Questions about data from the Moderate-Resolution Imaging Spectroradiometer sensors aboard the Terra and Aqua satellites.

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11 views

Cloud and cloud shadow identification with MERIS

I am looking at MERIS images to use for marine applications (Chl-a. SPM) and would like to confidently remove cloud and cloud shadow pixels from the data. I have a few ideas: Using the blue band ...
1
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0answers
14 views

Modis Daily LST Data is mean of all day or it is on satellite path time?

I am looking for MODIS LST product which is exactly on the same time that satellite paths from a location,I have searched and found MOD11A1 but It seems that it is mean LST of Day,Is there any product ...
2
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1answer
78 views

How can I parse modis MOD13Q1 quality layers in R?

I'd like to parse MOD13Q1 VI quality layers in R. My original code must have been incorrect, because it gave lots of "deep ocean" flags in the middle of Brazil. After the changes suggested by ...
0
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1answer
23 views

Is there anyway to analyze the MODIS MCD12Q1 level 3 data in ENVI?

How can i see the classes of the product MODIS MCD12Q1 and analyze them in ENVI exelis? Seadas open them but ENVI not.
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0answers
61 views

Error in downloading MODIS image using R script

I am trying to download "MOD13A3" MODIS image using R script (http://r-gis.net/?q=ModisDownload) but each time it's ending in error. How to make it work ? ...
0
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2answers
19 views

gdalwarp changing value in nodata pixels

I'm using gdalwarp to convert MODIS NDVI mosaics from Sinusoidal to epsg:4326. To save space I'm using VRT files until I reach the final product. Here is my workflow. Mosaic NDVI Modis tiles using ...
0
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1answer
21 views

MODIS Data MOD09 MOD03

i have downloaded MODIS Data for fog estimation for the whole month of December 2014 from laads website. The files i received are 90 for mod09 and 180 for mod03 for the same period. how do i relate ...
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0answers
24 views

HDF to Geotiff conversion

can anyone tell the program code or script for converting HDF files to geotiff using MRTSwath tool? I've downloaded MODIS Files for fog estimation but i couldn't find how to process them.
1
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1answer
38 views

QGIS: RGB Image display results in odd colors (MODIS)

I am trying to make a rgb map of MODIS data (Dataset09 Radiances) with QGIS. First I converted it to tif with gdal (and python). Since I did not really understand all of GDALs funcionality I used a ...
-1
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1answer
106 views

Image Processing for vegetation detection using NDVI technique

I have a MODIS 250m resolution satellite image in jpg format.How do i do image processing using NDVI technique on it? Basically i have to detect vegetation for a 250m resolution MODIS image using NDVI ...
0
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0answers
44 views

Legend for MCD12Q1 modis land cover data

I have Modis yearly 500m landcover data (MCD12Q1) i native .hdf format . I projected , mosaicked and converted them into .tif format whose values are from 0 to 16 . I set nodata value as 17 . I just ...
0
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1answer
44 views

mosaicking and projecting modis land cover data MCD12Q1

I have modis land cover MCD12Q1 data .Its in the sinusoidal projection (.hdf native format ). I have to study the land cover characters from the data for which i have to convert them into .tif format ...
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0answers
12 views

opening modis ndvi data .tif in timesat 3.1 windows [duplicate]

my aim is to apply savitzky golay filter to MODIS ndvi data in tif format. how do i open them in timesat 3.1 in windows .i tried opening tif files in imageview but the app does nothing. please help . ...
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0answers
46 views

applying savitzky golay filter to modis ndvi data

I want to smooth the ndvi MODIS 16 bit integer data .tif for LULC classification . i have timesat 3.1 software on windows but i don't how to apply the SG filter . i am not that good in programming . i ...
1
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1answer
24 views

MODIS MOD10A2 snow product

I have extracted pixel value ( pixel value=200 for snow) from MOD10A2 snow product for my study area. Since MOD10A2 product is distributed every 8-days. i.e., 9th Jan, 17th Jan, 25th Jan,2nd Feb,.... ...
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0answers
18 views

lulc unsupervised classification in envi for modis 250m data

I've got modis 250m data with NDVI,RED,BLUE,NIR,MIR bands....i have to obtain 10 classes such as Urban,Evergreen,decidious,cropland,fallowland,plantaion,water,barrenland,land with scrub,land without ...
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0answers
13 views

lulc mapping from modis surface reflectance

can i prepare LULC with 10 classes from MODIS surface reflectance level 3 data 500m resolution... if so what are the preprocessing techniques should i do on the data..i have to prepare LULC for yearly ...
0
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1answer
44 views

Analysis MODIS NDVI - MOD12A2

I am new here and also in remote sensing. I am trying to analyse the images that I downloaded from MODIS, which are the Vegetation Indices 16-Day L3 Global 1km. With that I want to analyse the change ...
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0answers
40 views

Analysis of MODIS 16 Data Set

I have downloaded the raster data sets of the Evapotranspiration data for about 10 years. I need to analyze those raster data sets. Which tool can I use? Or do I need to download a certain plugin. ...
1
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2answers
92 views

GDAL HDF4 Driver on Linux System

I'm running code that works with MODIS HDF4 datasets on a Debian Linux distribution. I am also running this code on a Windows machine. On both the Windows and the Linux machines, I have the most ...
0
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1answer
61 views

Using Quality Control process for MODIS Leaf Area Index?

Anyone can help in explaining how I can apply Quality Control (QC) for MODIS Leaf Area Index (LAI) to extract the valid pixels of LAI using ArcMap?
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0answers
36 views

Can't run sgolayfilt () on RasterStackTS in R

I'm quite new in R and remote sensing at all. Had followed the following step to filter my MODIS/NDVI data. library(sp) library(raster) library(rgdal) library(rts) library(signal) getwd() ...
3
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1answer
62 views

pymodis download issues

I'm trying to download and process MODIS imagery using pymodis. I have Python 2.7.8 (Spyder), numpy 1.9.1 and gdal 1.11.1. I've also installed WXPython. I originally tried to use the ...
1
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1answer
104 views

Different origin between GDAL/Python and ArcMap of a Modis image

I have a Modis image and i load this image in Python using gdal library from osgeo import gdal, ogr INPUT_raster_1 = "C:\\myimage_1km.tif" ds_1 = gdal.Open(INPUT_raster_1, gdal.GA_ReadOnly) ...
0
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0answers
51 views

Clip .hdf (MODIS) rasters by shapefile

I am trying to do a temporal analysis on vegetation quality so I downloaded a MODIS .hds raster from earthexplorer. When I opened the file into ArcMap 10.2.2, it came as a group of 11 rasters. I stuck ...
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2answers
38 views

MODIS product MCD43A3 stating 16 periodicity but when downloadad I have files every 8 days

I'm downloading the MODIS derived Albedo 16-Day L3 Global 500 m resolution product. I expected to have a dataset for dates every 16 days. Instead I have datasets every 8 days as can be seen in the ...
3
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0answers
59 views

Frontal Detection of sst & Chlorophyll image

I am working on sea surface temperature satellite images and looking for delineating gradients in open source on the basis of temperature. Is there any tool like Cayula and Cornillon front detection ...
1
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0answers
56 views

Spectral Signature Extraction using landsat 7 and MODIS

I am working on differentiating cocoa plants from other vegetation types using 4 epoch bwt 1980-2010. I need to extract the spectral signature for cocoa plants and other known features. I plan using ...
2
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0answers
33 views

VI Quality dataset in MODIS image

While importing NDVI dataset in ArcGIS should we also import the VI_Quality dataset ? If yes then how should we handle it ? and, if not, then for what it is there ?
4
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0answers
77 views

How do I open MOD17A3 in ENVI such that it is properly georeferenced?

I am using ENVI 5.1 on Windows 8. I am trying to open a MOD17A3 (MODIS Net Primary Productivity standard product - L4) .hdf file which I downloaded from the USGS website. I am still a beginner at ...
1
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1answer
39 views

TIMESAT Land cover class

Is it possible to monitor phenology of only 2 land cover classes in TIMESAT? Example is corn and wheat for 7 years. Sowing structure of this crops changes every year, i.e. their location on an image ...
0
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2answers
65 views

Modis LandCover processing

is there any tool to open and process mcd12q1(modis landcover product)? apparently Envi doen't work for this. any help highly appriciated.
1
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2answers
148 views

Using MODIS Data after FLAASH

I am working on my thesis and I need to convert modis MOD021km data to reflectance and Brightness temperature.I know that some plugins for Envi is doing this with modis data but I want to run an ...
2
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1answer
89 views

Does MOD021km images from MODIS needs atmospheric corrections

I have downloaded some mod021km modis images and I want to work with them.I want to know does these data needs atmospheric corrections?sth like FLASSH in ENVI or other methods?I can convert hdf files ...
0
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2answers
89 views

How convert a Modis hdf to txt with lat long using a command line

I need convert, from command line, an Modis hdf file to txt with lat/long extracting EVI. Thanks
4
votes
1answer
143 views

Working with MODIS in R

I am new to using MODIS data and was hoping to get some help starting out. I have been able to download the hdf file but viewing it in R has been a problem for me. What I have found so far, and ...
0
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1answer
48 views

How to get MODIS data with 3 band and step to change hdf file to colored map ?

i just convert hdf file to tiff with MRT but my result is grayscale map,How to get MODIS data with 3 band and step to change hdf file to colored map ? thanks
0
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1answer
171 views

Opening an modis hdf file in Envi and Calibration

I have downloaded an modis hdf file.it is l1 and its name is MOD021KM ..I want to convert it to radiance.so I performed this steps in envi Open>EOS>MODIS selected modis hdf file.then I tried to run ...
1
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2answers
117 views

calculate EVI for numerous tiles

I am trying to calculate EVI from MODIS data in Arc. I know how to run one raster group of 3 bands but don't know how to tell it to move on to the next group of 3 bands in that directory. Here is the ...
0
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0answers
63 views

Trouble with reading Leaf area index (LAI) Modis on QGIS

I am having trouble reading my Modis LAI data on QGIS. I imported my Modis hdf files and I used the QGIS raster calculator to apply the scale factor and all I get is a blank gray tile. My goal is to ...
1
vote
2answers
136 views

Tasseled Cap Transformation on MODIS in GRASS

I would like to know how to perform a Tasseled Cap Transformation on MODIS, in GRASS. I've found this https://searchcode.com/codesearch/view/19063909/ but I don't know if this has been tested. I'm ...
1
vote
1answer
97 views

Maintaining spatial integrity of Matlab matrix with missing data

I am working with MODIS Terra imagery (MOD13Q1). I am currently trying to compute the autocorrelation structure of the pixels in an MODIS NDVI raster. The problem is that I have clipped the original ...
2
votes
1answer
148 views

Reprojecting MODIS Ice Sea Temperature products with gdalwarp

I have problems projecting MODIS Ice Sea Temperature (IST) products to EPSG:3031 (Antartic Polar Stereographic) using gdalwarp. The product I'm working with is MOD29E1D, documented here, p33: The ...
2
votes
1answer
100 views

Kriging from raster with missing data in ArcGIS

I have MODIS satellite imagery that depicts a range of surface temperatures. However, many of the cells are missing values. I think I need to perform Kriging in order to obtain an average value for ...
2
votes
1answer
235 views

Extract elevation data from Landsat / MODIS imagery?

Just curious, have anyone tried to extract elevation data from LANDSAT or MODIS imagery? So far, I came across one journal by Toutin who did so using adjacent LANDSAT 7 imageries. Results seem pretty ...
1
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0answers
53 views

Urban Heat Island USING ENVI

I have downloaded MODIS images for a specified area.. Its my first time that I am working on UHI (Urban Heat Island).. I need to know the methods to work on it.. I am using ENVI for this.
4
votes
3answers
562 views

Install gdal in CentOS without Root

I have been struggling to get python setup to do some image processing, so I really need the http://www.gdal.org/ GDAL libraries installed on CentOS 6.5. I want to install the package in a local ...
0
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1answer
180 views

Reproject MODIS level 3 chlorophyll data using gdal

I am trying to reproject MODIS Level 3 chlorophyll data (for instance, this file) using gdal in R. I used gdal_translate and gdalwarp functions. There was no crs information associated with ...
2
votes
1answer
321 views

Cannot properly import MODIS MOD07_L2 .hdf files into R using rgdal

I've been trying to accurately import and process some .hdf files from the MODIS Atmospheric Profile product (MOD07_L2) in R for several days now. Still, there's something going wrong during data ...
2
votes
1answer
61 views

Compute number of days with snow

I have a project and I want to map the effective number of days with snow cover for a year in some mountain area. Until now, I have processed the MOD10A2 (8 days snow cover) product derived from MODIS ...