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Using Band Math in ENVI 4.8
By rodloc,
i have this equation to use in ENVI 4.8. I do not have access to IDL so i cannot do it by using that.
what i am wondering is if it possible to run the equation through Band Math
Speckle interferometry
By Dr.Who,
Hello, i am a postgrad student doing a research project by using sarscape 4.3 and ALOS-PALSAR imagery to detect the motion of Glacier in Russia. Does anyone know the algorithm of speckle interferometry? Seems to me should be used Amplitude Tratsking
IDL for Dummies !!
By sigologo,
Hello Everyone...
I need tutorial on IDL, time series (MODIS, NOAA), I've searched everywhere in the web
but I wasn't able to find out a manual or a tutorial for dummies for using IDL, I found very good tutorials but for Astronomy.....
[hide]
http://132.248.1.102/~morisset/idl_cours/IDL/index_local.htm
http://www.astro.virginia.edu/class/oconnell/astr511/IDLguide.html
[/hide]
Is there anybody so kind to help me to find something for Times Series..... in my Country (Chile -South Ameri
Images mosaic in Arcmap 10 do not open correctly in Erdas Imagine 2011
By deepgis,
Hello Everyone. I need someone's help to resolve my problem. I did mosaic my 27 images in Arcmap using New mosaic data set tool. When I opened the output mosaic image in Arcmap 10, everything goes fine but when I open the same image in Erdas 2011 the file pixle value 255 and LUT value 255 show 0 histogram and image display with black spots. How can I resolve this problem?
Universal Map Downloader and how to compress its big combined BMP file result
By moed_dev,
Hi Guys.. :grin:
This is not my field, so I need your advise.
I'm using UMD to download an area in Sumatera island. After completing the download and combining those ten-thousands tiles, I got this bloody 2Gigs BMP file. ArcCatalog took almost an hour to build the pyramid so that I can see the result.
I don't think BMP is good format to keep, so I need your advise what tools I can use to convert and compress this BMP file and what kind of file extension should be good in further GIS file
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Hello folks! I am trying to use the Lyzenga Algorithm for estimating the depth of water in shallower areas, probably depths under 8-10 meters of lakes. First of all, how accurate is this algorithm in practice? Secondly, lets say i have the band values. can someone explain me how to retrieve those depths? I am following the "Lyzenga Algorithm for Shallow Water Mapping Using Multispectral Sentinel-2 Imageries in Gili Noko Waters" paper, but there are 3 steps of getting NDWIs, NDCIs and after filtering the Sun Glint Correction, then it finally comes to the depth calculating. it end ups in a formula of following: 𝑧 = 28.32 ∗ 𝑋1 − 36.25 ∗ 𝑋2 + 9.42 ∗ 𝑋3 + 16.35 x1 , x2, x3 are RGB values respectively. What do you guys think? can i just apply this formula ? if not, what is the purpose of all the previous steps, and will they change the rgb values anyways? -
Hello folks! I am trying to use the Lyzenga Algorithm for estimating the depth of water in shallower areas, probably depths under 8-10 meters of lakes. First of all, how accurate is this algorithm in practice? Secondly, lets say i have the band values. can someone explain me how to retrieve those depths? I am following the "Lyzenga Algorithm for Shallow Water Mapping Using Multispectral Sentinel-2 Imageries in Gili Noko Waters" paper, but there are 3 steps of getting NDWIs, NDCIs and after filtering the Sun Glint Correction, then it finally comes to the depth calculating. it end ups in a formula of following: 𝑧 = 28.32 ∗ 𝑋1 − 36.25 ∗ 𝑋2 + 9.42 ∗ 𝑋3 + 16.35 x1 , x2, x3 are RGB values respectively. What do you guys think? can i just apply this formula ? if not, what is the purpose of all the previous steps, and will they change the rgb values anyways?
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