Rank: 66 based on 948 downloads (last 30 days) and 22 files submitted
photo

François Beauducel

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

Personal Profile:

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

Professional Interests:
geophysics, volcanology, seismology, modelling, signal processing, ground deformation, mapping, graphics

 

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Files Posted by François View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
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 111 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 92 8
  • 4.85714
4.9 | 7 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 48 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 82 7
  • 5.0
5.0 | 7 ratings
28 May 2014 Screenshot Okada: Surface deformation due to a finite rectangular source Computes Okada's 1985 solution for displacements, tilts and strains due to fault dislocation. Author: François Beauducel deformation, elastic, fault, earthquake, modelling, displacements 65 3
  • 5.0
5.0 | 4 ratings
Comments and Ratings by François 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' Files View all
Updated File Comment by Comments Rating
17 Oct 2014 READHGT: Import/download NASA SRTM data files (.HGT) Imports or download SRTM worldwide digital elevation model data files. Author: François Beauducel pillai, vinod

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 Beauducel, François

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 pillai, vinod

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

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

Thanks, saved me some work :-)

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

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.

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