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This is not exactly the answer to your question, but rather a suggestion. For RS, I would not use QGIS as a core software, because it is more oriented for GIS (even if it includes many tools). I suggest that you have a look at GRASS 7 (the new GUI is a true step forward). I don't have a look of experience because it is new, but I got some feedback and I've ...


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It turns out the problem was a lingering projection issue. The NDVI scenes were default projecting in Arc as a similar, but different projection (sorry, I can't remember what it was off the top of my head), whereas the assigned projection from USGS was Lambert Azimuth Equal Area. The projection along with a tutorial of how to correct the issues are posted at ...


1

The short answer is that you can't. The documentation says: The Advanced Wide Field Sensor (AWiFS), on-board IRS-P6 operates in four spectral bands in green (0.52-0.59µm), red (0.62-0.68µm), near infrared (0.77-0.86µm) and short wave infrared (1.55-1.70µm) Since the data does not have the regular 3 bands, you cannot get a True color composite of ...


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irst of all, download the landsat_destripe file from exelis website. If you are using Envi 5.0, find the save_add folder in your installation destination and put it in there. Fire up Envi Classic -> Basic tools -> Preprocessing -> General purpose utilities -> Landsat ETM+ Destriping. Follow the GUI.


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When this question was submitted, there was no support for the recent sensor of the Landsat family. However, according to http://trac.osgeo.org/grass/changeset/61314, wihch is GRASS GIS' official project management system, the i.atcorr module in GRASS 7, supports for Landsat8 imagery since end of July 2014.


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What I ended up doing: 1) Download and decompress your landsat tile. Do not open and look at the images in ArcMap because ArcMap will create .proj on the fly and this will confuse poor fmask and prevent it from running. 2) Once your landsat tile of choice's file is decompressed/unzipped/etc. Follow the directions on fmask's website for masking clouds. I ...


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The full details can be found on the USGS FAQ. Here is a short answer. Band numbers in Landsat 5 TM and Landsat 7 ETM+ correspond with the same wavelength (approximately). Unfortunately, ​Landsat 5 Thematic Mapper (TM) operational imaging ended in November 2011. Landsat 5 MSS was powered back on in 2012 and collected data until January 2013. However, there ...


1

This has to do with the fact that the bands with the same number in different Landsat sensors can correspond to different spectral ranges. So, if you are attempting to display Landsat 5 or 8 imagery with the same band combination like your Landsat 7 imagery, then this will not work as some of the bands, despite their same number, cover different parts of the ...


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I solved it on my own but maybe handy for others. First i clipped the layers using Raster-extraction-clipper tool and than copied the .txt file into the folder of the clipped images. This did not work. I now clipped them using the clip multiple raster option within the semi automatic classification plug in and then copied the .txt file from the original ...


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Have a look at this Exelis video on Youtube. Use the new interface - not the classic view.


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Installing binutils-gold is only required if compilation fails (this has been the case under Ubuntu, I'm not sure about Debian). After installing the required prerequisites you should be able to get LAG working using the following steps: If you haven't already installed autotools: apt-get install autotools LAG has recently been updated so the patched ...


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It is quite tricky to interpolate based on the MOD10A2 because this is a maximum extent product (1 snow observation and seven non snow observation is flagged as snow). I would rather recommend you to use the daily products.


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First, there is problably a typo in your question, but here are the sun angles solar zenith angle = 90 - meanSunEl solar azimuth angle = meanSunAz this is also valid for the mean satellite angles MEAN satellite zenith angle = 90 - meanSatEl MEAN satellite azimuth angle = meanSatAz That being said, it is important to realize that you can consider ...


1

Reverb|Echo is one of the best collections of RS data available. Although it is initially difficult to navigate, you will find that you can search by science keywords, platforms & instruments, campaigns, and processing levels.


-1

just find the projection type of one of your satellite image and project your other satellite image and the digitized layer to the same projection type.


0

Easy answer: You can't. I also expected this, since it should be a standard operation if you import data correctly as every band in .pix format has metadata describing the wavelength (working with SPOT and WV data myself). Also the help describes the possibility if you look closely, but it is not implemented. If you bother support with it: The spectral ...


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Using OpenStreetMap you can compute the building height through some tags on buidings. As you can see there is an extrusion in Bucharest (and whole world) in this 3D simulation: http://demo.f4map.com/#lat=44.4379244&lon=26.1004697&zoom=18. Note that the accuracy of the height of buildings is random and some buildings does not have height relative ...


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I recently discovered an ArcMap answer to my question: The image analysis window has swipe tool which is exactly the tool I was after. http://i.imgur.com/h5rBUkQ.png



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