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MathGroup Archive 2009

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incorrect display for Export[Image[]]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg104973] incorrect display for Export[Image[]]
  • From: divisor <congruentialuminaire at yahoo.com>
  • Date: Sun, 15 Nov 2009 05:57:44 -0500 (EST)

Hello MathGroup:

Here is a simple command to create an Image[]:

Image@Table[
  With[{z = x + I y},
   With[{w = (1 + z + z^2 + z^3)/(1 + z + z^2)}, {Re[w],
     Im[w]}]], {x, -1, 1, 0.01}, {y, -1, 1, 0.01}]

It displays correctly in Mathematica. Then I attempt to Export[] this image
with:

Export["e:\\t111409A.jpg", %, "JPEG"]

When I look at the image outside of Mathematica, it does not show correctly.
It looks like only the Alpha channel shows. I also tried these other
$ExportFormats:

- GIF
- TIFF

with the same result.

I imagine there is a simple resolution to this problem, but I cannot
find it yet.

Thanks in advance.

Roger Williams
Franklin Laboratory


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