This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
i used theopenoffice.org charting component to draw a candlestick chart. i have a spreadsheet that holds more than 2000 columns .when i draw the candle chart with these 2000 data series ,the chart is not readable (very small). I thought to implement a sort of zooming effect on the chart canvas .I believe zooming a graphics requires scaling the y-axis and x-axis values. is that right ? the issue with OOo candle chart is that x-axis values that holds "dates" are treated as "categories" and should be in text format. thus there is no way to scale x-axis values by specifying a min ,max ,step date . can you please describe me an algorithm to implement zoom in/out for a candle chart ?
thanks. [ September 14, 2008: Message edited by: omar Bakr ]