Re: Plot&2backgroundcolors
- To: mathgroup at smc.vnet.net
- Subject: [mg44334] Re: Plot&2backgroundcolors
- From: "Steve Luttrell" <luttrell at _removemefirst_westmal.demon.co.uk>
- Date: Wed, 5 Nov 2003 10:01:42 -0500 (EST)
- References: <bo7nq2$ads$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
This does what you want. a = 1.234; Plot[Sin[x], {x, 0, Pi}, Prolog -> {RGBColor[1, 1, 0], Rectangle[{0, 0}, {a, a}], RGBColor[0, 1, 0], Rectangle[{a, 0}, {Pi, a}], RGBColor[0, 0, 0]}, Epilog -> {Dashing[{0.02}], RGBColor[1, 0, 0], Thickness[0.01], Line[{{1.234, 0}, {a, 1}}]}, Ticks -> {{{a, ToString[a]}, {Pi, "\[Pi]"}}, Automatic}]; -- Steve Luttrell West Malvern, UK "Roberto Brambilla" <rlbrambilla at cesi.it> wrote in message news:bo7nq2$ads$1 at smc.vnet.net... > Hello, > > I have to plot a function, let it be Sin[x] in (0-pg), then I have a > peculiar abscissa, ex. x=1.234. > I'd like to overlap to a normal grid and frame a vertical line at this > abscissa in same different style > (as dash or color or thickness, etc.) . How can I do it? > How can I have also this value explicit as a tick on the plot? > Then all this would be even better if I could have two background colors > (or gray levels), > before and after the selected abscissa. > > Many thanks in advance, Roberto > > Roberto Brambilla > CESI > Via Rubattino 54 > 20134 Milano > tel +39.02.2125.5875 > fax +39.02.2125.5492 > rlbrambilla at cesi.it > >