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How to unzip LROC CDR images?
TerryH
post Jul 7 2010, 10:38 PM
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I have downloaded some LROC CDR 500MB images but am unable to unzip them. WinZip gives an error message - I suspect the zip file is too big for it. Irfan says it can't read the headers. NASAview seems to unzip them but displays them as completely white images but for a few hints of craters that appear as very pale grey.

Could anyone suggest an unzip program? Ideally I would like to display the images in Photoshop.

Terry.

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Phil Stooke
post Jul 8 2010, 11:51 PM
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Ok, I'm doing one as an experiment, but it's downloading as an IMG file, not as zip. Maybe IMG files are associated with zip on your system so it looks like a zip file? As for not handling the full size, you can try just opening the first 30000 rows as an experiment, if you can't get the whole image (I've done that on an older machine) - enter the width, 5064 pixels, and the height, 30000. You'll get a message saying the size is smaller than the file but you just ignore it.

Phil


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Posts in this topic
- TerryH   How to unzip LROC CDR images?   Jul 7 2010, 10:38 PM
- - Phil Stooke   They are zipped? I use the EDRs, but I thought th...   Jul 8 2010, 12:28 PM
|- - TerryH   I download them from the WMS browser at http://wms...   Jul 8 2010, 10:36 PM
- - Phil Stooke   Ok, I'm doing one as an experiment, but it...   Jul 8 2010, 11:51 PM
- - Phil Stooke   As I said I usually use the EDR, not the CDR. But...   Jul 9 2010, 02:41 AM
- - JohnVV   i am guessing that win is defaulting to " hel...   Jul 9 2010, 07:05 AM
- - TerryH   Thanks for you suggestions but I am still not gett...   Jul 13 2010, 11:50 AM
- - Phil Stooke   You have to use 'open as...' (not 'ope...   Jul 13 2010, 01:14 PM
- - JohnVV   QUOTE I still cannot open img files in Photoshop -...   Jul 13 2010, 06:47 PM
- - TerryH   Phil...I have now opened .img EDR/CDR images in th...   Jul 13 2010, 09:23 PM
- - Stu   Glad you got sorted out Terry. People forget som...   Jul 13 2010, 09:55 PM
- - ElkGroveDan   RE: How to unzip LROC CDR images?   Jul 13 2010, 11:02 PM
- - JohnVV   chill, my apologies ,bad day .   Jul 14 2010, 02:18 AM
- - cassioli   I have a different problem: some of the TIFF image...   Sep 17 2010, 11:48 AM
- - Phil Stooke   Those are wide angle images. The strips are diffe...   Sep 17 2010, 12:06 PM
|- - cassioli   QUOTE (Phil Stooke @ Sep 17 2010, 12:06 P...   Sep 17 2010, 12:12 PM
- - Phil Stooke   Try the links here: http://lpod.wikispaces.com/Se...   Sep 17 2010, 12:45 PM
|- - cassioli   thanks, amazing site!   Sep 17 2010, 01:24 PM
- - JohnVV   there is a bit of code to "fix" them an...   Sep 17 2010, 06:04 PM


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