All Questions
8
questions
1
vote
0
answers
264
views
Reproject Data on to WRF grid
I have MODIS data EVI and LSWI which I want to fit to WRF grid which in LCC projection system, I can read specification using CEN_LON, LAT1, LAT2. Based on that I have reprojected my TIFF files using ...
1
vote
1
answer
73
views
Do you need to account for the sinusodial projection when working with MODIS?
I am currently working on a project where we analyse the vegetation cover of the whole of Canada and the US. We have used MODIS data. Only now did I read that the usage of MODIS data leads to possible ...
- 925
1
vote
0
answers
205
views
Why does this HDF4 file converted to .tif with gdal come out at a coarser resolution?
I'm currently working with large-domain MODIS data. These come in multiple separate HDF4 files which I stitch together into a virtual data set (VRT), reproject into EPSG:4326, sub-set to the domain of ...
3
votes
1
answer
721
views
Analyzing MODIS Aerosol Optical Depth
I want to extract AOD from the following hd5 file. My objective is to have a tif file projected in EPSG:4326 with values of all 3 bands.
https://e4ftl01.cr.usgs.gov/MOTA/MCD19A2.006/2018.11.08/...
- 285
1
vote
1
answer
1k
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....
- 938
1
vote
0
answers
190
views
Retaining resolution of MODIS data while reprojecting using gdalwarp
Can anyone help me to use gdal(gdalwarp specifically) for reprojection? I am using it to reproject MODIS data :
I originally have an hdf file - MCD43A4.A2005001.h08v05.005.2007351192333.hdf which has ...
- 61
4
votes
2
answers
4k
views
Why is 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 ...
- 2,443
3
votes
1
answer
718
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 ...
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