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Vertical Bar-Graphs
Have a look at the following examples to see how you can create your own graphs:
Example #1
The most simple graph looks like this:
graph = new BAR_GRAPH("vBar");
graph.values = "380,150,260,310,430";
document.write(graph.create());
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Example #2
Now let's add some labels and titles:
graph = new BAR_GRAPH("vBar");
graph.values = "380,150,260,310,430";
graph.labels = "Jan.,Feb.,Mar.,Apr.,May";
graph.titles = "Month,Sales";
document.write(graph.create());
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Example #3
It's also possible to create grouped bar-graphs for comparison.
Separate grouped values by a semicolon and add a legend:
graph = new BAR_GRAPH("vBar");
graph.labels = "Jan.,Feb.,Mar.,Apr.,May";
graph.titles = "Month,Sales";
graph.values = "380;420, 150;340, 260;120, 310;250, 430;370";
graph.legend = "2001,2002";
document.write(graph.create());
If you want to use an array for the values, here's an example:
graph.values = ["380;420", "150;340", "260;120"];
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Example #4
Let's change some colors and show the values:
graph = new BAR_GRAPH("vBar");
graph.labels = "Jan.,Feb.,Mar.,Apr.,May";
graph.titles = "Month,Sales,Per-cent";
graph.values = "380;420, 150;340, 260;120, 310;250, 430;370";
graph.legend = "2001,2002";
graph.graphBGColor = "#B0E0B0";
graph.graphBorder = "1px solid green";
graph.graphPadding = 10;
graph.titleColor = "yellow";
graph.titleBGColor = "#60C060";
graph.barColors = "#C0D0C0,#80D080";
graph.barBGColor = "#D0F0D0";
graph.labelColor = "yellow";
graph.labelBGColor = "#60C060";
graph.absValuesColor = "#008000";
graph.absValuesBGColor = "#D0F0D0";
graph.percValuesColor = "#008000";
graph.legendColor = "#008000";
graph.legendBGColor = "#D0F0D0";
graph.legendAbsValues = true;
graph.showValues = 1;
document.write(graph.create());
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Example #5
Bar width (pixels), length (ratio) and border (CSS-spec) are also changable.
By the way, BAR_GRAPH also supports floating point numbers and negative values:
graph = new BAR_GRAPH("vBar");
graph.labels = "Jan.,Feb.,Mar.,Apr.,May";
graph.barColors = "white";
graph.showValues = 1;
graph.values = "0.38,-0.15,-0.26,0.31,0.43";
graph.percValuesDecimals = 2;
graph.barWidth = 40;
graph.barLength = 1.5;
graph.barBorder = "2px solid red";
document.write(graph.create());
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Example #6
For large amounts of values, it may be useful to split them into several charts:
graph = new BAR_GRAPH("vBar");
graph.values = "1,2,3,4,5,6,7,8,9,10,10,9,8,7,6,5,4,3,2,1";
graph.labelBGColor = "#C0C0F0";
graph.barBGColor = "#E0E0F0";
graph.charts = 2;
document.write(graph.create());
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Example #7
It is possible to set extra colors for bars whose value exceeds certain levels:
graph = new BAR_GRAPH("vBar");
graph.values = "380,150,260,310,430";
graph.showValues = 1;
graph.barLevelColors = [1, "red", 260, "yellow", 380, "lightgreen"];
document.write(graph.create());
NOTE: All level-color-pairs should be written in ascending order, and of course this
feature is not suited for grouped bar-graphs.
You can also use the keyword MAX for setting the color of the bar with the highest value:
graph = new BAR_GRAPH("vBar");
graph.values = "380,150,260,310,430";
graph.showValues = 1;
graph.barLevelColors = [1, "#C0C0FF", 300, "#8080FF", "MAX", "#4040FF"];
document.write(graph.create());
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Example #8
Let's do some more design changes and add a prefix to the values:
graph = new BAR_GRAPH("vBar");
graph.values = "380,150,260,310,430";
graph.labels = "Jan.,Feb.,Mar.,Apr.,May";
graph.showValues = 1;
graph.barColors = "#E0E0E0";
graph.barBGColor = "white";
graph.barBorder = "1px solid #808080";
graph.labelColor = "#A0A0A0";
graph.labelBGColor = "";
graph.labelBorder = "1px dashed #A0A0A0";
graph.labelFont = "Arial Black, Arial, Helvetica";
graph.labelSize = 16;
graph.absValuesColor = "silver";
graph.absValuesBGColor = "white";
graph.absValuesBorder = "1px solid silver";
graph.absValuesFont = "Verdana, Arial, Helvetica";
graph.absValuesSize = 14;
graph.absValuesPrefix = "€";
graph.percValuesColor = "#C0C0C0";
graph.percValuesFont = "Comic Sans MS, Times New Roman";
graph.percValuesSize = 16;
document.write(graph.create());
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Example #9
You can also use images (PNG, JPG or GIF) instead of bar colors, and add some
space between labels:
graph = new BAR_GRAPH("vBar");
graph.values = "50;30;40, 60;80;50, 70;40;60";
graph.labels = "Jan.,Feb.,Mar.";
graph.legend = "cats,dogs,birds";
graph.barColors = "blue.gif,red.gif,green.gif";
graph.labelSpace = 10;
document.write(graph.create());
NOTE: Images are not included in this package.
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Example #10
Sometimes you have very similar values, like for instance 1000, 1010, 1020. The difference between them
is too small to view in a graph:
graph = new BAR_GRAPH("vBar");
graph.values = "1010,1020,1030";
graph.showValues = 1;
document.write(graph.create());
In this case you can tweak the bar length by using the baseValue variable. Please note that not
only the bar length, but also the percentage changes accordingly:
graph = new BAR_GRAPH("vBar");
graph.values = "1010,1020,1030";
graph.baseValue = 1000;
graph.showValues = 1;
document.write(graph.create());
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