Questions tagged [modis]

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

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1answer
436 views

How to mosaic multiple modis tiles of several dates using mrt tool?

How to mosaic multiple tiles of Modis MOD13Q1 in loop. I have about 395 files of each tile from a total of four tiles. I am using linux operating system and therefore use shell script. I need to ...
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0answers
252 views

Binary cloud Mask from MODIS (MOD35_L2) using MRTSWATH

When the MRTSwath tool is fed with MOD35_L2 cloud mask HDF file, the tool provides six tif images (b0 till b5). Each tif file has 8 bit information. Are these 6 images somehow indicating the 48 bits (...
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1answer
500 views

Reprojecting from MODIS Sinusoidal to Web Mercator: how to calculate output raster dimensions?

I have a MODIS image from AWS in sinusoidal projection and I want to calculate output raster size after reprojecting it into Web Mercator (EPSG:3857). $ gdalinfo MCD43A4.A2017185.h11v03.006....
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1answer
162 views

MODIS L1B reprojection and mosaic problem

I have been using MODIS L1B file to retrieve water vapor content. However, my study area is exactly between the gap between two images,just like this: I have tries ENVI MCTK extensions, HEG TOOLS, ...
1
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1answer
315 views

How to convert NoData values to other values for raster data?

I have a NDVI map from MODIS data for my AOI. When classified, i noticed that few of the pixels appear in " white" color and show no value. How do i classify these pixels and attache an appropriate / ...
3
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1answer
203 views

Alignment problem in 2 vector shapefiles with the same projection

I have 2 vector shapefiles of Manila that are supposed to align, but they do not (screenshot attached). I have projected them to the same projection (World Mercator WGS 84, EPSG 3395). One shapefile ...
1
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1answer
1k views

Google engine MODIS and filter by polygon

I tried to apply "filterBound" function to a MODIS image collection, using a polygon, but it doesn´t work. This is my script : var monte = ee.FeatureCollection("ft:1Sm4ObZgrKeCP-VlFa6Jf019-...
1
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0answers
143 views

Issue with mapping MODIS SIN grid to EASE 2.0 with gdalwarp

I am trying to merge and reproject MODIS 250m NDVI product (https://lpdaac.usgs.gov/dataset_discovery/modis/modis_products_table/myd13a3_v006) to EASE2.0 grid. I am interested in projecting these to ...
1
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1answer
350 views

Automating MODIS image download and its processing in ArcGIS Desktop? [closed]

For MODIS satellite images how to automate the download, unzip, import and process to point and then to Excel for each climate satellite MODIS layer. There are 3650 days of imagery to process with 8 ...
-1
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2answers
800 views

Aggregation of MODIS 16 days data to annual data set

Is there a way to calculate mean annual NDVI and mean annual EVI from the time series MODIS images (2000 - 2016). I have gridded data downloaded to the local drive. Planning to use R for this work.
1
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1answer
283 views

Timesat image output to ArcGIS

I processed MODIS MOD13Q1 NDVI times series (from 2000 to 2015) in Timesat. I specifically extracted start of season data and for each year (growth season) I was able to produce an image showing the ...
1
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1answer
321 views

Acquiring MODIS data?

I am trying to figure out how to use INLA without any formal instruction and I have visited the INLA website (www.r-inla.org) to view some examples. I have also been reading through the book Spatial ...
2
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0answers
628 views

Download HDF NDVI in R

I have a function to automate downloading NDVI data from https://e4ftl01.cr.usgs.gov/MOLT/ However, I'm hitting an error when downloading the .HDF files. They download fine but they seem to be ...
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0answers
46 views

How to use bitwise operator in ArcGIS desktop to extract required pixels?

MODIS QA dataset gives quality flags in decimal numbers that are required to be converted into binary format to assess data quality. For a 8-bit system of MOD15A5 image, the decimal values 16 and 97 ...
4
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1answer
421 views

Open Georreferenced MODIS L2 atmospheric data in python

i'm working with a MOD04 (atmospheric product) but i don't know how to georrefence the image in Python. I'll show an example of a code opening the Optical Thickness product #==========================...
2
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1answer
500 views

Error in GDAL for MODIS library in R

An answer was provided to this question previously, however it did not solve the question. I am analyzing MODIS data, and would like to download and process the data. Here's what I have done so far: ...
3
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1answer
695 views

Converting HDF file (MODIS product) in ArcGIS as correctly georeferenced raster by ENVI?

Which algorithm I should use in ENVI 5.2 to open the MODIS product (MOD13Q1 or MODIS/Terra Vegetation Indices 16-Day L3 Global 250m Grid SIN V006), given as HDF file to ArcGIS 10.5 as correctly ...
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2answers
403 views

R MODISTools downloading from web service currently not working?

I'm trying to download MODIS FPAR data (and other products) using the R package MODISTools. It has always worked for me but since about two weeks (beginning of March 2017), I'm always getting the ...
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2answers
402 views

Error with MODIS download in R

I hope somebody knows this error message, since I managed before the downloading with the same script (last year): source("ModisDownload.R") mrtpath <- '/home/usuario/MRT/MRT/bin/' modisProducts()...
2
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1answer
181 views

Modis V6 SRID Information

I am working with the Modis version6 NDVI/EVI 16 day composite dataset (MOD13Q1). I am developing a automated algorithm to download, aggregate, and processes the dataset. Therefore, I do not want to ...
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0answers
65 views

Unable to produce tif files from two stitched modis tiles, i could not extract my bands of interest which are EVI and pixel reliability

Hi i am trying to stitch two modis tiles and also extract my bands of interest which are EVI and pixel reliability. the steps i took are as follows. loaded the files into ModisTool selected my bands ...
2
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1answer
158 views

Which output data type to choose in QGIS SAGA Raster Calculator in Batch Mode?

I have 5 years of MODIS13Q1 NDVI .tiff images for time series analysis. I want to multiply all the images with the scale factor of 0.0001 before using them. In order to process all at once I try to ...
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1answer
331 views

Using scale and offset values of MODIS products

I'm working on NDVI data from MODIS_13Q1 product. As far as I know, NDVI data has scale and offset values. I used these values to get geophysical values of pixels. My problem is after processing ...
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0answers
142 views

Weighted average to make monthly LST in R?

How to make a monthly LST (MODIS) product from the LST day and LST night, knowing that it is a product of 8 days and some months are represented by four or more pictures in addition to the lack of LST ...
1
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1answer
113 views

Getting / displaying all data bands in ArcMap using *.hdf data?

I was using modis snow cover product with ArcMap 10.1 which had 2 data bands (0,1) and suddenly it stopped showing one of the bands which i needed (1, the snow cover). How to get that data band back ...
2
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2answers
251 views

How to match MODIS reflectance files (e.g.,MOD09GQ) with correct cloud mask (e.g., MOD35_L2)

I hope to be working with MODIS data, mostly the V6 250m reflectance files (e.g., MOD09GQ). The naming convention of these files makes it easy to identify which .hdf covers my area of interest (i.e., ...
3
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2answers
918 views

Projecting a MODIS SST netcdf file in R

I've downloaded monthly SST data (11u, nighttime) for July 2014. https://oceancolor.gsfc.nasa.gov/cgi/l3?per=MO&prd=NSST_sst.nc&sen=A&res=4km&num=24&ctg=Standard&date=...
1
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1answer
815 views

multiply range of value NDVI of Modis product in Google Earth Engine

Modis product have range of value NDVI from -2000 to 10000, but I need this range of value modify on range from -0,2 to 1 This is my code for finding NDVI in region: var California = ee.Feature( //...
3
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1answer
2k views

time series NDVI - Modis products - GEE

how can I select only good data (Quality informations) from Modis product in Google Earth Engine. I tried use this code: var collection = ee.ImageCollection ('MODIS/MYD13Q1').select(['NDVI'],['...
1
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1answer
437 views

PyMODIS: Setup and Running

I have installed pyMODIS along with Numpy and the necassary GDAL bindings. How do I go about running the scripts such as modis_convert.py and modis_download_from_list.py. Are these ran from the ...
3
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1answer
639 views

Modis Reprojection Tool “Input header file, Error in module”

I am trying to run Modis Reprojection tool for conversion from HFD to Geotiff for Modis terra Level 2 data 3KM swath i.e "MOD04_3K". Every time I try to input a file I get the following error: Error ...
1
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1answer
311 views

Modis Reprojection tool, BAD or missing Total_BANDS values

I am trying to convert Modis terra Level 2 data 3KM swath i.e "MOD04_3K" from HDF to GeoTiff. I am using Modis Swath tool. When I input my file it gives an error saying "BAD or missing Total_BANDS ...
6
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2answers
1k views

How do MODIS products naming conventions work?

If I have the product MOD13Q1.A2014001, does it represent the previous 16 or the 16 days after January 1st? I.e., the product is made with 16 days, but how to determine if it was taken the previous ...
3
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2answers
884 views

“Warning, inconsistent extent!” error after using project raster for MODIS data

I'm using MODIS satellite data that I've converted into GeoTIFFs (using extract subdataset). ArcMap automatically sets the geographic coordinate system to ...
2
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0answers
496 views

Get Modis tile from lat long

I'm trying to get the MODIS tile that I need, I can get it using online calculator http://landweb.nascom.nasa.gov/cgi-bin/developer/tilemap.cgi but I need to get it in code. How I can convert lat, ...
1
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1answer
162 views

How to extract EVI from MOD13Q1 with MRTBatch?

I want to extract EVI from Modis MOD13Q1 from some scene of images. I use ModisTool and MRTBatch. I have selected ONLY 250m_16_days_EVI as selected bands. All is correct until I save the parameter ...
0
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1answer
427 views

Applying MODIS Pixel Reliability and Vegetation Index (VI) Quality mask for MOD13Q1 using ArcGIS Desktop?

I have some sets of MODIS MOD13Q1 data sets during March and December for year 2000 to 2015. I need to extract the NDVI and EVI for those two months from the entire 15 years. How do I apply the ...
1
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1answer
155 views

Geolocation of MODIS swath products

When dealing with MODIS swath products (or any swath products from VIIRS, SeaWifs, etc) such as those available here, is there any way of a-priory knowing the location a given file covers? Typical ...
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0answers
460 views

Projecting MODIS LST (MOD11_L2) Data using GDAL (+ Python)

I am trying to analyse some MODIS LST data (MOD11_L2) and am having some difficulty projecting the files into WGS84. I know that I can use the MODIS Reprojection Swath Tools, but I am trying to do the ...
4
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1answer
1k views

R package gapfill: How to convert R raster stack to 4-dimensional array and then back to raster stack?

I'm currently analyzing MODIS EVI time series (MOD13Q1) for a small region between 2000 and 2015. Now, I would like to fill missing values using the new R package gapfill. What I have done so far: ...
2
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3answers
964 views

Open HDF4 Files using GDAL on Windows

I've got what seems to be a common problem regarding HDF files, but after spending a couple days going around in circles with R, GDAL, etc., I'm turning here for (hopefully) some insight. My goal is ...
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0answers
110 views

view zenith angle of MODIS surface reflectance product and Landsat 8

I have a MODIS daily surface reflectance product (MYD09GA) which I'd like to validate Landsat 8 image with. I want to obtain pixels that only fall within the view zenith angle of Landsat 8 ( 0 - 7.5). ...
2
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2answers
861 views

How does QGIS process a HDF file?

I downloaded a HDF file from here (MOD13Q1). Upon viewing the content I found that the file has 4800X4800 rows/columns(Resolution 250 meters). Now I tried to view the same file in QGIS. Upon zooming ...
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0answers
50 views

How can I create a polygon(filled polygon) from a single pixel stored in a hdf file(MODIS)?

I'm working with MODIS data to get EVI. I'm following this question to get the required values of EVI. The hdf file has 4800x4800 rows/columns (250m). I can get the X,Y pixel coordinates and the ...
1
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1answer
389 views

as I install pymodis?

unfortunately I have tried to download images bulk MODIS (NDIV and LST), but since the USGS server ((http://e4ftl01.cr.usgs.gov/) exchange ftp http, based codes R and python obsolete because I know ...
1
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2answers
160 views

NDVI values obtained with different sensors

In a research paper with NDVI values, differences were found for the same pixel between Landsat 5, Landsat 8, MODIS or Sentinel made after the corresponding atmospheric corrections. Can this be right? ...
1
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1answer
169 views

Get Values of Pixels Inside Polygon (MODIS)

I am working on a problem where I have polygons for features and I want look at daily data from MODIS on, and I am looking for suggestions on how to determine which pixels it is that I need to look at....
3
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4answers
655 views

ModisDownload error downloading only portion of hdf files

I am having problems with ModisDownload recently that I have not had when using it so far. I dowloaded, reprojected and mosaiced modis images about two months ago successfully, despite some errors ...
1
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1answer
368 views

MODIS Reprojection Tool - setting projection parameters to UTM Zone South

The MODIS Reprojection Tool (MRT) allows users to input a UTM zone in the projection parameters, yet it defaults to North (e.g., UTM Zone 20N). Is it possible to edit the projection parameters so that ...
2
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0answers
55 views

Finding pre-processed MODIS products?

I am trying to recognize burnt areas based on some MODIS products and I just realized that I am missing a bunch pixels from the coastline masking. As you can understand that is an issue because I am ...