Rank: 75 based on 971 downloads (last 30 days) and 22 files submitted
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François Beauducel

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Company/University
Institut de Physique du Globe de Paris
Lat/Long
48.844837, 2.356283

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I started using Matlab in 1991 (v3.0).


 

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Files Posted by François Beauducel View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
14 Nov 2014 Round with significant digits Rounds towards the nearest number with N significant digits. Author: François Beauducel round, digit, precision 123 13
  • 4.76923
4.8 | 14 ratings
09 Sep 2014 Screenshot READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel earth science, digital elevation mod..., mapping, geography, cartography 125 14
  • 4.88889
4.9 | 9 ratings
09 Sep 2014 Screenshot DEM: Shaded relief image plot (digital elevation model) Pretty shaded relief map as flat image. Author: François Beauducel earth science, digital elevation mod..., mapping 109 8
  • 4.875
4.9 | 8 ratings
26 Aug 2014 LL2UTM and UTM2LL Latitude/longitude to and from UTM coordinates precise and vectorized conversion. Author: François Beauducel geodesy, coordinates system, mapping, cartography, convert 53 2
  • 4.5
4.5 | 2 ratings
01 Jul 2014 Screenshot Read and write multiplexed miniSEED file Imports and exports data files in seismological format "mini-SEED" Author: François Beauducel geophysics, seismology, data import, seed, miniseed, mseed 76 7
  • 5.0
5.0 | 7 ratings
Comments and Ratings by François Beauducel View all
Updated File Comments Rating
15 Oct 2014 READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel

Dear Vinod,
SRTM .hgt files are freely available at http://dds.cr.usgs.gov/srtm/version2_1
Once downloaded, a single tile (1 by 1 degree) is coded as a simple matrix of 1201 by 1201 binary int16 values, big-endian. No header. Integer values represent elevations in meter. -32768 value means "no data".
For SRTM1 tiles (USA territories), tiles are 3601 by 3601.
That's all. See online documentation for further details but this is easily readable in any language.
Regards,
François.

09 Sep 2014 READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel

Dear John,
Yes, you missed the required version of Matlab (2014a) which contains a new function "strjoin".
I just updated the script to improve compatibility with older versions of Matlab. Please let me know.
François.

29 Aug 2014 Read and write multiplexed miniSEED file Imports and exports data files in seismological format "mini-SEED" Author: François Beauducel

Thanks Dicky,
The time vector is in datenum Matlab format (see datenum for description). You must apply the command:

datetick('x')

after plotting the data to have time labels (see datetick function).

26 Jul 2014 READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel

thanks Daniel.

31 May 2014 Read and write multiplexed miniSEED file Imports and exports data files in seismological format "mini-SEED" Author: François Beauducel

The problem detected by Robert is solved. Number of plotted channels in multiplexed files is now limited to 20 subplots, with a warning message. For larger number of channels, please use the functional form [X,I]=rdmseed(...) to load and plot what you want (see help).

Comments and Ratings on François Beauducel's Files View all
Updated File Comment by Comments Rating
25 Oct 2014 Sun69: Penny-shaped crack in elastic half-space Computes surface deformation due to hydrostatic pressure in a horizontal circular fracture. Author: François Beauducel Hamza

24 Oct 2014 DEM: Shaded relief image plot (digital elevation model) Pretty shaded relief map as flat image. Author: François Beauducel Matteo Niccoli

17 Oct 2014 READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel vinod pillai

Dear Francois,
Thanks for the suggestion,
regards

vinod pillai

15 Oct 2014 READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel François Beauducel

Dear Vinod,
SRTM .hgt files are freely available at http://dds.cr.usgs.gov/srtm/version2_1
Once downloaded, a single tile (1 by 1 degree) is coded as a simple matrix of 1201 by 1201 binary int16 values, big-endian. No header. Integer values represent elevations in meter. -32768 value means "no data".
For SRTM1 tiles (USA territories), tiles are 3601 by 3601.
That's all. See online documentation for further details but this is easily readable in any language.
Regards,
François.

15 Oct 2014 READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel vinod pillai

Dear Francois,

I joined Matworks today only, while searching for some help on extracting height from SRTM file, and happen to catch your link. Though i have not worked on MATLAB, is there any other way ( say in VB.NET) to capture the height from SRTM .hgt.

regards

vkp

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