Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

What's wrong with this small code?

• To: mathgroup at smc.vnet.net
• Subject: [mg49928] What's wrong with this small code?
• From: jianchaoyao at hotmail.com (Justin)
• Date: Fri, 6 Aug 2004 03:09:52 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

I made a 4*4 IdentityMatrix, named "test". Then, I wanna show the
diagnol "1" in RED. After running the following code, I got the red
diagnol opposite to the "1" diagnol. What's wrong with this code? Can
anybody find it out?

Thanks.  
 
test = IdentityMatrix[4];
{numRows, numColumns} = Dimensions[test];
Show[
  Graphics[
    RasterArray[
      Table[
        If[
          test[[i, j]] > 0,
          RGBColor[1, 0, 0],
          RGBColor[0, 1, 0]
          ],
        {i, 1, numRows}, {j, 1, numColumns}
        ]
      ]
    ]
  ]

• Follow-Ups:
  • Re: What's wrong with this small code?
    • From: Omega Consulting <info@omegaconsultinggroup.com>