Rank: 526 based on 253 downloads (last 30 days) and 14 files submitted
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Ian Howat

E-mail
Company/University
Ohio State University

Personal Profile:

Assistant Professor, School of Earth Sciences
Research Scientist, Byrd Polar Research Center
http://bprc.osu.edu/~ihowat/
http://bprc.osu.edu/GDG/
http://www.geology.ohio-state.edu/

Professional Interests:
Glaciology

 

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Files Posted by Ian View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
09 Feb 2010 Screenshot ENVI file reader, updated 2/9/2010 Read ENVI raster files. Supports all interleaves, data types (except complex) and byte orders. Author: Ian Howat data import, data export, envi, import, io, read 34 7
  • 4.66667
4.7 | 4 ratings
06 Nov 2009 tile Split a 2D array into equally-sized sub-arrays. Author: Ian Howat arrays, image processing, optimization 15 0
25 Aug 2008 SORTFIELDS SORTFIELDS sort values in all fields within a structure. Author: Ian Howat structures, cell arrays, field, sort, structure, utilities 16 3
  • 5.0
5.0 | 3 ratings
25 Aug 2008 GPS to UTC(GMT) time conversion GPS2UTC Convert GPS time tags to UTC(GMT) time accounting for leap seconds Author: Ian Howat clock, fun, gps, utc, gmt, time 52 0
25 Aug 2008 UTC to GPS time coverter Convert UTC(GMT) time tags to GPS time accounting for leap seconds Author: Ian Howat clock, fun, utc, gmt, gps, time 32 1
Comments and Ratings by Ian View all
Updated File Comments Rating
15 Apr 2011 Kriging and Inverse Distance Interpolation using GSTAT InterpolationGstat performs inverse distance or kriging interpolation using gstat. Author: James Ramm

02 Jun 2010 CELL2FLOAT converts cell array into scalar float array (v4.0, jan 2010) Author: Jos (10584)

07 Dec 2009 iff.m Interactive Fourier filter written as a single self-contained Matlab function. Author: Tom O'Haver

whoops - sorry - didnt mean to give you one a rating without giving you the chance to fix this first- here's 5 stars to help even it out.

07 Dec 2009 iff.m Interactive Fourier filter written as a single self-contained Matlab function. Author: Tom O'Haver

??? Index exceeds matrix dimensions.

Error in ==> iff>RedrawFourierFilter at 152
if length(fy)>length(ffilter), ffilter=[ffilter ffilter(1)];end

Error in ==> iff>iffwidth at 103
ry=RedrawFourierFilter(x,y,center,width,shape,mode);

Error in ==> iff>butdownfcn at 478
feval(params.funhand{l},out,params.h2(l)); % evaluate
using feval()

??? Error while evaluating figure WindowButtonDownFcn

25 Sep 2009 freezeColors / unfreezeColors Use multiple colormaps per figure! Version 2, now works for many types of objects, not only images. Author: John Iversen

Great work!

Comments and Ratings on Ian's Files View all
Updated File Comment by Comments Rating
08 Mar 2014 ENVI file reader, updated 2/9/2010 Read ENVI raster files. Supports all interleaves, data types (except complex) and byte orders. Author: Ian Howat olivia

Thanks for the nice code. But it doesn't work in Matlab R2012a. The 'fileparts' function has been modified in matlab as
[pathstr, name, ext] = fileparts(file);

could you please modify the following line in the code:
[pathstr, name, ext, versn] = fileparts(file);

19 Sep 2013 READ_ENVIHDR Read and return ENVI image file header information. Author: Ian Howat Hueni, Andy

Note that calling this file will close ALL(!) open file identifiers via fclose all.
To use this file in an environment where other files should remain open, modify accordingly to close only the header fid:

fclose(fid);

27 Aug 2013 DATEPART Extract decimal yr/month/day/hr/min/sec from a datenum. More versatile than datevec. Author: Ian Howat K, Dan

Very useful function.

17 Jul 2013 UTC to GPS time coverter Convert UTC(GMT) time tags to GPS time accounting for leap seconds Author: Ian Howat Zach

leap second step dates do not correspond with https://en.wikipedia.org/wiki/Leap_second

Thoughts?

23 Jun 2012 FILLNANS FILLNANS replaces all NaNs in array using inverse-distance weighting between non-NaN values. Author: Ian Howat Dugge, Jake

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