My Assistant
Numbers to Pixels |
Jan 7 2009, 01:10 PM
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Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
I've got a few .tab's from the PHX Lidar
Basically - after playing with it for a while, I'll end up with a spreadsheet of values. Each column being one sample 30s apart - each row being a different altitude. Does anyone know a means of taking a CSV or similar, and turning it into a small image with pixel brightness representing the values from the CSV? I've thought of one technique using conditional formatting in Excel - but it probably wont work very well |
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Jan 7 2009, 01:23 PM
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#2
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
My terrain mapping (and in fact my MER image processing as well) does quite a bit of converting of number arrays to image pixel values using the FreeImage C++ library. If you sent me the file I could probably do the conversion to without too much trouble.
IDL can do it as well (not sure about the free GDL, never used it) using 'plotgrid'. Not sure if you could get 16bit images using this method though (if you needed that). -------------------- |
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djellison Numbers to Pixels Jan 7 2009, 01:10 PM
djellison This is what I've managed so far
Using LS003... Jan 7 2009, 01:29 PM
ElkGroveDan It sounds like the kind of thing I was learning to... Jan 7 2009, 02:39 PM
djellison Next step - doing it greyscale - for the two diffe... Jan 7 2009, 02:58 PM
lyford Brilliant! Jan 7 2009, 04:36 PM
RoverDriver QUOTE (djellison @ Jan 7 2009, 05:10 AM) ... Jan 7 2009, 05:39 PM
sci44 QUOTE (RoverDriver @ Jan 7 2009, 05:39 PM... Jan 7 2009, 07:37 PM
stewjack QUOTE (djellison @ Jan 7 2009, 08:10 AM) ... Jan 7 2009, 06:12 PM
imipak Doug, could you post the CSV data? I was half-way ... Jan 7 2009, 07:55 PM
sci44 QUOTE (imipak @ Jan 7 2009, 07:55 PM) (Ed... Jan 7 2009, 10:17 PM
djellison Kudos to Card-Carying lurker Pete He pointed me... Jan 7 2009, 09:34 PM
lyford *sigh*
just like old times Jan 8 2009, 02:08 AM
4th rock from the sun Interestingly, the relation between the visible nu... May 25 2009, 02:33 PM
vk3ukf Love the pic of the guy with the crayons, I found ... May 24 2009, 09:13 AM
djellison I think they had only a few colours - so they brac... May 25 2009, 02:44 PM
4th rock from the sun I looked again to the close up image where the num... May 26 2009, 10:37 AM![]() ![]() |
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