Hello all,
I am trying to use R to create a colored data matrix. I have my data
which (after certain steps of normalization and log transformation)
gives me a "x by y" matrix of numbers between 0 and -5. I want to be
able to create from this matrix of numbers a "x by y" image (box) that
contains x*y squares and somehow uses the value in the original matrix
to come up with a color that corresponds to the number. Hence each box
will be colored on a scale between 0 and 5. For example my data could
look like this:
X1.FcH X2.FcH X3.FcH X4.FcH X5.FcH
X6.FcH X7.FcH
1-AP 0.09667593 -4.66298640 -1.28299697 -4.8739017 -4.95862831
-5.178603 -4.878524750
2-AP -4.69186869 -0.08547776 -4.56495440 -4.8348255 -4.80256152
-5.121531 -4.894347108
3-AP -1.71380667 -4.52626124 -0.06810053 -4.8703810 -4.65657593
-5.024595 -4.824712621
4-AP -4.47968850 -4.48604718 -4.44314403 -0.1569536 -4.86436977
-4.988196 -4.550416356
5-AP -4.64616469 -4.53888807 -4.78163386 -4.9162949 -0.01729274
-5.061663 -0.769960777
6-AP -4.61047573 -4.60917414 -4.72514817 -5.0084772 -4.87797740
-0.284934 -1.782745357
7-AP -4.48157167 -4.61850313 -4.72241281 -4.8694868 -1.66122821
-3.887898 -0.002522157
How do I make a 7 x 7 box that has 49 squares and each square has a
color in the RGB spectrum that corresponds to the value. So for
example in the matrix above the biggest number which is 0.00966 (at
position 1 , 1) could be set to RED and the smallest number which is
5.0084 (at position 6, 5) can be set to BLUE and all the other numbers
be shades on a scale of Red going to Blue.
I hope this problem makes sense. I am rather new to R and was
wondering if there was a function or solution to this problem out
there.
Thanks
Kartik
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?image has worked for me.
David L. Reiner
Rho Trading Securities, LLC
Chicago IL 60605
312-362-4963
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Kartik Pappu
Sent: Wednesday, July 26, 2006 3:30 PM
To: r-help at stat.math.ethz.ch
Subject: [R] creating a color display matrix
Hello all,
I am trying to use R to create a colored data matrix. I have my data
which (after certain steps of normalization and log transformation)
gives me a "x by y" matrix of numbers between 0 and -5. I want to be
able to create from this matrix of numbers a "x by y" image (box) that
contains x*y squares and somehow uses the value in the original matrix
to come up with a color that corresponds to the number. Hence each box
will be colored on a scale between 0 and 5. For example my data could
look like this:
X1.FcH X2.FcH X3.FcH X4.FcH X5.FcH
X6.FcH X7.FcH
1-AP 0.09667593 -4.66298640 -1.28299697 -4.8739017 -4.95862831
-5.178603 -4.878524750
2-AP -4.69186869 -0.08547776 -4.56495440 -4.8348255 -4.80256152
-5.121531 -4.894347108
3-AP -1.71380667 -4.52626124 -0.06810053 -4.8703810 -4.65657593
-5.024595 -4.824712621
4-AP -4.47968850 -4.48604718 -4.44314403 -0.1569536 -4.86436977
-4.988196 -4.550416356
5-AP -4.64616469 -4.53888807 -4.78163386 -4.9162949 -0.01729274
-5.061663 -0.769960777
6-AP -4.61047573 -4.60917414 -4.72514817 -5.0084772 -4.87797740
-0.284934 -1.782745357
7-AP -4.48157167 -4.61850313 -4.72241281 -4.8694868 -1.66122821
-3.887898 -0.002522157
How do I make a 7 x 7 box that has 49 squares and each square has a
color in the RGB spectrum that corresponds to the value. So for
example in the matrix above the biggest number which is 0.00966 (at
position 1 , 1) could be set to RED and the smallest number which is
5.0084 (at position 6, 5) can be set to BLUE and all the other numbers
be shades on a scale of Red going to Blue.
I hope this problem makes sense. I am rather new to R and was
wondering if there was a function or solution to this problem out
there.
Thanks
Kartik
----------------------------------------------------------
IMPORTANT WARNING: This email (and any attachments) is only intended
for the use of the person or entity to which it is addressed, and may
contain information that is privileged and confidential. You, the
recipient, are obligated to maintain it in a safe, secure and
confidential manner. Unauthorized redisclosure or failure to maintain
confidentiality may subject you to federal and state penalties. If you
are not the recipient, please immediately notify us by return email, and
delete this message from your computer.
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Kartik Pappu wrote:> Hello all, > > I am trying to use R to create a colored data matrix. I have my data > which (after certain steps of normalization and log transformation) > gives me a "x by y" matrix of numbers between 0 and -5. I want to be > able to create from this matrix of numbers a "x by y" image (box) that > contains x*y squares and somehow uses the value in the original matrix > to come up with a color that corresponds to the number. Hence each box > will be colored on a scale between 0 and 5. For example my data could > look like this: > > X1.FcH X2.FcH X3.FcH X4.FcH X5.FcH > X6.FcH X7.FcH > 1-AP 0.09667593 -4.66298640 -1.28299697 -4.8739017 -4.95862831 > -5.178603 -4.878524750 > 2-AP -4.69186869 -0.08547776 -4.56495440 -4.8348255 -4.80256152 > -5.121531 -4.894347108 > 3-AP -1.71380667 -4.52626124 -0.06810053 -4.8703810 -4.65657593 > -5.024595 -4.824712621 > 4-AP -4.47968850 -4.48604718 -4.44314403 -0.1569536 -4.86436977 > -4.988196 -4.550416356 > 5-AP -4.64616469 -4.53888807 -4.78163386 -4.9162949 -0.01729274 > -5.061663 -0.769960777 > 6-AP -4.61047573 -4.60917414 -4.72514817 -5.0084772 -4.87797740 > -0.284934 -1.782745357 > 7-AP -4.48157167 -4.61850313 -4.72241281 -4.8694868 -1.66122821 > -3.887898 -0.002522157 > > How do I make a 7 x 7 box that has 49 squares and each square has a > color in the RGB spectrum that corresponds to the value. So for > example in the matrix above the biggest number which is 0.00966 (at > position 1 , 1) could be set to RED and the smallest number which is > 5.0084 (at position 6, 5) can be set to BLUE and all the other numbers > be shades on a scale of Red going to Blue. > > I hope this problem makes sense. I am rather new to R and was > wondering if there was a function or solution to this problem out > there. >Hi Kartik, Have a look at color2d.matplot in the plotrix package. Jim