SRTM v4 is an effort by the folks at CIAT-CSI to scrub, polish, and remove gaps in the raw SRTM data released by NASA (SRTM 3).
One userfriendly interface : http://dwtkns.com/srtm/ provides srtm_xx_yy.zip tiles of ~20Mo each.
The CIAT-CSI project provides 3 zipped tiles (W, NE, SE) of ~1Go each. These files are behind a public password (see page), on box.com, which block programmatic download.
Is there any mirror with these 3 big SRTM 4 files using a stable link ? so I may use a makefile to let coworkers to programmatically download them via curl or alikes.
Answer
If ok to manage 872 tiles which can be later on unzip and gdal_merge, then :
wget -r --no-parent --random-wait --timestamping -A.zip http://gis-lab.info/data/srtm-tif/
or
curl -L 'http://gis-lab.info/data/srtm-tif/srtm_[01-72]_[01-24].zip' -o 'SRTM_V41_#1_#2.zip'
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