xrange" rather than "set xtics"? ------------------------------------------------------------------------------ _______________________________________________ gnuplot-info mailing list [hidden email] Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info |
On Fri, 29 Jul 2016, Ethan A Merritt wrote:
[ ... ] > > What I really want to see is the parabola crossing the straight line, > > around pi * 16. so where have I stuffed up? > > The default range on x is [-10:10], which is what you have. > You asked for xtics starting at 0 and going to 100, which you also have. > IOW you got just what you asked for. > > Maybe you intended "set xrange" rather than "set xtics"? Bingo! Many thanks. -- Dave Horsfall DTM (VK2KFU) "Those who don't understand security will suffer." ------------------------------------------------------------------------------ _______________________________________________ gnuplot-info mailing list [hidden email] Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info |
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