Rank: 106 based on 1672 downloads (last 30 days) and 14 files submitted
photo

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

 

Watch this Author's files

 

Files Posted by Ian View all
  • 1 - 5 of
  • 14
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
06 Nov 2009 Screenshot ENVI file reader, version 2 Read ENVI raster files. Supports all interleaves, data types (except complex) and byte orders. Author: Ian Howat envi, import, data import, data export, io, read 175 4
  • 4.5
4.5 | 2 ratings
06 Nov 2009 tile Split a 2D array into equally-sized sub-arrays. Author: Ian Howat optimization, arrays, image processing 35 0
25 Aug 2008 SORTFIELDS SORTFIELDS sort values in all fields within a structure. Author: Ian Howat structures, field, cell arrays, sort, utilities, structure 135 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 gps, conversion, fun, clock, utc, time 210 0
25 Aug 2008 UTC to GPS time coverter Convert UTC(GMT) time tags to GPS time accounting for leap seconds Author: Ian Howat gmt, clock, conversion, fun, utc, time 160 0
Comments and Ratings by Ian
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  • 1
Updated File Comments Rating
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
  • 1 - 5 of
  • 21
Updated File Comment by Comments Rating
26 Oct 2009 ENVI file reader, version 2 Read ENVI raster files. Supports all interleaves, data types (except complex) and byte orders. Author: Ian Howat Esquerre, Carlos

It works pretty good. I made a small modification to read files without geographical information since I work with hyperspectral image of mushrooms.
26 Sep 2009 SORTFIELDS SORTFIELDS sort values in all fields within a structure. Author: Ian Howat Fetterman, Matt

Seems quite useful !
24 Nov 2008 SORTFIELDS SORTFIELDS sort values in all fields within a structure. Author: Ian Howat Shlomi

It'll be also useful if you return the parameter 'I' in the same manner that the sort function does. 'I' should be an array or cell array in the case that 'SORTBYFIELDS' was not used.
24 Nov 2008 SORTFIELDS SORTFIELDS sort values in all fields within a structure. Author: Ian Howat Shlomi

This function is just what I looked for. Thanks.
I suggest you add another option to sort the fields according to a supplied variable and not only according to one of the fields.
It is a complimentary option to 'SORTBYFIELD' and can be called 'SORTBYVAR'.
13 Aug 2008 DATEPART Extract decimal yr/month/day/hr/min/sec from a datenum. More versatile than datevec. Author: Ian Howat Howat, Ian

Cory,
Please give some more details of your error *BEFORE* trashing the function with a 1-star rating so that I can fix it. You say a that the function is failing in returning the correct month with a 1-day time series. If I create such as time series with:
>t = datenum('jan-0-2008')+(1:365);
and then sample this time series about once a month:
>> ts = t(1:30:end);
>> datestr(ts)
ans =
01-Jan-2008
31-Jan-2008
01-Mar-2008
31-Mar-2008
30-Apr-2008
30-May-2008
29-Jun-2008
29-Jul-2008
28-Aug-2008
27-Sep-2008
27-Oct-2008
26-Nov-2008
26-Dec-2008

and then get the decimal month using datepart:
>> datepart(ts,'month')
ans =
  Columns 1 through 9
    1.0000 1.9677 3.0000 3.9677 4.9667 5.9355 6.9333 7.9032 8.8710
  Columns 10 through 13
    9.8667 10.8387 11.8333 12.8065
Looks good to me ... sure you're using it correctly??????

Top Tags Applied by Ian
  • 1 - 5 of
  • 60
clock, fun, gps, import, time
Files Tagged by Ian View all
  • 1 - 5 of
  • 15
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
06 Nov 2009 Screenshot ENVI file reader, version 2 Read ENVI raster files. Supports all interleaves, data types (except complex) and byte orders. Author: Ian Howat envi, import, data import, data export, io, read 175 4
  • 4.5
4.5 | 2 ratings
06 Nov 2009 tile Split a 2D array into equally-sized sub-arrays. Author: Ian Howat optimization, arrays, image processing 35 0
25 Aug 2008 SORTFIELDS SORTFIELDS sort values in all fields within a structure. Author: Ian Howat structures, field, cell arrays, sort, utilities, structure 135 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 gps, conversion, fun, clock, utc, time 210 0
25 Aug 2008 UTC to GPS time coverter Convert UTC(GMT) time tags to GPS time accounting for leap seconds Author: Ian Howat gmt, clock, conversion, fun, utc, time 160 0
 

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