Hi loadPNG_java,
I cannot reproduce the problem with your code. I can only reproduce the problem if I add an extra line:
c.setOutputOptions("bmpscale=4");
Is it possible in your code, you have this line somewhere?
The bmpscale is only applicable to bitmap images. These images are generated by ChartDirector with a definite pixel size. The bmpscale can be used to ask ChartDirector to generate bitmap images with more pixels (higher resolution).
For SVG, the image is indefinitely scalable. You can consider it to have infinite resolution. As a result, it does not need bmpscale. Of course, with currently technology, to actually display it, it needs to be convert to pixel images (because the screen can only display pixels). This is the responsibility of the viewing program (such as the browser). The viewing program should be able to convert the SVG to the required number of pixels. For example, in HTML. you can use CSS or HTML tags to specify the size you what the SVG to display.
If you need to output the chart in both SVG and PNG, you can output it in SVG first, then call setOutputOptions, and then output in PNG. The setOutputOptions make some changes to the chart object, so if you output PNG first, it would not work normally for SVG which does not support bmpscale. Another alternative is to create two chart objects, one to output PNG and one to output SVG. (Normally, creating two chart objects does not need any extra charting code. You just call the same code twice.)
Best Regards
Peter Kwan |
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(loadPNG_java) 
Ugly SVG output(java)