Code covered by the BSD License  

Highlights from
Sun Azimuth Data

4.5

4.5 | 2 ratings Rate this file 8 Downloads (last 30 days) File Size: 17.94 KB File ID: #5430

Sun Azimuth Data

by Khalil Sultan

 

08 Jul 2004 (Updated 09 Jul 2004)

A script for generation of an ASCII File (Report) containing Sun Azimuth Data.

| Watch this File

File Information
Description

Using this script, you can generate a set of data regarding Sun Azimuth Positions at various instants of time for any location on Earth. This data can be used in many applications, like, in determination of orientation of any plane's azimuth from True North.

The syntax is 'sun_azimuth_data' (no arguments). It prompts for Observer's geodetic coordinates, observer's time zone and starting time [according to local standard time]. Then, it asks the Time Period and intervals for which Sun Azimuth data has to be generated. It creates a MS Word file containing Sun Azimuth data.

Author offers his acknowledgements for the script 'sun_position.m' by Vincent Roy, which returns the Sun Position data for a given observer location and time.

History
25/05/2004 - Original Creation by Khalil Sultan (khalilsultan@msn.com)
15/06/2004 - Code Modified.
08/07/2004 - Code Re-modified and Uploaded on MATLAB Central - File Exchange.

Sample Interaction with the Script :
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

WARNING:
Skipping any field, with a hyphen before it, will result in termination of execution of this script. Fields with some value, in square brackets after them, represent their default values.
 
- Enter the Location of the Observer: Karachi
  Enter the Country of the Observer: Pakistan
  Enter the GPS Receiver Set Title:
 
- Enter the Longitude (in dd.dddddd° Format) : E 68.35
- Enter the Latitude (in dd.dddddd° Format) : N 19.15
  Enter the Altitude (in meters) [0] :
- Enter the Time Zone (+GMT Zone) : +5
 
- Should the data be generated for today [y/n] : y
- Enter the Starting Time (in HH:MM:SS [24 Hours] format) : 16:00:00
  Enter the Duration of Interval (in minutes) [5] :
  Enter the Total Time Span (in hours) [2 Hours] :

Acknowledgements

The author wishes to acknowledge the following in the creation of this submission:
sun_position.m

MATLAB release MATLAB 6.5 (R13)
Tags for This File  
Everyone's Tags
Tags I've Applied
Add New Tags Please login to tag files.
Comments and Ratings (2)
16 Feb 2006 ALLAH NAWAZ KHAN

Very Nice.... Khalil Sultan..........
it is really accurate to an extent....
nice use matlab by Khalil Sultan.

28 Aug 2009 Hanno Ix

Using the data suggested in the initial comment of this m-file I received results different from the suggested results:

location.longitude = -105.1786;
location.latitude = 39.742476;
location.altitude = 1830.14;
time.year = 2003;
time.month = 10;
time.day = 17;
time.hour = 12;
time.min = 30;
time.sec = 30;
time.UTC = -7;

sun = sun_position(time, location);
%
% sun =
%
% zenith: 50.1080438859849
% azimuth: 194.341174010338

RESULTS SEEN HERE:

>> sun
sun =
     zenith: 50.107627161847546
    azimuth: 1.943412241230940e+002

I am using MATLAB vs. 7.6.0.324 (R2008a). I wonder if there is anyone who has seen a comparable discrepancy and if/how this was resolved.

Regards

Please login to add a comment or rating.
Tag Activity for this File
Tag Applied By Date/Time
script Khalil Sultan 22 Oct 2008 07:26:34
ascii Khalil Sultan 22 Oct 2008 07:26:34
data Khalil Sultan 22 Oct 2008 07:26:34
earth sciences Khalil Sultan 22 Oct 2008 07:26:34
positions Khalil Sultan 22 Oct 2008 07:26:34
sun azimuth Khalil Sultan 22 Oct 2008 07:26:34
gps kuoping 29 Jun 2010 07:18:23

Contact us at files@mathworks.com