Can I get it B&W(1-bit color) PNG ?

Djonatah S. · Post by **Djonatah S.** » Wed Nov 26, 2008 9:12 pm

Hi,

I would like to create PNG B&W (1-bit color) is it possible?

Thanks

Post by **Taqua** » Thu Nov 27, 2008 6:51 pm

Sure, assuming that you carefully tweak the chart's various paints to be TexturePaints with black-and-white images as textures.

If you use the default color configuration of a chart to render a black-and-white image you won't like the result.

Djonatah S. · Post by **Djonatah S.** » Thu Nov 27, 2008 7:12 pm

Taqua, Thanks for the answer.

Actually I have already tried to convert images in another process (after creating images). About the textures I'll take care of them..

But, is there an option when saving images to save in 1-bit color? (Because I could not find on the API docs, neither on the web..)

Could you give me some help on that?

Thanks.

Post by **Taqua** » Fri Nov 28, 2008 7:23 pm

You have to render the chart into a buffered-image. For that, create the image, grab the Graphics2D for the image and then call "JFreeChart#draw(..)" with the graphics2d and a rectangle that fits your image's size.

JFreeChart itself does not offer a helper method for that, and as this is standard Java2D-programming, there is no need for such a method either.

Djonatah S. · Post by **Djonatah S.** » Tue Dec 02, 2008 1:46 pm

Hi Taqua,

I tried that, and it worked fine. Thanks for your help!