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

learn more… | top users | synonyms

2
votes
2answers
280 views

MODIS Level 1B batch process

I am a new MODIS Level 1B user. I have been using the MODIS Swath tool to process my images. However, I have over 1000 images to process. I was wondering if there a script available in IDL or R (very ...
4
votes
3answers
515 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
votes
0answers
67 views

Cause of MODIS Reprojection Tool errors?

I have installed the MODIS Reprojection Tool (mrt) and it says the installation completed successfully but it does not mosaic my images properly. However, there seems to be some projection errors. ...
4
votes
1answer
98 views

What proportion of the 240m area sensed by MODIS must be forest before it is defined as forest?

MOD12 is a MODIS product at 240m resolution. Landsat produces 30m resolution products, which I resampled to 240m resulting in a raster of proportion forest cover in each 240m pixel (based on the mean ...
0
votes
1answer
172 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 ...
3
votes
3answers
785 views

climatic data from MODIS or other sources

I'm looking for climatic information in the form of raster like MODIS daily LST (Land Surface Temperature) data. I'm looking for other parameters like precipitation, humidity, air pressure and so on. ...
0
votes
1answer
144 views

MODIS LDOPE mask_sds Error

I am using the LDOPE mask_sds tool to mask a MODIS image based on the quality flags for MOD13A3 NDVI. The full command that I am using is: mask_sds -of=mask.hdf -fill=-3000 -sds='1km monthly NDVI' ...
1
vote
1answer
1k views

Reprojected MODIS NDVI has range from -32768 to 32767, expected -1 to 1

I'm new to StackExchange and to remote sensing. I am working with MOD13Q1 250m 16-day MVCs. My goal is to use NDVI time-series to classify cropping pattern and crop type, then link this data to ...
0
votes
0answers
20 views

how to transform sinusoidal cordinates in MATLAB [duplicate]

I am working with the Mod10a2. I want to convert MODIS HDFs with sinusoidal projections to WGS84 in MATLAB. i want to find the corresponding X & Y of the each pixel and then convert them ...
0
votes
0answers
129 views

MODIS products reprojection problem

I am working with Modis Data (MOD02, MOD11, MOD03, MOD35). In particular I am looking for a solution to reproject the subdatasets below, into albers equal. Because I am using NLCD dataset which uses ...
-1
votes
1answer
410 views

MODIS MOD13Q1 ndvi calculation

i have downloaded the modis MOD13Q1 from usgs glovis in hdf format. how i will convert it into original ndvi value by multiplying scale factor of 0.0001. I am using ERDAS 9.1 & evni 4.7. Can you ...
1
vote
1answer
158 views

Processing MOD35_L2 HDF Cloud Masks

I am attempting to create a binary cloud mask from the MOD35_L2 data products located at http://ladsweb.nascom.nasa.gov/data/ When opening the MOD35_L2 data in ENVI or the MRTSwath tool it reports 6 ...
2
votes
1answer
60 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 ...
0
votes
0answers
22 views

MODIS MOD13Q1 extract ndvi value [duplicate]

i have downloaded the MODIS MOD13Q1 from USGS GLOVIS in .hdf format. how i will convert it into original ndvi value by multiplying scale factor of 0.0001. I am using ERDAS IMAGINE 9.1 & ENVI 4.7. ...
1
vote
0answers
152 views

Conversion problem of projection of MODIS LAI from sinusoidal to geographic

I am trying to change MODIS data's (LAI) sinusoidal projection to geographic. Actually I did it. But when I reproject it by ERDAS, the output LAI raster moved about 10 km to west side of actual shape ...
0
votes
1answer
83 views

how to multiply and group values of NDVI in Erdas

I have downloaded the MODIS data for calculating the NDVi but the ranges of values in its attribute table ranges from -32768 to 9830 i want to club the similar values upto 2 decimal places and also ...
0
votes
0answers
19 views

How to compile the source code of module MOD14 of NASA

I'm working in a project which uses an Active Fire Detection base on MODIS (MOD14) of NASA. The source code and compiled-file can be downloaded at NASA Now I want to compile the source code, ...
5
votes
2answers
140 views

Download MODIS data for Mexico

I would like to download MODIS npp images for Mexico but I cannot figure out which files correspond to the country. How can I associate each tile to its location without looking at the million of ...
1
vote
0answers
179 views

split multi-band raster to separate rasters in ERDAS IMAGINE

I am currently using ERDAS IMAGINE 2013. I have a 28 Band MODIS image. Is there any way in IMAGINE I could split the 28 bands of the MODIS image into single band images?
0
votes
0answers
54 views

change raster values in a specific region on a single band

I am currently using ERDAS IMAGINE 2013. I have a 28 Band MODIS image. In one of the bands, I need to change the values of a certain region. I tried the following: Load the .img file into IMAGINE. ...
1
vote
2answers
1k views

MRT (MODIS Reprojection Tool) error: 'Input file does not exist'

EDIT: Solved, see my answer. I've downloaded 8 MOD44B granules from Reverb (using the FTP script method), and am trying to use MRT to mosaic them. I'm falling at the first hurdle though - when I add ...
1
vote
1answer
76 views

Lat/lon of pixel inside Landsat scene

How do I find the lat/lon of each pixel inside a landsat scene. Either the equations for converting i,j to lat/lon or just a bunch of files, one for each scene. Background: I have downloaded a bunch ...
2
votes
1answer
872 views

How to make a cloud mask from a daily MOD09 image?

I'm currently working with MODIS data and i've been having some trouble with several aspects of the steps I need to take. For example, I need to make a cloud mask from a daily MOD09GQK image, and i'm ...
0
votes
0answers
158 views

MODIS MOD09A1 processing

modis state flag for MOD09A1 data (Surface Reflectance 8-Day L3 Global 500m) is different for each 8 day composite. I have 10 years data how to extract the cloud information in batch? and is their any ...
3
votes
3answers
550 views

How to efficiently export specific files from .hdf to .img

I am working with MODIS .hdf grid files and am looking for some help on exporting specific files from the .hdf. There are 200+ .hdf's and I need to extract the 0, 1, 2, and 11 (NDVI, EVI, quality, and ...
0
votes
0answers
407 views

GDAL HDF not recognized as supported file

I am having the same issues as in this thread; however, I'm new to programming and need more advice on how to get gdal to open hdf files. I downloaded hdf from MODIS, which I believe are hdf 4. I have ...
0
votes
0answers
119 views

MODIS images set CRS and reproject

I am developing a plugin which reads MODIS images, and I know that MODIS images are in sinusoidal projection and I need to set that CRS and project the image to WGS84 (epsg 4326) in python. I search ...
0
votes
1answer
88 views

change spatial resolution

I have two types of image, one of them is a TRMM image with 0.25 degree cells and the other one is a MODIS image with 1 km spatial resolution. How can I change my TRMM image resolution to 1 km ...
1
vote
0answers
72 views

How to select MODIS pixels with 80% homogeneous landcover from landsat classification?

I have a complex landcover classification for a landsat scene at 30m spatial resolution. Includes about 600 land cover classes. There is a fair amount of clumping per group. I have a MODIS EVI 16 day ...
3
votes
3answers
1k views

MODIS image reprojection/ change coordinate system in ArcGIS 9.3

I have downloaded Utah state shapefile in NAD_1983_UTM_Zone_12N projection and also downloaded the MODIS image of the area (MOD09Q1) in .hdf format which has sinusoidal projection. the .hdf format ...
-2
votes
1answer
135 views

MODIS LST 8 days data to have 16 days LST? [closed]

can i combinate two parameters with different Temporal Granularity , i mean can i combinate image LST MODIS 8 days with image NDVI modis 16 days??
3
votes
3answers
753 views

Convert 800 .hdf4 files to Tiff using GRASS/QGIS/SAGA/GDAL/R

I've have MODIS ndvi data (MODIS_Grid_16 days NDVI) from the iberian peninsula, from February of 2000 to August of 2012 (really big data). How do I batch convert about 800 .hdf MODIS files to .tif ? ...
1
vote
0answers
98 views

carbon sequestration using NDVI [closed]

For my project I need to map areas of major carbon sequestration using NDVI. The plan is that areas that have a high NDVI value (which stays high over seasons and over years) could be identified as ...
1
vote
1answer
1k views

How to process MODIS ndvi data using QGIS/GRASS/R?

I have MODIS ndvi data (MODIS_Grid_16 days NDVI) from the iberian peninsula (3 tiles), from February of 2000 to August of 2012 (really big data). I want to know how to deal with this kind of files. My ...
0
votes
0answers
104 views

MODIS HDF to Corrected Reflectance Bands 7-2-1. Change Reflectance

Convert HDF to Tiff easily. But I can not get the images to 7-2-1 bands. Like this : How can I get this image from HDF and what product should I use (MYD09GQ and etc)? Maybe using a ArcGIS? Thanks ...
0
votes
1answer
77 views

Call MRT Swath from IDL

Do you know how to call MRT Swath from IDL? I would like to work with Modis L1B (MOD02HKM), read it, reproject, some processing and writing the results. Any help highly appreciated.
1
vote
1answer
154 views

Importing MODIS LST data from MRT in ENVI

I am doing a project on heat island effect using MOD11_A2 data. After processing in MRT I have separate bands. While importing them into ENVI, which bands should I select in the RGB option?
1
vote
3answers
82 views

What is meaning of Emissive in ENVI?

When I view MOD02 data in ENVI directly with ... File--Open image file, ENVI automatically loads data. So what is the meaning of Emissive? The description of MOD02 data can be found in MOD 02 - ...
2
votes
2answers
833 views

Automatically download Modis image using python script

I need download Modis imagery automatically from the website: https://earthdata.nasa.gov/. I found this link: http://gis-techniques.blogspot.com/2010/06/getting-modis-image-automatically-from.html ...
2
votes
1answer
541 views

MOD 35 Cloud Mask HDF in ENVI

I am having difficulty getting ERDAS or ENVI to correctly read and display cloud mask attributes from MOD 35 HDF files. They files are displayed as 0-255, whereas I expected some kind of code 0, 1, ...
3
votes
1answer
1k views

How to reproject MODIS Swath data to WGS84

Im new to GIS and now working with MODIS04L2 Aerosol Optical Thickness image. I need to reproject the image to other coordinate system such as WGS84 for later work but now Im stuck with it. I have try ...
0
votes
1answer
476 views

Format MODIS HDF to Geotiff in MRT

Am using Modis Reprojection Tool (ModisTool) on MODIS LST data (MOD11A1) to convert to GeoTiff format. When I run it I get this error message: Error: OpenGeoTIFFFILE: Opening Output Image File ...
4
votes
2answers
416 views

What does MODIS data reflectance values (MOD13Q1) mean?

Several publications suggest filtering MODIS data (in my case MOD13Q1) prior to use. They recommended to filter out pixels having blue reflectance more than 10%, but what 10% here means? is it 10% of ...
0
votes
1answer
268 views

Better way to handle HDF and GeoTIFF files

I am using GDAL and MODIS reprojection tool in my python project and want to know better way for math new indices of HDF data (MODIS data). Also I want to visualize them in web. Which format is more ...
2
votes
1answer
422 views

Modis Reprojection Tool mirror or download alternative?

I need to convert and reproject a complete archive of MODIS *.hdf data. NASA's Modis Reprojection Tool is literally designed for this, and I even have an old script from the last time I performed ...
1
vote
0answers
90 views

Why does GDAL Translate not create any output in batch mode?

Has anyone tried using the Batch Mode function in GDAL translate - qgis2? I can process files individually ok, in my case MODISA HDF files. But the batch mode does not seem to work. Here is my set ...
2
votes
0answers
89 views

Flood extent extraction from satellite images

How i can extract the floodwater from satellite images? Is the image classification method accurate for moderate-resolution satellite (Terra/Aqua MODIS)? Or is there a more accurate methods? Thanks.
2
votes
1answer
142 views

Reproject gif.gz raster to WGS84 in QGIS

I am a steep learning curve into QGIS. I have a raster of global fire maps from the modis site: http://lance-modis.eosdis.nasa.gov/imagery/firemaps/firemap.2013221-2013230.8192x4096.gif.gz I would ...
2
votes
1answer
272 views

How do I select random points within each land-cover class? [closed]

I have a MODIS file and I want to Select random points within each land cover class Extract values of rasters to the sample points. Export attribute table Could you please tell me what steps I ...
1
vote
2answers
137 views

Getting started with 'shell scripting loops' in GRASS

I'd like to work through the MODIS-Aqua example here. But typically the hardest bit is getting off the ground. What specifically does it mean by 'shell scripting'? is it referring to the command ...