Again using that great original bar chart code with a little modification, we can render a true stacked bar chart. We will use a different color for each stack and each stack will have its own tool tip too ! Just pass an array with your colors, one for each bar. The colors are specified by name, each color name has a corresponding spacer, a gif image file that is dynamically plugged into the IMG tag SRC attribute via our asp code. Make sure to place these files in your /images folder. For expanded tool tip information, pass an array with the additional text. Our example chart display five sensors (columns) with four states of alarm. (stacks). The right-hand column (bar) will represent the totals. The tool tip will first display the quantity followed by a description of what this stack on the bar represents. Note: You can embed the VbTab character to separate tool tip text into columns.
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