Re: Adding coloured Polygon to a BarChart

*To*: mathgroup at smc.vnet.net*Subject*: [mg83996] Re: Adding coloured Polygon to a BarChart*From*: "David Park" <djmpark at comcast.net>*Date*: Thu, 6 Dec 2007 02:48:34 -0500 (EST)*References*: <fj65e2$fnd$1@smc.vnet.net>

Your only problem was that you put an extra level of Graphics in the Epilog list. The following works: BarChart[{1, 2, 3}, Epilog -> {Style[Text["First", {1, 2}, {0, -1}], 12, Red, Bold], {Red, Polygon[{{1.25, 2}, {1.5, 2}, {1.5, 2.25}, {1.25, 2.25}}]}}] But Epilog is a little inconvenient. If you want to add many things Epilog becomes the tail that wags the dog. And suppose you wanted to add a curve to the plot? With the Presentations package all elements are combined in one drawing statement. Here is a bar chart with a curve and your extra label and polygon. Needs["Presentations`Master`"] Draw2D[ {BarChart[{1, 4, 9}] // DrawGraphics, Style[Text["First", {1, 2}, {0, -1}], 12, Red, Bold], Red, Polygon[{{1.25, 2}, {1.5, 2}, {1.5, 2.25}, {1.25, 2.25}}], Draw[x^2, {x, 0, 3.2}]}, AspectRatio -> 1, Axes -> True, AxesOrigin -> {0, 0}, Ticks -> {CustomTicks[Identity, {1, 3, 1, 1}], Automatic}] -- David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ <tomfabtastic at hotmail.com> wrote in message news:fj65e2$fnd$1 at smc.vnet.net... > Hi, > > The below chart successfully uses Epilog to include some text on the > BarChart: > > Needs["BarCharts`"] > barShape1 = > BarChart[{1, 2, 3}, > Epilog -> {Style[Text["First", {1, 2}, {0, -1}], 12, Red, Bold]}] > > However, I want to add a small Polygon to the graph. Again this works > well as long as the Polygon is black: > > barShape2 = > BarChart[{1, 2, 3}, > Epilog -> {Style[Text["First", {1, 2}, {0, -1}], 12, Red, Bold], > Polygon[{{1.25, 2}, {1.5, 2}, {1.5, 2.25}, {1.25, 2.25}}]}] > > But I would like to make the Polygon a red colour. But the below does > not work : > > barShape3 = > BarChart[{1, 2, 3}, > Epilog -> {Style[Text["First", {1, 2}, {0, -1}], 12, Red, Bold], > Graphics[{Red, > Polygon[{{1.25, 2}, {1.5, 2}, {1.5, 2.25}, {1.25, 2.25}}]}]}] > > Does anyone have a suggestion for adding a coloured Polygon to a > BarChart ? > > Regards, > Tom >