Re: Invert Black/White Colors of Binary Images
- To: mathgroup at smc.vnet.net
- Subject: [mg84171] Re: Invert Black/White Colors of Binary Images
- From: Szabolcs Horvát <szhorvat at gmail.com>
- Date: Wed, 12 Dec 2007 05:14:27 -0500 (EST)
- References: <fjnupg$fhc$1@smc.vnet.net>
Tara.Ann.Lorenz at gmail.com wrote:
> Hi,
>
> I am using the following code to create black and white images with
> 5% black pixels and 95% white pixels:
>
> blackcolor = Table[1, {45}];
> whitecolor = Table[0, {855}];
> arrayvalues = Join[blackcolor, whitecolor];
> randompermutation := RandomSample[Range[1, 900]];
> image := Partition[arrayvalues[[randompermutation]], 30];
> t1 = Graphics[Raster[image]]
>
> How can I invert the coloring to have 5% white and 95% black??
Work with (1 - image) or use the ColorFunction option of Raster.
--
Szabolcs